Pavlović, Vladimir B.

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Authority KeyName Variants
orcid::0000-0002-1138-0331
  • Pavlović, Vladimir B. (262)
  • Pavlović, Vladimir (1)
Projects
Directed synthesis, structure and properties of multifunctional materials United States National Aeronautics and Space Administration (NASA), Grant NNX09AV07A
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200175 (Institute of Technical Sciences of SASA, Belgrade) United States National Science Foundation (NSF) / Centers of Research Excellence in Science and Technology (CREST), Grant HRD-0833184
Investigation of the relation in triad: Synthesis structure-properties for functional materials United States National Science Foundation (NSF) / Partnerships for Research and Education in Materials (PREM), Grant 1523617
Development and application of multifunctional materials using domestic raw materials in upgraded processing lines Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine
Zero- to Three-Dimensional Nanostructures for Application in Electronics and Renewable Energy Sources: Synthesis, Characterization and Processing Lithium-ion batteries and fuel cells - research and development
Synthesis, processing and applications of nanostructured multifunctional materials with defined properties Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200116 (University of Belgrade, Faculty of Agriculture)
Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča)
Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them Functional, Functionalized and Advanced Nanomaterials
Ministry of Education, Youth and Sports (MEYS) of Czech Republic - CEITEC 2020 [LQ1601] Serbian Academy of Sciences and Arts, Project F-198
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200135 (University of Belgrade, Faculty of Technology and Metallurgy)
Bilateral cooperation between Serbia and France, No. 4510339/2016/09/03 “Inteligent econanomaterials and nanocomposites” Grant Agency of the Czech Republic, Project 15-06390S
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200168 (University of Belgrade, Faculty of Chemistry) Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion
National Science Foundation, North Carolina State University, Project No. HRD-1345219 Czech Science Foundation (GACR) - 17-05620S
Investigation of intermetallics and semiconductors and possible application in renewable energy sources Investigation of the effect of parameters of synthesis and processing on dielectric, optical and magnetic properties, both bulk and surface of crystal and polymeric systems
Geologic and ecotoxicologic research in identification of geopathogen zones of toxic elements in drinking water reservoirs- research into methods and procedures for reduction of biochemical anomalies Algorithms and software for frequency-domain and time-domain simulations of RF subsystems and electromagnetic sensors in ICT

Author's Bibliography

Removal of the As(V) and Cr(VI) from the Water Using Magnetite/3D-Printed Wollastonite Hybrid Adsorbent

Popović, Mina; Veličković, Zlate S.; Bogdanov, Jovica; Marinković, Aleksandar D.; Luna, Mariano Casas; Trajković, Isaak; Obradović, Nina; Pavlović, Vladimir B.

(International Institute for the Science of Sintering (IISS), 2022)

TY  - JOUR
AU  - Popović, Mina
AU  - Veličković, Zlate S.
AU  - Bogdanov, Jovica
AU  - Marinković, Aleksandar D.
AU  - Luna, Mariano Casas
AU  - Trajković, Isaak
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/12955
AB  - In this study, the structure, morphology and composition of the synthesized magnetite/3D-printed wollastonite (3D_W/M) composite were characterized, and its adsorption performance with respect to As(V) and Cr(VI) were studied. Magnetite (MG) modified 3D printed wollastonite was obtained by two step procedure: modification of 3D_W with 3-aminoproylsilane (APTES) followed by controlled magnetite (MG) deposition to obtain 3D_W/M adsorbent. The structure/properties of 3D_W/M were confirmed by applying FTIR, XRD, TGD/DTA, and SEM analysis. The adsorption properties of hybrid adsorbents were carried out for As(V) and Cr(VI) removal-one relative to the initial pH value, the adsorbent mass, the temperature, and the adsorption time. Time-dependent adsorption study was best described by pseudo-second order equation, while Weber Morris analysis showed that intraparticle diffusion controled diffusional transport. Similar activation energy, 17.44 and 14.49 kJ•mol-1 for adsorption As(V) and Cr(VI) on 3D_W/M, respectively, indicated main contribution of physical adsorption. Determination of adsorption parameters was performed by applying different adsorption isotherm models, and the best fit was obtained using Freundlich model. The adsorption capacity of 24.16 and 29.6 mg g-1 for As(V) and Cr(VI) at 2o C, Co = 5.5 and 5.3 mg L-1, respectively, were obtained. Thermodynamic study indicated favourable process at a higher temperature. Preliminary fixed-bed column study and results fitting with Bohart-Adams, Yoon-Nelson, Thomas, and Modified dose-response model showed good agreement with results from the batch study.
PB  - International Institute for the Science of Sintering (IISS)
T2  - Science of Sintering
T1  - Removal of the As(V) and Cr(VI) from the Water Using Magnetite/3D-Printed Wollastonite Hybrid Adsorbent
SP  - 105
EP  - 124
VL  - 54
IS  - 1
DO  - 10.2298/SOS2201105P
UR  - https://hdl.handle.net/21.15107/rcub_dais_12955
ER  - 
@article{
author = "Popović, Mina and Veličković, Zlate S. and Bogdanov, Jovica and Marinković, Aleksandar D. and Luna, Mariano Casas and Trajković, Isaak and Obradović, Nina and Pavlović, Vladimir B.",
year = "2022",
abstract = "In this study, the structure, morphology and composition of the synthesized magnetite/3D-printed wollastonite (3D_W/M) composite were characterized, and its adsorption performance with respect to As(V) and Cr(VI) were studied. Magnetite (MG) modified 3D printed wollastonite was obtained by two step procedure: modification of 3D_W with 3-aminoproylsilane (APTES) followed by controlled magnetite (MG) deposition to obtain 3D_W/M adsorbent. The structure/properties of 3D_W/M were confirmed by applying FTIR, XRD, TGD/DTA, and SEM analysis. The adsorption properties of hybrid adsorbents were carried out for As(V) and Cr(VI) removal-one relative to the initial pH value, the adsorbent mass, the temperature, and the adsorption time. Time-dependent adsorption study was best described by pseudo-second order equation, while Weber Morris analysis showed that intraparticle diffusion controled diffusional transport. Similar activation energy, 17.44 and 14.49 kJ•mol-1 for adsorption As(V) and Cr(VI) on 3D_W/M, respectively, indicated main contribution of physical adsorption. Determination of adsorption parameters was performed by applying different adsorption isotherm models, and the best fit was obtained using Freundlich model. The adsorption capacity of 24.16 and 29.6 mg g-1 for As(V) and Cr(VI) at 2o C, Co = 5.5 and 5.3 mg L-1, respectively, were obtained. Thermodynamic study indicated favourable process at a higher temperature. Preliminary fixed-bed column study and results fitting with Bohart-Adams, Yoon-Nelson, Thomas, and Modified dose-response model showed good agreement with results from the batch study.",
publisher = "International Institute for the Science of Sintering (IISS)",
journal = "Science of Sintering",
title = "Removal of the As(V) and Cr(VI) from the Water Using Magnetite/3D-Printed Wollastonite Hybrid Adsorbent",
pages = "105-124",
volume = "54",
number = "1",
doi = "10.2298/SOS2201105P",
url = "https://hdl.handle.net/21.15107/rcub_dais_12955"
}
Popović, M., Veličković, Z. S., Bogdanov, J., Marinković, A. D., Luna, M. C., Trajković, I., Obradović, N.,& Pavlović, V. B.. (2022). Removal of the As(V) and Cr(VI) from the Water Using Magnetite/3D-Printed Wollastonite Hybrid Adsorbent. in Science of Sintering
International Institute for the Science of Sintering (IISS)., 54(1), 105-124.
https://doi.org/10.2298/SOS2201105P
https://hdl.handle.net/21.15107/rcub_dais_12955
Popović M, Veličković ZS, Bogdanov J, Marinković AD, Luna MC, Trajković I, Obradović N, Pavlović VB. Removal of the As(V) and Cr(VI) from the Water Using Magnetite/3D-Printed Wollastonite Hybrid Adsorbent. in Science of Sintering. 2022;54(1):105-124.
doi:10.2298/SOS2201105P
https://hdl.handle.net/21.15107/rcub_dais_12955 .
Popović, Mina, Veličković, Zlate S., Bogdanov, Jovica, Marinković, Aleksandar D., Luna, Mariano Casas, Trajković, Isaak, Obradović, Nina, Pavlović, Vladimir B., "Removal of the As(V) and Cr(VI) from the Water Using Magnetite/3D-Printed Wollastonite Hybrid Adsorbent" in Science of Sintering, 54, no. 1 (2022):105-124,
https://doi.org/10.2298/SOS2201105P .,
https://hdl.handle.net/21.15107/rcub_dais_12955 .

TiO2 nanotubes film/FTO glass interface: Thermal treatment effects

Vujančević, Jelena; Bjelajac, Anđelika; Veltruska, Katerina; Matolin, Vladimir; Siketić, Zdravko; Provatas, Georgios; Jakšić, Milko; Stan, George; Socol, Gabriel; Mihailescu, Ion; Pavlović, Vladimir B.; Janaćkovic, Đorđe

(ETRAN, 2022)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketić, Zdravko
AU  - Provatas, Georgios
AU  - Jakšić, Milko
AU  - Stan, George
AU  - Socol, Gabriel
AU  - Mihailescu, Ion
AU  - Pavlović, Vladimir B.
AU  - Janaćkovic, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13160
AB  - Pure Ti films deposited by radio-frequency magnetron sputtering on FTO glass were anodized to fabricate TiO2 nanotubes (NTs) arrays. The TiO2 NTs/FTO samples were sintered at 450, 550 and 630°C, in ambient air. The thermal treatment did not influence the crystal phase composition, preserving in all cases the anatase single phase. As expected, the crystalline anatase quality improved with the annealing temperature. Nevertheless, slight differences in nanotubular morphology, such as the appearance of grains inside the walls, were observed in the case of the sample sintered at 630°C. Chemical analysis by X-ray Photoelectron Spectroscopy of annealed samples revealed the presence of Sn inside TiO2 NTs, due to diffusion of Sn from the substrate to TiO2. For the substrate was used FTO glass whose top layer consists of SnO2 doped with F. Rutherford Backscattering Spectrometry and Time-of-Flight Elastic Recoil Detection Analysis were carried out to study the elemental depth profile of the films. It was found that the temperature of sintering controls the Sn diffusion inside TiO2 film. Sn atoms diffuse towards the TiO2 NTs surface for the samples annealed at 450 and 550°C. The diffusion is however hindered in the case of the heat treatment at 630°C. Besides, the Ti diffusion into the SnO2 underlayer was observed, together with the formation of TiO2/SnO2 interfaces. One then expected but not a great difference in absorption between samples, since all contained anatase phase, as confirmed by Diffuse Reflectance Spectroscopy. A higher amount of Sn was however detected for the sample annealed at 550°C, which accounts for a slight red absorption shift. The importance of controlling the annealing parameters of the anodized TiO2/FTO structures was highlighted through the formation of TiO2-SnO2 interfaces and the Sn insertion from FTO, which can play an essential role in increasing the photoperformances of TiO2 NTs/FTO based structures of photovoltaic cells.
PB  - ETRAN
T2  - Science of Sintering
T1  - TiO2 nanotubes film/FTO glass interface: Thermal treatment effects
SP  - 235
EP  - 248
VL  - 54
IS  - 2
DO  - 10.2298/SOS2202235V
UR  - https://hdl.handle.net/21.15107/rcub_dais_13160
ER  - 
@article{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Veltruska, Katerina and Matolin, Vladimir and Siketić, Zdravko and Provatas, Georgios and Jakšić, Milko and Stan, George and Socol, Gabriel and Mihailescu, Ion and Pavlović, Vladimir B. and Janaćkovic, Đorđe",
year = "2022",
abstract = "Pure Ti films deposited by radio-frequency magnetron sputtering on FTO glass were anodized to fabricate TiO2 nanotubes (NTs) arrays. The TiO2 NTs/FTO samples were sintered at 450, 550 and 630°C, in ambient air. The thermal treatment did not influence the crystal phase composition, preserving in all cases the anatase single phase. As expected, the crystalline anatase quality improved with the annealing temperature. Nevertheless, slight differences in nanotubular morphology, such as the appearance of grains inside the walls, were observed in the case of the sample sintered at 630°C. Chemical analysis by X-ray Photoelectron Spectroscopy of annealed samples revealed the presence of Sn inside TiO2 NTs, due to diffusion of Sn from the substrate to TiO2. For the substrate was used FTO glass whose top layer consists of SnO2 doped with F. Rutherford Backscattering Spectrometry and Time-of-Flight Elastic Recoil Detection Analysis were carried out to study the elemental depth profile of the films. It was found that the temperature of sintering controls the Sn diffusion inside TiO2 film. Sn atoms diffuse towards the TiO2 NTs surface for the samples annealed at 450 and 550°C. The diffusion is however hindered in the case of the heat treatment at 630°C. Besides, the Ti diffusion into the SnO2 underlayer was observed, together with the formation of TiO2/SnO2 interfaces. One then expected but not a great difference in absorption between samples, since all contained anatase phase, as confirmed by Diffuse Reflectance Spectroscopy. A higher amount of Sn was however detected for the sample annealed at 550°C, which accounts for a slight red absorption shift. The importance of controlling the annealing parameters of the anodized TiO2/FTO structures was highlighted through the formation of TiO2-SnO2 interfaces and the Sn insertion from FTO, which can play an essential role in increasing the photoperformances of TiO2 NTs/FTO based structures of photovoltaic cells.",
publisher = "ETRAN",
journal = "Science of Sintering",
title = "TiO2 nanotubes film/FTO glass interface: Thermal treatment effects",
pages = "235-248",
volume = "54",
number = "2",
doi = "10.2298/SOS2202235V",
url = "https://hdl.handle.net/21.15107/rcub_dais_13160"
}
Vujančević, J., Bjelajac, A., Veltruska, K., Matolin, V., Siketić, Z., Provatas, G., Jakšić, M., Stan, G., Socol, G., Mihailescu, I., Pavlović, V. B.,& Janaćkovic, Đ.. (2022). TiO2 nanotubes film/FTO glass interface: Thermal treatment effects. in Science of Sintering
ETRAN., 54(2), 235-248.
https://doi.org/10.2298/SOS2202235V
https://hdl.handle.net/21.15107/rcub_dais_13160
Vujančević J, Bjelajac A, Veltruska K, Matolin V, Siketić Z, Provatas G, Jakšić M, Stan G, Socol G, Mihailescu I, Pavlović VB, Janaćkovic Đ. TiO2 nanotubes film/FTO glass interface: Thermal treatment effects. in Science of Sintering. 2022;54(2):235-248.
doi:10.2298/SOS2202235V
https://hdl.handle.net/21.15107/rcub_dais_13160 .
Vujančević, Jelena, Bjelajac, Anđelika, Veltruska, Katerina, Matolin, Vladimir, Siketić, Zdravko, Provatas, Georgios, Jakšić, Milko, Stan, George, Socol, Gabriel, Mihailescu, Ion, Pavlović, Vladimir B., Janaćkovic, Đorđe, "TiO2 nanotubes film/FTO glass interface: Thermal treatment effects" in Science of Sintering, 54, no. 2 (2022):235-248,
https://doi.org/10.2298/SOS2202235V .,
https://hdl.handle.net/21.15107/rcub_dais_13160 .

Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials

Janićijević, Aleksandra; Pavlović, Vera P.; Kovačević, Danijela; Perić, Marko; Vlahović, Branislav; Pavlović, Vladimir B.; Filipović, Suzana

(2022)

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Pavlović, Vera P.
AU  - Kovačević, Danijela
AU  - Perić, Marko
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Filipović, Suzana
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13152
AB  - The rise of innovation in the electrical industry is driven by the controlled design of new materials. The hybrid materials based on magnetite/nanocellulose are highly interesting due to their various applications in medicine, ecology, catalysis and electronics. In this study, the structure and morphology of nanocellulose/magnetite hybrid nanomaterials were investigated. The effect of nanocellulose loading on the crystal structure of synthesized composites was investigated by XRD and FTIR methods. The presented study reveals that the interaction between the cellulose and magnetic nanoparticles depends on the nanocellulose content. Further, a transition from cellulose II to cellulose I allomorph is observed. SEM and EDS are employed to determine the variation in morphology with changes in component concentrations. By the calculation of magnetic interactions between adjacent Fe3+ and Fe2+ ions within composites, it is determined that ferromagnetic coupling predominates.
T2  - Polymers
T1  - Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials
SP  - 1819
VL  - 14
IS  - 9
DO  - 10.3390/polym14091819
UR  - https://hdl.handle.net/21.15107/rcub_dais_13152
ER  - 
@article{
author = "Janićijević, Aleksandra and Pavlović, Vera P. and Kovačević, Danijela and Perić, Marko and Vlahović, Branislav and Pavlović, Vladimir B. and Filipović, Suzana",
year = "2022",
abstract = "The rise of innovation in the electrical industry is driven by the controlled design of new materials. The hybrid materials based on magnetite/nanocellulose are highly interesting due to their various applications in medicine, ecology, catalysis and electronics. In this study, the structure and morphology of nanocellulose/magnetite hybrid nanomaterials were investigated. The effect of nanocellulose loading on the crystal structure of synthesized composites was investigated by XRD and FTIR methods. The presented study reveals that the interaction between the cellulose and magnetic nanoparticles depends on the nanocellulose content. Further, a transition from cellulose II to cellulose I allomorph is observed. SEM and EDS are employed to determine the variation in morphology with changes in component concentrations. By the calculation of magnetic interactions between adjacent Fe3+ and Fe2+ ions within composites, it is determined that ferromagnetic coupling predominates.",
journal = "Polymers",
title = "Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials",
pages = "1819",
volume = "14",
number = "9",
doi = "10.3390/polym14091819",
url = "https://hdl.handle.net/21.15107/rcub_dais_13152"
}
Janićijević, A., Pavlović, V. P., Kovačević, D., Perić, M., Vlahović, B., Pavlović, V. B.,& Filipović, S.. (2022). Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials. in Polymers, 14(9), 1819.
https://doi.org/10.3390/polym14091819
https://hdl.handle.net/21.15107/rcub_dais_13152
Janićijević A, Pavlović VP, Kovačević D, Perić M, Vlahović B, Pavlović VB, Filipović S. Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials. in Polymers. 2022;14(9):1819.
doi:10.3390/polym14091819
https://hdl.handle.net/21.15107/rcub_dais_13152 .
Janićijević, Aleksandra, Pavlović, Vera P., Kovačević, Danijela, Perić, Marko, Vlahović, Branislav, Pavlović, Vladimir B., Filipović, Suzana, "Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials" in Polymers, 14, no. 9 (2022):1819,
https://doi.org/10.3390/polym14091819 .,
https://hdl.handle.net/21.15107/rcub_dais_13152 .

Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties

Mirković, Miljana; Filipović, Suzana; Kalijadis, Ana; Mašković, Pavle; Mašković, Jelena; Vlahović, Branislav; Pavlović, Vladimir B.

(2022)

TY  - JOUR
AU  - Mirković, Miljana
AU  - Filipović, Suzana
AU  - Kalijadis, Ana
AU  - Mašković, Pavle
AU  - Mašković, Jelena
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13153
AB  - Due to the growing number of people infected with the new coronavirus globally, which weakens immunity, there has been an increase in bacterial infections. Hence, knowledge about simple and low-cost synthesis methods of materials with good structural and antimicrobial properties is of great importance. A material obtained through the combination of a nanoscale hydroxyapatite material (with good biocompatibility) and titanium dioxide (with good degradation properties of organic molecules) can absorb and decompose bacteria. In this investigation, three different synthesis routes used to prepare hydroxyapatite/titanium dioxide nanomaterials are examined. The morphology and semiquantitative chemical composition are characterized by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX). The obtained materials’ phase and structural characterization are determined using the X-ray powder diffraction method (XRD). The crystallite sizes of the obtained materials are in the range of 8 nm to 15 nm. Based on XRD peak positions, the hexagonal hydroxyapatite phases are formed in all samples along with TiO2 anatase and rutile phases. According to SEM and TEM analyses, the morphology of the prepared samples differs depending on the synthesis route. The EDX analysis confirmed the presence of Ti, Ca, P, and O in the obtained materials. The IR spectroscopy verified the vibration bands characteristic for HAp and titanium. The investigated materials show excellent antimicrobial and photocatalytic properties.
T2  - Antibiotics
T1  - Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties
SP  - 592
VL  - 11
IS  - 5
DO  - 10.3390/antibiotics11050592
UR  - https://hdl.handle.net/21.15107/rcub_dais_13153
ER  - 
@article{
author = "Mirković, Miljana and Filipović, Suzana and Kalijadis, Ana and Mašković, Pavle and Mašković, Jelena and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2022",
abstract = "Due to the growing number of people infected with the new coronavirus globally, which weakens immunity, there has been an increase in bacterial infections. Hence, knowledge about simple and low-cost synthesis methods of materials with good structural and antimicrobial properties is of great importance. A material obtained through the combination of a nanoscale hydroxyapatite material (with good biocompatibility) and titanium dioxide (with good degradation properties of organic molecules) can absorb and decompose bacteria. In this investigation, three different synthesis routes used to prepare hydroxyapatite/titanium dioxide nanomaterials are examined. The morphology and semiquantitative chemical composition are characterized by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX). The obtained materials’ phase and structural characterization are determined using the X-ray powder diffraction method (XRD). The crystallite sizes of the obtained materials are in the range of 8 nm to 15 nm. Based on XRD peak positions, the hexagonal hydroxyapatite phases are formed in all samples along with TiO2 anatase and rutile phases. According to SEM and TEM analyses, the morphology of the prepared samples differs depending on the synthesis route. The EDX analysis confirmed the presence of Ti, Ca, P, and O in the obtained materials. The IR spectroscopy verified the vibration bands characteristic for HAp and titanium. The investigated materials show excellent antimicrobial and photocatalytic properties.",
journal = "Antibiotics",
title = "Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties",
pages = "592",
volume = "11",
number = "5",
doi = "10.3390/antibiotics11050592",
url = "https://hdl.handle.net/21.15107/rcub_dais_13153"
}
Mirković, M., Filipović, S., Kalijadis, A., Mašković, P., Mašković, J., Vlahović, B.,& Pavlović, V. B.. (2022). Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties. in Antibiotics, 11(5), 592.
https://doi.org/10.3390/antibiotics11050592
https://hdl.handle.net/21.15107/rcub_dais_13153
Mirković M, Filipović S, Kalijadis A, Mašković P, Mašković J, Vlahović B, Pavlović VB. Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties. in Antibiotics. 2022;11(5):592.
doi:10.3390/antibiotics11050592
https://hdl.handle.net/21.15107/rcub_dais_13153 .
Mirković, Miljana, Filipović, Suzana, Kalijadis, Ana, Mašković, Pavle, Mašković, Jelena, Vlahović, Branislav, Pavlović, Vladimir B., "Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties" in Antibiotics, 11, no. 5 (2022):592,
https://doi.org/10.3390/antibiotics11050592 .,
https://hdl.handle.net/21.15107/rcub_dais_13153 .

Optimizacija parametara sinteze nanokompozita na bazi bakterijske nanoceluloze/Fe3O4

Janićijević, Aleksandra; Sknepnek, Aleksandra; Mirković, Miljana; Pavlović, Vladimir; Filipović, Suzana

(Beograd : Savez inženjera i tehničara Srbije, 2021)

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Sknepnek, Aleksandra
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir
AU  - Filipović, Suzana
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12342
AB  - Napredak u mnogim oblastima tehnike i tehnologije je blisko povezan sa razvojem novih ili unapređenjem postojećih materijala. Imajući u vidu široku primenu bakterijske nanoceluloze (BNC) u raznim oblastima svakodnevnog života, od biomedicine, ekologije do elektronike, kompoziti na bazi BNC su sve rasprostranjeniji i privlače pažnju naučne zajednice. Posebno je značajno detaljno ispitati parametre sinteze koji utiču na promene u kristalnoj strukturi i morfologiji dobijenih kompozita, imajući u vidu da ove promene imaju značajan uticaj na krajnja funkcionalna svojstva. U ovom radu je proučavan kompozitni materijal zasnovan na bakterijskoj nanocelulozi BNC (kao početnoj komponenti) i feromagnetnom Fe3O4. BNC je dobijena aktivnošću bakterija sirćetnog vrenja nakon 7 dana rasta u odgovarajućem medijuma. Istraživanje je usmereno na optimizaciju uslova precipitacije Fe3O4, koji se odnose na promenu intervala stajanja BNC filmova u rastvoru soli gvožđa. Uticaj različitih uslova sinteze je analiziran metodama SEM-EDS, FTIR i XRD.
AB  - Development in many areas of engineering and technology are closely linked to the development of new or improvement of existing materials. Having in mind wide use of bacterial nanocellulose (BNC) in various areas of everyday life, from biomedicine, ecology to electronics, BNC-based composites are becoming widely used and attracting the attention of the scientific community. It is especially important to examine in detail the synthesis parameters that affect the changes in the crystal structure and morphology of the obtained composites, having in mind that these changes have a crucial influence on their final functional properties. In this paper, a composite material based on bacterial nanocellulose BNC (as the matrix) and ferromagnetic Fe3O4 was studied. BNC was obtained by the activity of acetic fermentation bacteria after 7 days of growth in a suitable medium. The research is aimed to optimization of the Fe3O4 precipitation conditions. It's especially considering the time interval of BNC films spend in the iron salt solution. The influence of the performed synthesis conditions was considered by the SEMEDS, FTIR and XRD methods.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Optimizacija parametara sinteze nanokompozita na bazi bakterijske nanoceluloze/Fe3O4
SP  - 273
EP  - 278
VL  - 76
IS  - 3
DO  - 10.5937/tehnika2103273J
UR  - https://hdl.handle.net/21.15107/rcub_dais_12342
ER  - 
@article{
author = "Janićijević, Aleksandra and Sknepnek, Aleksandra and Mirković, Miljana and Pavlović, Vladimir and Filipović, Suzana",
year = "2021",
abstract = "Napredak u mnogim oblastima tehnike i tehnologije je blisko povezan sa razvojem novih ili unapređenjem postojećih materijala. Imajući u vidu široku primenu bakterijske nanoceluloze (BNC) u raznim oblastima svakodnevnog života, od biomedicine, ekologije do elektronike, kompoziti na bazi BNC su sve rasprostranjeniji i privlače pažnju naučne zajednice. Posebno je značajno detaljno ispitati parametre sinteze koji utiču na promene u kristalnoj strukturi i morfologiji dobijenih kompozita, imajući u vidu da ove promene imaju značajan uticaj na krajnja funkcionalna svojstva. U ovom radu je proučavan kompozitni materijal zasnovan na bakterijskoj nanocelulozi BNC (kao početnoj komponenti) i feromagnetnom Fe3O4. BNC je dobijena aktivnošću bakterija sirćetnog vrenja nakon 7 dana rasta u odgovarajućem medijuma. Istraživanje je usmereno na optimizaciju uslova precipitacije Fe3O4, koji se odnose na promenu intervala stajanja BNC filmova u rastvoru soli gvožđa. Uticaj različitih uslova sinteze je analiziran metodama SEM-EDS, FTIR i XRD., Development in many areas of engineering and technology are closely linked to the development of new or improvement of existing materials. Having in mind wide use of bacterial nanocellulose (BNC) in various areas of everyday life, from biomedicine, ecology to electronics, BNC-based composites are becoming widely used and attracting the attention of the scientific community. It is especially important to examine in detail the synthesis parameters that affect the changes in the crystal structure and morphology of the obtained composites, having in mind that these changes have a crucial influence on their final functional properties. In this paper, a composite material based on bacterial nanocellulose BNC (as the matrix) and ferromagnetic Fe3O4 was studied. BNC was obtained by the activity of acetic fermentation bacteria after 7 days of growth in a suitable medium. The research is aimed to optimization of the Fe3O4 precipitation conditions. It's especially considering the time interval of BNC films spend in the iron salt solution. The influence of the performed synthesis conditions was considered by the SEMEDS, FTIR and XRD methods.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Optimizacija parametara sinteze nanokompozita na bazi bakterijske nanoceluloze/Fe3O4",
pages = "273-278",
volume = "76",
number = "3",
doi = "10.5937/tehnika2103273J",
url = "https://hdl.handle.net/21.15107/rcub_dais_12342"
}
Janićijević, A., Sknepnek, A., Mirković, M., Pavlović, V.,& Filipović, S.. (2021). Optimizacija parametara sinteze nanokompozita na bazi bakterijske nanoceluloze/Fe3O4. in Tehnika
Beograd : Savez inženjera i tehničara Srbije., 76(3), 273-278.
https://doi.org/10.5937/tehnika2103273J
https://hdl.handle.net/21.15107/rcub_dais_12342
Janićijević A, Sknepnek A, Mirković M, Pavlović V, Filipović S. Optimizacija parametara sinteze nanokompozita na bazi bakterijske nanoceluloze/Fe3O4. in Tehnika. 2021;76(3):273-278.
doi:10.5937/tehnika2103273J
https://hdl.handle.net/21.15107/rcub_dais_12342 .
Janićijević, Aleksandra, Sknepnek, Aleksandra, Mirković, Miljana, Pavlović, Vladimir, Filipović, Suzana, "Optimizacija parametara sinteze nanokompozita na bazi bakterijske nanoceluloze/Fe3O4" in Tehnika, 76, no. 3 (2021):273-278,
https://doi.org/10.5937/tehnika2103273J .,
https://hdl.handle.net/21.15107/rcub_dais_12342 .

Phase morphological and antimicrobial properties of HAp-TiO2 nanomaterials obtained by different synthesis route

Mirković, Miljana; Filipović, Suzana; Masković, Pavle; Pavlović, Vladimir B.

(Belgrade : Innovation Center of Faculty of Mechanical Engineering, 2021)

TY  - CONF
AU  - Mirković, Miljana
AU  - Filipović, Suzana
AU  - Masković, Pavle
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12346
AB  - Due to the growing number of people infected with the new corona virus in the world, there is an increase in bacterial infections, which weakens the immunity. New knowledge about simple and low cost synthesis methods of materials with good structural and antimicrobial properties are of great importance nowadays. Combination of bio ceramic Hydroxyapatite material with good biocompatible characteristics and Titanium dioxide material with good degradation properties of organic molecules when combine together has ability to absorb and decompose the bacteria. Hydroxyapatite/titanium dioxide nanomaterials have been prepared by tree different synthesis route. The morphology and semi quantitative chemical analysis were characterized by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX). Phase and structural characterization of obtained materials were determined using X-ray powder diffraction method (XRD). The crystallite sizes of the obtained materials were evaluated in the average range from 8 nm to 15 nm. Due to phase analysis by XRD characterization the peak shows presence of anatase phase with hydroxyapatite. Based on XRD peaks positions the hexagonal hydroxyapatite phases are formed in every synthesis route with TiO2 anatase phase. The microstructural studies confirmed that the nanosized HAp coated in a different way with TiO2 depending on a synthesis route. EDX analysis confirmed presence of Ti, Ca, P, O in obtained materials. The IR spectroscopy confirmed vibrational bands characteristic for HAp and titanium with anatase phase. The investigated materials show satisfactory antimicrobial properties.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1  - Phase morphological and antimicrobial properties of HAp-TiO2 nanomaterials obtained by different synthesis route
SP  - 14
EP  - 14
UR  - https://hdl.handle.net/21.15107/rcub_dais_12346
ER  - 
@conference{
author = "Mirković, Miljana and Filipović, Suzana and Masković, Pavle and Pavlović, Vladimir B.",
year = "2021",
abstract = "Due to the growing number of people infected with the new corona virus in the world, there is an increase in bacterial infections, which weakens the immunity. New knowledge about simple and low cost synthesis methods of materials with good structural and antimicrobial properties are of great importance nowadays. Combination of bio ceramic Hydroxyapatite material with good biocompatible characteristics and Titanium dioxide material with good degradation properties of organic molecules when combine together has ability to absorb and decompose the bacteria. Hydroxyapatite/titanium dioxide nanomaterials have been prepared by tree different synthesis route. The morphology and semi quantitative chemical analysis were characterized by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX). Phase and structural characterization of obtained materials were determined using X-ray powder diffraction method (XRD). The crystallite sizes of the obtained materials were evaluated in the average range from 8 nm to 15 nm. Due to phase analysis by XRD characterization the peak shows presence of anatase phase with hydroxyapatite. Based on XRD peaks positions the hexagonal hydroxyapatite phases are formed in every synthesis route with TiO2 anatase phase. The microstructural studies confirmed that the nanosized HAp coated in a different way with TiO2 depending on a synthesis route. EDX analysis confirmed presence of Ti, Ca, P, O in obtained materials. The IR spectroscopy confirmed vibrational bands characteristic for HAp and titanium with anatase phase. The investigated materials show satisfactory antimicrobial properties.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "Phase morphological and antimicrobial properties of HAp-TiO2 nanomaterials obtained by different synthesis route",
pages = "14-14",
url = "https://hdl.handle.net/21.15107/rcub_dais_12346"
}
Mirković, M., Filipović, S., Masković, P.,& Pavlović, V. B.. (2021). Phase morphological and antimicrobial properties of HAp-TiO2 nanomaterials obtained by different synthesis route. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 14-14.
https://hdl.handle.net/21.15107/rcub_dais_12346
Mirković M, Filipović S, Masković P, Pavlović VB. Phase morphological and antimicrobial properties of HAp-TiO2 nanomaterials obtained by different synthesis route. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:14-14.
https://hdl.handle.net/21.15107/rcub_dais_12346 .
Mirković, Miljana, Filipović, Suzana, Masković, Pavle, Pavlović, Vladimir B., "Phase morphological and antimicrobial properties of HAp-TiO2 nanomaterials obtained by different synthesis route" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):14-14,
https://hdl.handle.net/21.15107/rcub_dais_12346 .

Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes

Vujančević, Jelena; Ćirković, Jovana; Horváth, Endre; Forró, László; Pavlović, Vladimir B.; Janaćković, Đorđe

(Belgrade : Innovation Center of Faculty of Mechanical Engineering, 2021)

TY  - CONF
AU  - Vujančević, Jelena
AU  - Ćirković, Jovana
AU  - Horváth, Endre
AU  - Forró, László
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12347
AB  - TiO2 under UV light generates charge carriers (electrons and holes) that take part in the process of decomposition of pollutants, which is a well-known fact for the past few decades. For this reason, TiO2 is used for photocatalytic purification water and air. Photoactivity of TiO2 depends on the amount of generated charge carriers, and one part of those carriers are lost through the process of recombination. In order to improve photoactivity, it is necessary to speed up transport of electrons and holes. For better and faster charge carrier transport a unidirectional path is desired, which can be obtained by synthesizing 1D morphology. Anodization of titanium foil is a good way to obtain perpendicular nanotubular morphology onto a substrate. Nanotubular morphology can be optimized via operative conditions of anodization: applied voltage, anodization time and type of electrolyte. In this work, TiO2 nanotube arrays were synthesized by anodization of titanium foil at different voltages: 10 V, 15 V, 20 V and 25 V. Based on FESEM (Field Emission Scanning Electron Microscopy) micrographs, the microstructure of nanotubes was analysed and data concerning wall thickness, outer diameter of nanotubes and active surface were considered. Also, the influence of nanotube morphology on optical properties was determined. Results of our research show that the increasement in anodization voltage influenced on the appearance of redshift in the absorption spectrum. The sample synthesized at 20 V showed the highest photocatalytic activity due to the optimal nanotube length and nanotube diameter.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1  - Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes
SP  - 23
EP  - 23
UR  - https://hdl.handle.net/21.15107/rcub_dais_12347
ER  - 
@conference{
author = "Vujančević, Jelena and Ćirković, Jovana and Horváth, Endre and Forró, László and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2021",
abstract = "TiO2 under UV light generates charge carriers (electrons and holes) that take part in the process of decomposition of pollutants, which is a well-known fact for the past few decades. For this reason, TiO2 is used for photocatalytic purification water and air. Photoactivity of TiO2 depends on the amount of generated charge carriers, and one part of those carriers are lost through the process of recombination. In order to improve photoactivity, it is necessary to speed up transport of electrons and holes. For better and faster charge carrier transport a unidirectional path is desired, which can be obtained by synthesizing 1D morphology. Anodization of titanium foil is a good way to obtain perpendicular nanotubular morphology onto a substrate. Nanotubular morphology can be optimized via operative conditions of anodization: applied voltage, anodization time and type of electrolyte. In this work, TiO2 nanotube arrays were synthesized by anodization of titanium foil at different voltages: 10 V, 15 V, 20 V and 25 V. Based on FESEM (Field Emission Scanning Electron Microscopy) micrographs, the microstructure of nanotubes was analysed and data concerning wall thickness, outer diameter of nanotubes and active surface were considered. Also, the influence of nanotube morphology on optical properties was determined. Results of our research show that the increasement in anodization voltage influenced on the appearance of redshift in the absorption spectrum. The sample synthesized at 20 V showed the highest photocatalytic activity due to the optimal nanotube length and nanotube diameter.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes",
pages = "23-23",
url = "https://hdl.handle.net/21.15107/rcub_dais_12347"
}
Vujančević, J., Ćirković, J., Horváth, E., Forró, L., Pavlović, V. B.,& Janaćković, Đ.. (2021). Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 23-23.
https://hdl.handle.net/21.15107/rcub_dais_12347
Vujančević J, Ćirković J, Horváth E, Forró L, Pavlović VB, Janaćković Đ. Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:23-23.
https://hdl.handle.net/21.15107/rcub_dais_12347 .
Vujančević, Jelena, Ćirković, Jovana, Horváth, Endre, Forró, László, Pavlović, Vladimir B., Janaćković, Đorđe, "Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):23-23,
https://hdl.handle.net/21.15107/rcub_dais_12347 .

Effects of synthesis parameters on structure and properties of the ceramic/polymer films based on bacterial cellulose

Sknepnek, Aleksandra; Filipović, Suzana; Masković, Pavle; Mirković, Miljana; Miletić, Dunja; Nikšić, Miomir; Pavlović, Vladimir B.

(Belgrade : Innovation Center of Faculty of Mechanical Engineering, 2021)

TY  - CONF
AU  - Sknepnek, Aleksandra
AU  - Filipović, Suzana
AU  - Masković, Pavle
AU  - Mirković, Miljana
AU  - Miletić, Dunja
AU  - Nikšić, Miomir
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12348
AB  - Cellulose, as the main constituent of plants, is the most common natural material that is widely used. Bacterial cellulose (BC) is a polymer of β-1,4-glucan chains, extracellularly attached to bacterial cells. It possesses the same structure as plant cellulose but its application has many advantages. BC has tinner threads, better crystallinity, mechanical strength and higher purity. By the means of micro- and nano-pores in the structure, it is possible to retain nano particles and enhance the application of obtained nanostructures. BC lacks antibacterial and antioxidative activity, conductivity and magnetic properties, which lowers the possibility of its application in biomedicine and electronics. To overcome previously mentioned deficiency, it is possible to apply bioactive polymers, nanomaterials or solid particles into the structure. High biocidal potential of TiO2 originates from its photocatalytic properties, and the generation of reactive oxygen species (ROS). At the first site of action, they cause cell membrane damage and afterwards, they attack intracellular components causing cell death. Hydroxyapatite (HAp) is capable to act synergistically with TiO2 and to accelerate its efficiency. Having in mind all characteristics of previously mentioned components, we have investigated the structure, morphology, mechanical properties and antimicrobial activity of advanced ceramics/polymer films. The influence of synthesis duration on BC structure, produced by Komagataeibacter xylinus species, was investigated. Thereafter, the possibility of TiO2/HAp ceramic nanocomposite application in BC was examined. The developed structures were analyzed by SEM and EDS analyzes, as well as XRD and FTIR spectroscopy. Mechanical properties were investigated as well.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1  - Effects of synthesis parameters on structure and properties of the ceramic/polymer films based on bacterial cellulose
SP  - 78
EP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_dais_12348
ER  - 
@conference{
author = "Sknepnek, Aleksandra and Filipović, Suzana and Masković, Pavle and Mirković, Miljana and Miletić, Dunja and Nikšić, Miomir and Pavlović, Vladimir B.",
year = "2021",
abstract = "Cellulose, as the main constituent of plants, is the most common natural material that is widely used. Bacterial cellulose (BC) is a polymer of β-1,4-glucan chains, extracellularly attached to bacterial cells. It possesses the same structure as plant cellulose but its application has many advantages. BC has tinner threads, better crystallinity, mechanical strength and higher purity. By the means of micro- and nano-pores in the structure, it is possible to retain nano particles and enhance the application of obtained nanostructures. BC lacks antibacterial and antioxidative activity, conductivity and magnetic properties, which lowers the possibility of its application in biomedicine and electronics. To overcome previously mentioned deficiency, it is possible to apply bioactive polymers, nanomaterials or solid particles into the structure. High biocidal potential of TiO2 originates from its photocatalytic properties, and the generation of reactive oxygen species (ROS). At the first site of action, they cause cell membrane damage and afterwards, they attack intracellular components causing cell death. Hydroxyapatite (HAp) is capable to act synergistically with TiO2 and to accelerate its efficiency. Having in mind all characteristics of previously mentioned components, we have investigated the structure, morphology, mechanical properties and antimicrobial activity of advanced ceramics/polymer films. The influence of synthesis duration on BC structure, produced by Komagataeibacter xylinus species, was investigated. Thereafter, the possibility of TiO2/HAp ceramic nanocomposite application in BC was examined. The developed structures were analyzed by SEM and EDS analyzes, as well as XRD and FTIR spectroscopy. Mechanical properties were investigated as well.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "Effects of synthesis parameters on structure and properties of the ceramic/polymer films based on bacterial cellulose",
pages = "78-78",
url = "https://hdl.handle.net/21.15107/rcub_dais_12348"
}
Sknepnek, A., Filipović, S., Masković, P., Mirković, M., Miletić, D., Nikšić, M.,& Pavlović, V. B.. (2021). Effects of synthesis parameters on structure and properties of the ceramic/polymer films based on bacterial cellulose. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 78-78.
https://hdl.handle.net/21.15107/rcub_dais_12348
Sknepnek A, Filipović S, Masković P, Mirković M, Miletić D, Nikšić M, Pavlović VB. Effects of synthesis parameters on structure and properties of the ceramic/polymer films based on bacterial cellulose. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:78-78.
https://hdl.handle.net/21.15107/rcub_dais_12348 .
Sknepnek, Aleksandra, Filipović, Suzana, Masković, Pavle, Mirković, Miljana, Miletić, Dunja, Nikšić, Miomir, Pavlović, Vladimir B., "Effects of synthesis parameters on structure and properties of the ceramic/polymer films based on bacterial cellulose" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):78-78,
https://hdl.handle.net/21.15107/rcub_dais_12348 .

The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics

Živojinović, Jelena; Blagojević, Vladimir A.; Pavlović, Vera P.; Kosanović, Darko; Tadić, Nenad B.; Pavlović, Vladimir B.

(Belgrade : Innovation Center of Faculty of Mechanical Engineering, 2021)

TY  - CONF
AU  - Živojinović, Jelena
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Kosanović, Darko
AU  - Tadić, Nenad B.
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12349
AB  - In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz-3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1  - The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics
SP  - 80
EP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_dais_12349
ER  - 
@conference{
author = "Živojinović, Jelena and Blagojević, Vladimir A. and Pavlović, Vera P. and Kosanović, Darko and Tadić, Nenad B. and Pavlović, Vladimir B.",
year = "2021",
abstract = "In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz-3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics",
pages = "80-80",
url = "https://hdl.handle.net/21.15107/rcub_dais_12349"
}
Živojinović, J., Blagojević, V. A., Pavlović, V. P., Kosanović, D., Tadić, N. B.,& Pavlović, V. B.. (2021). The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 80-80.
https://hdl.handle.net/21.15107/rcub_dais_12349
Živojinović J, Blagojević VA, Pavlović VP, Kosanović D, Tadić NB, Pavlović VB. The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:80-80.
https://hdl.handle.net/21.15107/rcub_dais_12349 .
Živojinović, Jelena, Blagojević, Vladimir A., Pavlović, Vera P., Kosanović, Darko, Tadić, Nenad B., Pavlović, Vladimir B., "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):80-80,
https://hdl.handle.net/21.15107/rcub_dais_12349 .

Measurement of dielectric permitivity using coaxial chambers and electromagnetic-modeling software

Obradović, Nina; Peleš, Adriana; Olćan, Dragan; Fahrenholtz, William G.; Đorđević, Antonije; Pavlović, Vladimir B.

(Belgrade : Innovation Center of Faculty of Mechanical Engineering, 2021)

TY  - CONF
AU  - Obradović, Nina
AU  - Peleš, Adriana
AU  - Olćan, Dragan
AU  - Fahrenholtz, William G.
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12351
AB  - Our research group has developed a method for measurement of complex relative permittivity of various dielectric materials in the frequency range from around 1 kHz up to several GHz. Material samples have preferably a disk shape. The thicknesses of the samples can be in a wide range, from about 10 μm (thick films) up to several mm. We have designed and manufactured a set of coaxial chambers, which we use as test fixtures. We have also developed two numerical-simulation programs for the electromagnetic analysis of bodies with rotational symmetry. One program is suitable for the low-frequency analysis. It is based on an electrostatic approach. The other program is based on an electrodynamic approach and it is tailored for microwave frequencies. In measurements, we use impedance meters and network analyzers to obtain the input impedance of a chamber with a sample. Thereafter, we implement our software for the electromagnetic modeling to extract the relative permittivity of the measured sample. As examples of verification of our method, we present here results for the relative permittivities of two sets of samples whose sizes are on the extreme limits of the method. The first set comprises poly (vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films, whose relative permittivities are around 1.8. The second set comprises large, high-density samples of spinel (aluminum magnesium oxide) ceramics, sintered under various conditions. The measured relative permittivities of these samples are around 7.5. In all cases, good agreement with other available data has been obtained.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1  - Measurement of dielectric permitivity using coaxial chambers and electromagnetic-modeling software
SP  - 82
EP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_dais_12351
ER  - 
@conference{
author = "Obradović, Nina and Peleš, Adriana and Olćan, Dragan and Fahrenholtz, William G. and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2021",
abstract = "Our research group has developed a method for measurement of complex relative permittivity of various dielectric materials in the frequency range from around 1 kHz up to several GHz. Material samples have preferably a disk shape. The thicknesses of the samples can be in a wide range, from about 10 μm (thick films) up to several mm. We have designed and manufactured a set of coaxial chambers, which we use as test fixtures. We have also developed two numerical-simulation programs for the electromagnetic analysis of bodies with rotational symmetry. One program is suitable for the low-frequency analysis. It is based on an electrostatic approach. The other program is based on an electrodynamic approach and it is tailored for microwave frequencies. In measurements, we use impedance meters and network analyzers to obtain the input impedance of a chamber with a sample. Thereafter, we implement our software for the electromagnetic modeling to extract the relative permittivity of the measured sample. As examples of verification of our method, we present here results for the relative permittivities of two sets of samples whose sizes are on the extreme limits of the method. The first set comprises poly (vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films, whose relative permittivities are around 1.8. The second set comprises large, high-density samples of spinel (aluminum magnesium oxide) ceramics, sintered under various conditions. The measured relative permittivities of these samples are around 7.5. In all cases, good agreement with other available data has been obtained.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "Measurement of dielectric permitivity using coaxial chambers and electromagnetic-modeling software",
pages = "82-82",
url = "https://hdl.handle.net/21.15107/rcub_dais_12351"
}
Obradović, N., Peleš, A., Olćan, D., Fahrenholtz, W. G., Đorđević, A.,& Pavlović, V. B.. (2021). Measurement of dielectric permitivity using coaxial chambers and electromagnetic-modeling software. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 82-82.
https://hdl.handle.net/21.15107/rcub_dais_12351
Obradović N, Peleš A, Olćan D, Fahrenholtz WG, Đorđević A, Pavlović VB. Measurement of dielectric permitivity using coaxial chambers and electromagnetic-modeling software. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:82-82.
https://hdl.handle.net/21.15107/rcub_dais_12351 .
Obradović, Nina, Peleš, Adriana, Olćan, Dragan, Fahrenholtz, William G., Đorđević, Antonije, Pavlović, Vladimir B., "Measurement of dielectric permitivity using coaxial chambers and electromagnetic-modeling software" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):82-82,
https://hdl.handle.net/21.15107/rcub_dais_12351 .

Sinteza i struktura bakterijske celuloze primenom bakterija sirćetnog vrenja

Janićijević, Aleksandra; Filipović, Suzana; Pavlović, Vladimir B.; Sknepnek, Aleksandra; Kovačević, Danijela; Đorđević, Nenad; Mirković, Miljana; Živković, Predrag

(Čačak : Univerzitet u Kragujevcu, Agronomski fakultet, 2021)

TY  - CONF
AU  - Janićijević, Aleksandra
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Sknepnek, Aleksandra
AU  - Kovačević, Danijela
AU  - Đorđević, Nenad
AU  - Mirković, Miljana
AU  - Živković, Predrag
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12356
AB  - Kao jedan od najzastupljenijih biopolimera na Zemlji, celuloza je našla primenu u prehrambenoj industriji, biomedicini i biotehnologiji. Dobijanje celuloznih vlakana iz biljaka je praćeno prisustvom nusproizvoda, čije je uklanjanje zahtevan proces. Stoga, materijali na bazi bakterijske nanoceluloze (BCN), nalaze sve širu primenu u svakodnevnici. Imajući u vidu prednosti BCN, u ovom radu su ispitivane promene u strukturi i morfologiji BCN u funkciji parametara sinteze. Analiziran je uticaj vrste i zapremine medijuma, kao i dužine prečišćavanja u NaOH, na promene u prinosu i strukturi BCN. Navedene promene su ispitivane metodama XRD, FTIR, kao i primenom SEM i EDS analize.
AB  - As one of the most common biopolymers on Earth, cellulose has found an important role in food industry, biomedicine andbiotechnology. The process of obtaining cellulose fibers is often followed with the presence of the byproduct, whose removal is required procedure. From that reason, the process of obtaining material on a bacterial cellulose (BC) basis,finds wide application in everyday life. Having in mind her many features, we have investigated the change in structure and morphology of BC depending on the synthesis parameters. The influence of the medium volume and different time intervals of NaOH treatment relative to different BCN yields and structure. The mentioned changes were examined by XRD, FTIR spectroscopy, as well as SEM and EDS analyzes.
PB  - Čačak : Univerzitet u Kragujevcu, Agronomski fakultet
C3  - Zbornik radova [Elektronski izvor] / XXVI savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 12 - 13. mart 2021. godine
T1  - Sinteza i struktura bakterijske celuloze primenom bakterija sirćetnog vrenja
SP  - 281
EP  - 289
DO  - 10.46793/SBT26.281J
UR  - https://hdl.handle.net/21.15107/rcub_dais_12356
ER  - 
@conference{
author = "Janićijević, Aleksandra and Filipović, Suzana and Pavlović, Vladimir B. and Sknepnek, Aleksandra and Kovačević, Danijela and Đorđević, Nenad and Mirković, Miljana and Živković, Predrag",
year = "2021",
abstract = "Kao jedan od najzastupljenijih biopolimera na Zemlji, celuloza je našla primenu u prehrambenoj industriji, biomedicini i biotehnologiji. Dobijanje celuloznih vlakana iz biljaka je praćeno prisustvom nusproizvoda, čije je uklanjanje zahtevan proces. Stoga, materijali na bazi bakterijske nanoceluloze (BCN), nalaze sve širu primenu u svakodnevnici. Imajući u vidu prednosti BCN, u ovom radu su ispitivane promene u strukturi i morfologiji BCN u funkciji parametara sinteze. Analiziran je uticaj vrste i zapremine medijuma, kao i dužine prečišćavanja u NaOH, na promene u prinosu i strukturi BCN. Navedene promene su ispitivane metodama XRD, FTIR, kao i primenom SEM i EDS analize., As one of the most common biopolymers on Earth, cellulose has found an important role in food industry, biomedicine andbiotechnology. The process of obtaining cellulose fibers is often followed with the presence of the byproduct, whose removal is required procedure. From that reason, the process of obtaining material on a bacterial cellulose (BC) basis,finds wide application in everyday life. Having in mind her many features, we have investigated the change in structure and morphology of BC depending on the synthesis parameters. The influence of the medium volume and different time intervals of NaOH treatment relative to different BCN yields and structure. The mentioned changes were examined by XRD, FTIR spectroscopy, as well as SEM and EDS analyzes.",
publisher = "Čačak : Univerzitet u Kragujevcu, Agronomski fakultet",
journal = "Zbornik radova [Elektronski izvor] / XXVI savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 12 - 13. mart 2021. godine",
title = "Sinteza i struktura bakterijske celuloze primenom bakterija sirćetnog vrenja",
pages = "281-289",
doi = "10.46793/SBT26.281J",
url = "https://hdl.handle.net/21.15107/rcub_dais_12356"
}
Janićijević, A., Filipović, S., Pavlović, V. B., Sknepnek, A., Kovačević, D., Đorđević, N., Mirković, M.,& Živković, P.. (2021). Sinteza i struktura bakterijske celuloze primenom bakterija sirćetnog vrenja. in Zbornik radova [Elektronski izvor] / XXVI savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 12 - 13. mart 2021. godine
Čačak : Univerzitet u Kragujevcu, Agronomski fakultet., 281-289.
https://doi.org/10.46793/SBT26.281J
https://hdl.handle.net/21.15107/rcub_dais_12356
Janićijević A, Filipović S, Pavlović VB, Sknepnek A, Kovačević D, Đorđević N, Mirković M, Živković P. Sinteza i struktura bakterijske celuloze primenom bakterija sirćetnog vrenja. in Zbornik radova [Elektronski izvor] / XXVI savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 12 - 13. mart 2021. godine. 2021;:281-289.
doi:10.46793/SBT26.281J
https://hdl.handle.net/21.15107/rcub_dais_12356 .
Janićijević, Aleksandra, Filipović, Suzana, Pavlović, Vladimir B., Sknepnek, Aleksandra, Kovačević, Danijela, Đorđević, Nenad, Mirković, Miljana, Živković, Predrag, "Sinteza i struktura bakterijske celuloze primenom bakterija sirćetnog vrenja" in Zbornik radova [Elektronski izvor] / XXVI savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 12 - 13. mart 2021. godine (2021):281-289,
https://doi.org/10.46793/SBT26.281J .,
https://hdl.handle.net/21.15107/rcub_dais_12356 .
1

Effect of prolonged precipitation on morphology and crystal struture of the bacterial nanocelulose/Fe3O4 composite

Janićijević, Aleksandra; Pavlović, Vladimir B.; Sknepnek, A.; Mirković, M.; Kovačević, D.; Đorđević, Nataša; Filipović, Suzana

(Belgrade : Serbian Ceramic Society, 2021)

TY  - CONF
AU  - Janićijević, Aleksandra
AU  - Pavlović, Vladimir B.
AU  - Sknepnek, A.
AU  - Mirković, M.
AU  - Kovačević, D.
AU  - Đorđević, Nataša
AU  - Filipović, Suzana
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11905
AB  - Cellulose is a biopolymer with a wide range of properties like biocompatibility, hydrophilicity, porosity, good mechanical properties, biodegradability and non-toxicity. The properties and application of cellulose based materials are related to the source of the cellulose production. Despite the fact that the plant cellulose is playing a leading role in obtaining cellulose fibers, it has been found that ecologically and economically, a better source for obtaining cellulose is by fermenting a particular strain of bacteria. Although bacterial nano cellulose (BCN) based materials can be used in numerous industries, from the paper and food industries to biomedicine, their application in electronics is limited because bacterial cellulose does not have conductive and ferromagnetic properties. Having this in mind in this research, the results of the development of nanocomposite materials based on BCN modified with Fe3O4 has been presented. The differences in the interaction of Fe3O4 nanoparticles and BCN obtained by varying precipitation parameters were investigated and the effect of reaction time was followed by SEM-EDS, XRD, and FTIR analysis. It has been found that this type of modifications of the initial BCN, enables development of new composite materials with superior properties, which can be used in various fields of electronics.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Effect of prolonged precipitation on morphology and crystal struture of the bacterial nanocelulose/Fe3O4 composite
SP  - 55
EP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_dais_11905
ER  - 
@conference{
author = "Janićijević, Aleksandra and Pavlović, Vladimir B. and Sknepnek, A. and Mirković, M. and Kovačević, D. and Đorđević, Nataša and Filipović, Suzana",
year = "2021",
abstract = "Cellulose is a biopolymer with a wide range of properties like biocompatibility, hydrophilicity, porosity, good mechanical properties, biodegradability and non-toxicity. The properties and application of cellulose based materials are related to the source of the cellulose production. Despite the fact that the plant cellulose is playing a leading role in obtaining cellulose fibers, it has been found that ecologically and economically, a better source for obtaining cellulose is by fermenting a particular strain of bacteria. Although bacterial nano cellulose (BCN) based materials can be used in numerous industries, from the paper and food industries to biomedicine, their application in electronics is limited because bacterial cellulose does not have conductive and ferromagnetic properties. Having this in mind in this research, the results of the development of nanocomposite materials based on BCN modified with Fe3O4 has been presented. The differences in the interaction of Fe3O4 nanoparticles and BCN obtained by varying precipitation parameters were investigated and the effect of reaction time was followed by SEM-EDS, XRD, and FTIR analysis. It has been found that this type of modifications of the initial BCN, enables development of new composite materials with superior properties, which can be used in various fields of electronics.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Effect of prolonged precipitation on morphology and crystal struture of the bacterial nanocelulose/Fe3O4 composite",
pages = "55-56",
url = "https://hdl.handle.net/21.15107/rcub_dais_11905"
}
Janićijević, A., Pavlović, V. B., Sknepnek, A., Mirković, M., Kovačević, D., Đorđević, N.,& Filipović, S.. (2021). Effect of prolonged precipitation on morphology and crystal struture of the bacterial nanocelulose/Fe3O4 composite. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 55-56.
https://hdl.handle.net/21.15107/rcub_dais_11905
Janićijević A, Pavlović VB, Sknepnek A, Mirković M, Kovačević D, Đorđević N, Filipović S. Effect of prolonged precipitation on morphology and crystal struture of the bacterial nanocelulose/Fe3O4 composite. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:55-56.
https://hdl.handle.net/21.15107/rcub_dais_11905 .
Janićijević, Aleksandra, Pavlović, Vladimir B., Sknepnek, A., Mirković, M., Kovačević, D., Đorđević, Nataša, Filipović, Suzana, "Effect of prolonged precipitation on morphology and crystal struture of the bacterial nanocelulose/Fe3O4 composite" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):55-56,
https://hdl.handle.net/21.15107/rcub_dais_11905 .

PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix

Pavlović, Vera P.; Tošić, Dragana; Dojčilović, Radovan; Dudić, Duško; Dramićanin, Miroslav D.; Medić, Mina; McPherson, Michael M.; Pavlović, Vladimir B.; Vlahović, Branislav; Đoković, Vladimir

(Elsevier BV, 2021)

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Tošić, Dragana
AU  - Dojčilović, Radovan
AU  - Dudić, Duško
AU  - Dramićanin, Miroslav D.
AU  - Medić, Mina
AU  - McPherson, Michael M.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
AU  - Đoković, Vladimir
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/10535
AB  - Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz.
PB  - Elsevier BV
T2  - Polymer Testing
T1  - PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix
SP  - 107093
VL  - 96
DO  - 10.1016/j.polymertesting.2021.107093
UR  - https://hdl.handle.net/21.15107/rcub_dais_10535
ER  - 
@article{
author = "Pavlović, Vera P. and Tošić, Dragana and Dojčilović, Radovan and Dudić, Duško and Dramićanin, Miroslav D. and Medić, Mina and McPherson, Michael M. and Pavlović, Vladimir B. and Vlahović, Branislav and Đoković, Vladimir",
year = "2021",
abstract = "Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz.",
publisher = "Elsevier BV",
journal = "Polymer Testing",
title = "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix",
pages = "107093",
volume = "96",
doi = "10.1016/j.polymertesting.2021.107093",
url = "https://hdl.handle.net/21.15107/rcub_dais_10535"
}
Pavlović, V. P., Tošić, D., Dojčilović, R., Dudić, D., Dramićanin, M. D., Medić, M., McPherson, M. M., Pavlović, V. B., Vlahović, B.,& Đoković, V.. (2021). PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing
Elsevier BV., 96, 107093.
https://doi.org/10.1016/j.polymertesting.2021.107093
https://hdl.handle.net/21.15107/rcub_dais_10535
Pavlović VP, Tošić D, Dojčilović R, Dudić D, Dramićanin MD, Medić M, McPherson MM, Pavlović VB, Vlahović B, Đoković V. PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing. 2021;96:107093.
doi:10.1016/j.polymertesting.2021.107093
https://hdl.handle.net/21.15107/rcub_dais_10535 .
Pavlović, Vera P., Tošić, Dragana, Dojčilović, Radovan, Dudić, Duško, Dramićanin, Miroslav D., Medić, Mina, McPherson, Michael M., Pavlović, Vladimir B., Vlahović, Branislav, Đoković, Vladimir, "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix" in Polymer Testing, 96 (2021):107093,
https://doi.org/10.1016/j.polymertesting.2021.107093 .,
https://hdl.handle.net/21.15107/rcub_dais_10535 .
3
2
4

Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction

Filipović, Suzana; Obradović, Nina; Anđelković, Ljubica; Olćan, Dragan; Petrović, Jovana; Mirković, Miljana; Pavlović, Vladimir B.; Jeremić, Dejan; Vlahović, Branislav; Đorđević, Antonije

(Belgrade : International Institute for the Science of Sintering, 2021)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Anđelković, Ljubica
AU  - Olćan, Dragan
AU  - Petrović, Jovana
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir B.
AU  - Jeremić, Dejan
AU  - Vlahović, Branislav
AU  - Đorđević, Antonije
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11230
AB  - Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial BaTiO3 and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300 oC for 6 h. Sintering at 1300 oC for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19 and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3 phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3 with Fe2O3 resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction
SP  - 1
EP  - 8
VL  - 53
DO  - 10.2298/SOS2101001F
UR  - https://hdl.handle.net/21.15107/rcub_dais_11230
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Anđelković, Ljubica and Olćan, Dragan and Petrović, Jovana and Mirković, Miljana and Pavlović, Vladimir B. and Jeremić, Dejan and Vlahović, Branislav and Đorđević, Antonije",
year = "2021",
abstract = "Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial BaTiO3 and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300 oC for 6 h. Sintering at 1300 oC for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19 and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3 phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3 with Fe2O3 resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction",
pages = "1-8",
volume = "53",
doi = "10.2298/SOS2101001F",
url = "https://hdl.handle.net/21.15107/rcub_dais_11230"
}
Filipović, S., Obradović, N., Anđelković, L., Olćan, D., Petrović, J., Mirković, M., Pavlović, V. B., Jeremić, D., Vlahović, B.,& Đorđević, A.. (2021). Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 53, 1-8.
https://doi.org/10.2298/SOS2101001F
https://hdl.handle.net/21.15107/rcub_dais_11230
Filipović S, Obradović N, Anđelković L, Olćan D, Petrović J, Mirković M, Pavlović VB, Jeremić D, Vlahović B, Đorđević A. Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction. in Science of Sintering. 2021;53:1-8.
doi:10.2298/SOS2101001F
https://hdl.handle.net/21.15107/rcub_dais_11230 .
Filipović, Suzana, Obradović, Nina, Anđelković, Ljubica, Olćan, Dragan, Petrović, Jovana, Mirković, Miljana, Pavlović, Vladimir B., Jeremić, Dejan, Vlahović, Branislav, Đorđević, Antonije, "Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction" in Science of Sintering, 53 (2021):1-8,
https://doi.org/10.2298/SOS2101001F .,
https://hdl.handle.net/21.15107/rcub_dais_11230 .
1
1
2

Freeze versus Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material

Jovanović, Aleksandra A.; Lević, Steva; Pavlović, Vladimir B.; Marković, Smilja; Pjanović, Rada; Đorđević, Verica B.; Nedović, Viktor; Bugarski, Branko

(2021)

TY  - GEN
AU  - Jovanović, Aleksandra A.
AU  - Lević, Steva
AU  - Pavlović, Vladimir B.
AU  - Marković, Smilja
AU  - Pjanović, Rada
AU  - Đorđević, Verica B.
AU  - Nedović, Viktor
AU  - Bugarski, Branko
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11637
AB  - Freeze drying was compared with spray drying regarding feasibility to process wild thyme drug in order to obtain dry formulations at laboratory scale starting from liquid extracts produced by different extraction methods: maceration, heat-, ultrasound-, and microwave-assisted extractions. Higher powder yield (based on the dry weight prior to extraction) was achieved by freeze than spray drying and lower loss of total polyphenol content (TPC) and total flavonoid content (TFC) due to the drying process. Gelatin as a coating agent (5% w/w) provided better TPC recovery by 70% in case of lyophilization and higher powder yield in case of spray drying by diminishing material deposition on the wall of the drying chamber. The resulting gelatin-free and gelatin-containing powders carried polyphenols in amount ~190 and 53-75 mg gallic acid equivalents GAE/g of powder, respectively. Microwave-assisted extract formulation distinguished from others by higher content of polyphenols, proteins and sugars, higher bulk density and lower solubility. The type of the drying process affected mainly position of the gelatin-derived -OH and amide bands in FTIR spectra. Spray dried formulations compared to freeze dried expressed higher thermal stability as confirmed by differential scanning calorimetry analysis and higher diffusion coefficient; the last feature can be associated with the lower specific surface area of irregularly shaped freeze-dried particles (151-223 µm) compared to small microspheres (~8 µm) in spray-dried powder.
T2  - Preprints
T1  - Freeze versus Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material
DO  - 10.20944/preprints202105.0358.v1
UR  - https://hdl.handle.net/21.15107/rcub_dais_11637
ER  - 
@misc{
author = "Jovanović, Aleksandra A. and Lević, Steva and Pavlović, Vladimir B. and Marković, Smilja and Pjanović, Rada and Đorđević, Verica B. and Nedović, Viktor and Bugarski, Branko",
year = "2021",
abstract = "Freeze drying was compared with spray drying regarding feasibility to process wild thyme drug in order to obtain dry formulations at laboratory scale starting from liquid extracts produced by different extraction methods: maceration, heat-, ultrasound-, and microwave-assisted extractions. Higher powder yield (based on the dry weight prior to extraction) was achieved by freeze than spray drying and lower loss of total polyphenol content (TPC) and total flavonoid content (TFC) due to the drying process. Gelatin as a coating agent (5% w/w) provided better TPC recovery by 70% in case of lyophilization and higher powder yield in case of spray drying by diminishing material deposition on the wall of the drying chamber. The resulting gelatin-free and gelatin-containing powders carried polyphenols in amount ~190 and 53-75 mg gallic acid equivalents GAE/g of powder, respectively. Microwave-assisted extract formulation distinguished from others by higher content of polyphenols, proteins and sugars, higher bulk density and lower solubility. The type of the drying process affected mainly position of the gelatin-derived -OH and amide bands in FTIR spectra. Spray dried formulations compared to freeze dried expressed higher thermal stability as confirmed by differential scanning calorimetry analysis and higher diffusion coefficient; the last feature can be associated with the lower specific surface area of irregularly shaped freeze-dried particles (151-223 µm) compared to small microspheres (~8 µm) in spray-dried powder.",
journal = "Preprints",
title = "Freeze versus Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material",
doi = "10.20944/preprints202105.0358.v1",
url = "https://hdl.handle.net/21.15107/rcub_dais_11637"
}
Jovanović, A. A., Lević, S., Pavlović, V. B., Marković, S., Pjanović, R., Đorđević, V. B., Nedović, V.,& Bugarski, B.. (2021). Freeze versus Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material. in Preprints.
https://doi.org/10.20944/preprints202105.0358.v1
https://hdl.handle.net/21.15107/rcub_dais_11637
Jovanović AA, Lević S, Pavlović VB, Marković S, Pjanović R, Đorđević VB, Nedović V, Bugarski B. Freeze versus Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material. in Preprints. 2021;.
doi:10.20944/preprints202105.0358.v1
https://hdl.handle.net/21.15107/rcub_dais_11637 .
Jovanović, Aleksandra A., Lević, Steva, Pavlović, Vladimir B., Marković, Smilja, Pjanović, Rada, Đorđević, Verica B., Nedović, Viktor, Bugarski, Branko, "Freeze versus Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material" in Preprints (2021),
https://doi.org/10.20944/preprints202105.0358.v1 .,
https://hdl.handle.net/21.15107/rcub_dais_11637 .
1

High Heat Treatment of Goat Cheese Milk. The Effect on Sensory Profile, Consumer Acceptance and Microstructure of Cheese

Miloradović, Zorana; Tomić, Nikola; Kljajević, Nemanja; Lević, Steva; Pavlović, Vladimir B.; Blažić, Marijana; Miočinović, Jelena

(Basel : MDPI AG, 2021)

TY  - JOUR
AU  - Miloradović, Zorana
AU  - Tomić, Nikola
AU  - Kljajević, Nemanja
AU  - Lević, Steva
AU  - Pavlović, Vladimir B.
AU  - Blažić, Marijana
AU  - Miočinović, Jelena
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11644
AB  - Goat cheeses from high heat treated milk (HHTM: 80 °C/5 min (E1) and 90 °C/5 min (E2)), could be regarded as new products, compared to their analogues made from commonly pasteurized milk (65 °C/30 min (C)). Descriptive analysis and consumer tests with a hedonic scale and JAR scale were part of the product development process. The use of scanning electron microscopy enabled deeper insight into the flavor and texture of the cheeses. In all cheese variants, goaty flavor was mildly pronounced. Young HHTM cheeses also had a pronounced whey and cooked/milky flavor. Consumers found such flavor ‘too intensive’. Unlike the control variant, HHTM cheeses were not described as ‘too hard’. Such improvement in texture was found to be a result of fine, highly branched microstructure, sustained over the course of ripening time and highly incorporated milk fat globules inside the cheese mass. Cluster analysis showed that the largest group of consumers (47.5%) preferred E2 cheese. Although consumers found that most of the cheeses were ‘too salty’, this excess did not decrease their overall acceptance. Neither microstructure analysis nor descriptive sensory analysis of goat white brined cheeses produced from high heat treated milk has been done before.
PB  - Basel : MDPI AG
T2  - Foods
T1  - High Heat Treatment of Goat Cheese Milk. The Effect on Sensory Profile, Consumer Acceptance and Microstructure of Cheese
SP  - 1116
VL  - 10
IS  - 5
DO  - 10.3390/foods10051116
UR  - https://hdl.handle.net/21.15107/rcub_dais_11644
ER  - 
@article{
author = "Miloradović, Zorana and Tomić, Nikola and Kljajević, Nemanja and Lević, Steva and Pavlović, Vladimir B. and Blažić, Marijana and Miočinović, Jelena",
year = "2021",
abstract = "Goat cheeses from high heat treated milk (HHTM: 80 °C/5 min (E1) and 90 °C/5 min (E2)), could be regarded as new products, compared to their analogues made from commonly pasteurized milk (65 °C/30 min (C)). Descriptive analysis and consumer tests with a hedonic scale and JAR scale were part of the product development process. The use of scanning electron microscopy enabled deeper insight into the flavor and texture of the cheeses. In all cheese variants, goaty flavor was mildly pronounced. Young HHTM cheeses also had a pronounced whey and cooked/milky flavor. Consumers found such flavor ‘too intensive’. Unlike the control variant, HHTM cheeses were not described as ‘too hard’. Such improvement in texture was found to be a result of fine, highly branched microstructure, sustained over the course of ripening time and highly incorporated milk fat globules inside the cheese mass. Cluster analysis showed that the largest group of consumers (47.5%) preferred E2 cheese. Although consumers found that most of the cheeses were ‘too salty’, this excess did not decrease their overall acceptance. Neither microstructure analysis nor descriptive sensory analysis of goat white brined cheeses produced from high heat treated milk has been done before.",
publisher = "Basel : MDPI AG",
journal = "Foods",
title = "High Heat Treatment of Goat Cheese Milk. The Effect on Sensory Profile, Consumer Acceptance and Microstructure of Cheese",
pages = "1116",
volume = "10",
number = "5",
doi = "10.3390/foods10051116",
url = "https://hdl.handle.net/21.15107/rcub_dais_11644"
}
Miloradović, Z., Tomić, N., Kljajević, N., Lević, S., Pavlović, V. B., Blažić, M.,& Miočinović, J.. (2021). High Heat Treatment of Goat Cheese Milk. The Effect on Sensory Profile, Consumer Acceptance and Microstructure of Cheese. in Foods
Basel : MDPI AG., 10(5), 1116.
https://doi.org/10.3390/foods10051116
https://hdl.handle.net/21.15107/rcub_dais_11644
Miloradović Z, Tomić N, Kljajević N, Lević S, Pavlović VB, Blažić M, Miočinović J. High Heat Treatment of Goat Cheese Milk. The Effect on Sensory Profile, Consumer Acceptance and Microstructure of Cheese. in Foods. 2021;10(5):1116.
doi:10.3390/foods10051116
https://hdl.handle.net/21.15107/rcub_dais_11644 .
Miloradović, Zorana, Tomić, Nikola, Kljajević, Nemanja, Lević, Steva, Pavlović, Vladimir B., Blažić, Marijana, Miočinović, Jelena, "High Heat Treatment of Goat Cheese Milk. The Effect on Sensory Profile, Consumer Acceptance and Microstructure of Cheese" in Foods, 10, no. 5 (2021):1116,
https://doi.org/10.3390/foods10051116 .,
https://hdl.handle.net/21.15107/rcub_dais_11644 .

Freeze vs. Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material

Jovanović, Aleksandra A.; Lević, Steva M.; Pavlović, Vladimir B.; Marković, Smilja B.; Pjanović, Rada V.; Đorđević, Verica B.; Nedović, Viktor; Bugarski, Branko M.

(Basel : MDPI AG, 2021)

TY  - JOUR
AU  - Jovanović, Aleksandra A.
AU  - Lević, Steva M.
AU  - Pavlović, Vladimir B.
AU  - Marković, Smilja B.
AU  - Pjanović, Rada V.
AU  - Đorđević, Verica B.
AU  - Nedović, Viktor
AU  - Bugarski, Branko M.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11798
AB  - Freeze drying was compared with spray drying regarding feasibility to process wild thyme drugs in order to obtain dry formulations at laboratory scale starting from liquid extracts produced by different extraction methods: maceration and heat-, ultrasound-, and microwave-assisted extractions. Higher total powder yield (based on the dry weight prior to extraction) was achieved by freeze than spray drying and lower loss of total polyphenol content (TPC) and total flavonoid content (TFC) due to the drying process. Gelatin as a coating agent (5% w/w) provided better TPC recovery by 70% in case of lyophilization and higher total powder yield in case of spray drying by diminishing material deposition on the wall of the drying chamber. The resulting gelatin-free and gelatin-containing powders carried polyphenols in amount ~190 and 53–75 mg gallic acid equivalents GAE/g of powder, respectively. Microwave-assisted extract formulation was distinguished from the others by a higher content of polyphenols, proteins and sugars, higher bulk density and lower solubility. The type of the drying process mainly affected the position of the gelatin-derived -OH and amide bands in FTIR spectra. Spray-dried formulations compared to freeze-dried expressed higher thermal stability as confirmed by differential scanning calorimetry analysis and a higher diffusion coefficient; the last feature can be associated with the lower specific surface area of irregularly shaped freeze-dried particles (151–223 µm) compared to small microspheres (~8 µm) in spray-dried powder.
PB  - Basel : MDPI AG
T2  - Molecules
T1  - Freeze vs. Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material
SP  - 3933
VL  - 26
IS  - 13
DO  - 10.3390/molecules26133933
UR  - https://hdl.handle.net/21.15107/rcub_dais_11798
ER  - 
@article{
author = "Jovanović, Aleksandra A. and Lević, Steva M. and Pavlović, Vladimir B. and Marković, Smilja B. and Pjanović, Rada V. and Đorđević, Verica B. and Nedović, Viktor and Bugarski, Branko M.",
year = "2021",
abstract = "Freeze drying was compared with spray drying regarding feasibility to process wild thyme drugs in order to obtain dry formulations at laboratory scale starting from liquid extracts produced by different extraction methods: maceration and heat-, ultrasound-, and microwave-assisted extractions. Higher total powder yield (based on the dry weight prior to extraction) was achieved by freeze than spray drying and lower loss of total polyphenol content (TPC) and total flavonoid content (TFC) due to the drying process. Gelatin as a coating agent (5% w/w) provided better TPC recovery by 70% in case of lyophilization and higher total powder yield in case of spray drying by diminishing material deposition on the wall of the drying chamber. The resulting gelatin-free and gelatin-containing powders carried polyphenols in amount ~190 and 53–75 mg gallic acid equivalents GAE/g of powder, respectively. Microwave-assisted extract formulation was distinguished from the others by a higher content of polyphenols, proteins and sugars, higher bulk density and lower solubility. The type of the drying process mainly affected the position of the gelatin-derived -OH and amide bands in FTIR spectra. Spray-dried formulations compared to freeze-dried expressed higher thermal stability as confirmed by differential scanning calorimetry analysis and a higher diffusion coefficient; the last feature can be associated with the lower specific surface area of irregularly shaped freeze-dried particles (151–223 µm) compared to small microspheres (~8 µm) in spray-dried powder.",
publisher = "Basel : MDPI AG",
journal = "Molecules",
title = "Freeze vs. Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material",
pages = "3933",
volume = "26",
number = "13",
doi = "10.3390/molecules26133933",
url = "https://hdl.handle.net/21.15107/rcub_dais_11798"
}
Jovanović, A. A., Lević, S. M., Pavlović, V. B., Marković, S. B., Pjanović, R. V., Đorđević, V. B., Nedović, V.,& Bugarski, B. M.. (2021). Freeze vs. Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material. in Molecules
Basel : MDPI AG., 26(13), 3933.
https://doi.org/10.3390/molecules26133933
https://hdl.handle.net/21.15107/rcub_dais_11798
Jovanović AA, Lević SM, Pavlović VB, Marković SB, Pjanović RV, Đorđević VB, Nedović V, Bugarski BM. Freeze vs. Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material. in Molecules. 2021;26(13):3933.
doi:10.3390/molecules26133933
https://hdl.handle.net/21.15107/rcub_dais_11798 .
Jovanović, Aleksandra A., Lević, Steva M., Pavlović, Vladimir B., Marković, Smilja B., Pjanović, Rada V., Đorđević, Verica B., Nedović, Viktor, Bugarski, Branko M., "Freeze vs. Spray Drying for Dry Wild Thyme (Thymus serpyllum L.) Extract Formulations: The Impact of Gelatin as a Coating Material" in Molecules, 26, no. 13 (2021):3933,
https://doi.org/10.3390/molecules26133933 .,
https://hdl.handle.net/21.15107/rcub_dais_11798 .
8
4
7

The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers

Ivanović, Marija; Nenadović, Snežana; Pavlović, Vera P.; Radović, Ivona; Kijevčanin, Mirjana; Pavlović, Vladimir B.; Kljajević, Ljiljana

(Society of Chemists and Technologists of Macedonia, 2021)

TY  - JOUR
AU  - Ivanović, Marija
AU  - Nenadović, Snežana
AU  - Pavlović, Vera P.
AU  - Radović, Ivona
AU  - Kijevčanin, Mirjana
AU  - Pavlović, Vladimir B.
AU  - Kljajević, Ljiljana
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11800
AB  - Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 °C for the process of geopolymerization. Mixtures of Na2SiO3and NaOH of different molar concentrations (from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentrationalso shows the highest values of all thermodynamic parameters.Metakaolin, obtained by calcination of kaolin at 750 °C, was used as the starting material.The samples were characterized by X-ray diffraction (XRD),FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentra-tions of activators do not notably change the Si/Al ratio.
PB  - Society of Chemists and Technologists of Macedonia
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers
SP  - 99
VL  - 40
IS  - 1
DO  - 10.20450/mjcce.2021.2127
UR  - https://hdl.handle.net/21.15107/rcub_dais_11800
ER  - 
@article{
author = "Ivanović, Marija and Nenadović, Snežana and Pavlović, Vera P. and Radović, Ivona and Kijevčanin, Mirjana and Pavlović, Vladimir B. and Kljajević, Ljiljana",
year = "2021",
abstract = "Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 °C for the process of geopolymerization. Mixtures of Na2SiO3and NaOH of different molar concentrations (from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentrationalso shows the highest values of all thermodynamic parameters.Metakaolin, obtained by calcination of kaolin at 750 °C, was used as the starting material.The samples were characterized by X-ray diffraction (XRD),FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentra-tions of activators do not notably change the Si/Al ratio.",
publisher = "Society of Chemists and Technologists of Macedonia",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers",
pages = "99",
volume = "40",
number = "1",
doi = "10.20450/mjcce.2021.2127",
url = "https://hdl.handle.net/21.15107/rcub_dais_11800"
}
Ivanović, M., Nenadović, S., Pavlović, V. P., Radović, I., Kijevčanin, M., Pavlović, V. B.,& Kljajević, L.. (2021). The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering
Society of Chemists and Technologists of Macedonia., 40(1), 99.
https://doi.org/10.20450/mjcce.2021.2127
https://hdl.handle.net/21.15107/rcub_dais_11800
Ivanović M, Nenadović S, Pavlović VP, Radović I, Kijevčanin M, Pavlović VB, Kljajević L. The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering. 2021;40(1):99.
doi:10.20450/mjcce.2021.2127
https://hdl.handle.net/21.15107/rcub_dais_11800 .
Ivanović, Marija, Nenadović, Snežana, Pavlović, Vera P., Radović, Ivona, Kijevčanin, Mirjana, Pavlović, Vladimir B., Kljajević, Ljiljana, "The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers" in Macedonian Journal of Chemistry and Chemical Engineering, 40, no. 1 (2021):99,
https://doi.org/10.20450/mjcce.2021.2127 .,
https://hdl.handle.net/21.15107/rcub_dais_11800 .
1
1
1

Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent

Perendija, Jovana; Veličković, Zlate; Dražević, Ljubinka; Stojiljković, Ivana N.; Milčić, Miloš K.; Milosavljević, Milutin M.; Marinković, Aleksandar; Pavlović, Vladimir B.

(Association for ETRAN Society, 2021)

TY  - JOUR
AU  - Perendija, Jovana
AU  - Veličković, Zlate
AU  - Dražević, Ljubinka
AU  - Stojiljković, Ivana N.
AU  - Milčić, Miloš K.
AU  - Milosavljević, Milutin M.
AU  - Marinković, Aleksandar
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11948
AB  - Magnetite (MG) modified cellulose membrane (Cell-MG), obtained by reaction of 3-aminosilane and subsequently with diethylenetriaminepentaacetic acid dianhydride functionalized waste Cell fibers (Cell-NH2 and Cell-DTPA, respectively), and amino-modified diatomite was used for Azoxystrobin and Iprodione removal from water. Cell-MG membrane was structurally and morphologically characterized using FT-IR and FE-SEM techniques. The influences of operational parameters, i.e. pH, contact time, temperature, and the mass of adsorbent on adsorption and kinetics were studied in a batch system. The calculated capacities of 35.32 and 30.16 mg g-1 for Azoxystrobin and Iprodione, respectively, were obtained from non-linear Langmuir model fitting. Weber-Morris model fitting indicates the main contribution of intra-particle diffusion to overall mass transport resistance. Thermodynamic data indicate spontaneous and endothermic adsorption. The reusability of adsorbent and results from wastewater purification showed that Cell-MG could be used as general-purpose adsorbent. The adsorbent/adsorbate surface interaction was considered from the results obtained using density functional theory (DFT) and calculation of molecular electrostatic potential (MEP). Thus, a better understanding of the relation between the adsorption performances and contribution of non-specific and specific interactions to adsorption performances and design of novel adsorbent with improved properties was deduced
PB  - Association for ETRAN Society
T2  - Science of Sintering
T1  - Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent
SP  - 355
EP  - 378
VL  - 53
IS  - 3
DO  - 10.2298/SOS2103355P
UR  - https://hdl.handle.net/21.15107/rcub_dais_11948
ER  - 
@article{
author = "Perendija, Jovana and Veličković, Zlate and Dražević, Ljubinka and Stojiljković, Ivana N. and Milčić, Miloš K. and Milosavljević, Milutin M. and Marinković, Aleksandar and Pavlović, Vladimir B.",
year = "2021",
abstract = "Magnetite (MG) modified cellulose membrane (Cell-MG), obtained by reaction of 3-aminosilane and subsequently with diethylenetriaminepentaacetic acid dianhydride functionalized waste Cell fibers (Cell-NH2 and Cell-DTPA, respectively), and amino-modified diatomite was used for Azoxystrobin and Iprodione removal from water. Cell-MG membrane was structurally and morphologically characterized using FT-IR and FE-SEM techniques. The influences of operational parameters, i.e. pH, contact time, temperature, and the mass of adsorbent on adsorption and kinetics were studied in a batch system. The calculated capacities of 35.32 and 30.16 mg g-1 for Azoxystrobin and Iprodione, respectively, were obtained from non-linear Langmuir model fitting. Weber-Morris model fitting indicates the main contribution of intra-particle diffusion to overall mass transport resistance. Thermodynamic data indicate spontaneous and endothermic adsorption. The reusability of adsorbent and results from wastewater purification showed that Cell-MG could be used as general-purpose adsorbent. The adsorbent/adsorbate surface interaction was considered from the results obtained using density functional theory (DFT) and calculation of molecular electrostatic potential (MEP). Thus, a better understanding of the relation between the adsorption performances and contribution of non-specific and specific interactions to adsorption performances and design of novel adsorbent with improved properties was deduced",
publisher = "Association for ETRAN Society",
journal = "Science of Sintering",
title = "Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent",
pages = "355-378",
volume = "53",
number = "3",
doi = "10.2298/SOS2103355P",
url = "https://hdl.handle.net/21.15107/rcub_dais_11948"
}
Perendija, J., Veličković, Z., Dražević, L., Stojiljković, I. N., Milčić, M. K., Milosavljević, M. M., Marinković, A.,& Pavlović, V. B.. (2021). Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent. in Science of Sintering
Association for ETRAN Society., 53(3), 355-378.
https://doi.org/10.2298/SOS2103355P
https://hdl.handle.net/21.15107/rcub_dais_11948
Perendija J, Veličković Z, Dražević L, Stojiljković IN, Milčić MK, Milosavljević MM, Marinković A, Pavlović VB. Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent. in Science of Sintering. 2021;53(3):355-378.
doi:10.2298/SOS2103355P
https://hdl.handle.net/21.15107/rcub_dais_11948 .
Perendija, Jovana, Veličković, Zlate, Dražević, Ljubinka, Stojiljković, Ivana N., Milčić, Miloš K., Milosavljević, Milutin M., Marinković, Aleksandar, Pavlović, Vladimir B., "Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent" in Science of Sintering, 53, no. 3 (2021):355-378,
https://doi.org/10.2298/SOS2103355P .,
https://hdl.handle.net/21.15107/rcub_dais_11948 .
2
2

Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance

Nikolić, Maria Vesna; Labus, Nebojša; Pavlović, Vera P.; Marković, Smilja; Luković, Miloljub D.; Tadić, Nenad B.; Vujančević, Jelena; Vlahović, Branislav; Pavlović, Vladimir B.

(Springer, 2021)

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša
AU  - Pavlović, Vera P.
AU  - Marković, Smilja
AU  - Luković, Miloljub D.
AU  - Tadić, Nenad B.
AU  - Vujančević, Jelena
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11954
AB  - Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30–90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 °C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 °C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process
PB  - Springer
T2  - Journal of Electroceramics
T1  - Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance
SP  - 135
EP  - 147
VL  - 45
DO  - 10.1007/s10832-021-00232-z
UR  - https://hdl.handle.net/21.15107/rcub_dais_11954
ER  - 
@article{
author = "Nikolić, Maria Vesna and Labus, Nebojša and Pavlović, Vera P. and Marković, Smilja and Luković, Miloljub D. and Tadić, Nenad B. and Vujančević, Jelena and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2021",
abstract = "Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30–90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 °C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 °C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process",
publisher = "Springer",
journal = "Journal of Electroceramics",
title = "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance",
pages = "135-147",
volume = "45",
doi = "10.1007/s10832-021-00232-z",
url = "https://hdl.handle.net/21.15107/rcub_dais_11954"
}
Nikolić, M. V., Labus, N., Pavlović, V. P., Marković, S., Luković, M. D., Tadić, N. B., Vujančević, J., Vlahović, B.,& Pavlović, V. B.. (2021). Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics
Springer., 45, 135-147.
https://doi.org/10.1007/s10832-021-00232-z
https://hdl.handle.net/21.15107/rcub_dais_11954
Nikolić MV, Labus N, Pavlović VP, Marković S, Luković MD, Tadić NB, Vujančević J, Vlahović B, Pavlović VB. Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics. 2021;45:135-147.
doi:10.1007/s10832-021-00232-z
https://hdl.handle.net/21.15107/rcub_dais_11954 .
Nikolić, Maria Vesna, Labus, Nebojša, Pavlović, Vera P., Marković, Smilja, Luković, Miloljub D., Tadić, Nenad B., Vujančević, Jelena, Vlahović, Branislav, Pavlović, Vladimir B., "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance" in Journal of Electroceramics, 45 (2021):135-147,
https://doi.org/10.1007/s10832-021-00232-z .,
https://hdl.handle.net/21.15107/rcub_dais_11954 .
1
1

The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods

Šuljagić, Marija; Vulić, Predrag; Jeremić, Dejan; Pavlović, Vladimir B.; Filipović, Suzana; Kilanski, Lukasz; Lewinska, Sabina; Slawska-Waniewska, Anna; Milenković, Milica; Nikolić, Aleksandar S.; Anđelković, Ljubica

(Elsevier, 2021)

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Vulić, Predrag
AU  - Jeremić, Dejan
AU  - Pavlović, Vladimir B.
AU  - Filipović, Suzana
AU  - Kilanski, Lukasz
AU  - Lewinska, Sabina
AU  - Slawska-Waniewska, Anna
AU  - Milenković, Milica
AU  - Nikolić, Aleksandar S.
AU  - Anđelković, Ljubica
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/9515
AB  - To investigate the magnetic behavior of starch-coated cobalt ferrites, well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted coprecipitation, microemulsion, and microwave-assisted hydrothermal syntheses were chosen for their preparation. The obtained materials had pure single-phase spinel structures. Scanning and transmission electron microscopy analyses revealed that the morphology of the samples is not uniform, and particle aggregation is a dominant process. Fourier transform infrared spectra and thermogravimetric analysis confirmed the presence of starch in all–coated samples. The unusually higher saturation magnetization of starch-coated samples than their as-prepared analogs, obtained by coprecipitation, ultrasonically assisted coprecipitation, and microwave-assisted hydrothermal methods, might be explained by the Ostwald ripening mechanism induced by the coating process. A decrease in magnetization was noticed for the starch-functionalized nanomaterials synthesized by mechanochemical and microemulsion methods, in comparison to their as-prepared analogs, i.e., the size distribution of such nanoparticles is narrow, and the average diameter of the grains is near critical for the Ostwald ripening process.
PB  - Elsevier
T2  - Materials Research Bulletin
T1  - The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods
SP  - 111117
VL  - 134
DO  - 10.1016/j.materresbull.2020.111117
UR  - https://hdl.handle.net/21.15107/rcub_dais_9515
ER  - 
@article{
author = "Šuljagić, Marija and Vulić, Predrag and Jeremić, Dejan and Pavlović, Vladimir B. and Filipović, Suzana and Kilanski, Lukasz and Lewinska, Sabina and Slawska-Waniewska, Anna and Milenković, Milica and Nikolić, Aleksandar S. and Anđelković, Ljubica",
year = "2021",
abstract = "To investigate the magnetic behavior of starch-coated cobalt ferrites, well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted coprecipitation, microemulsion, and microwave-assisted hydrothermal syntheses were chosen for their preparation. The obtained materials had pure single-phase spinel structures. Scanning and transmission electron microscopy analyses revealed that the morphology of the samples is not uniform, and particle aggregation is a dominant process. Fourier transform infrared spectra and thermogravimetric analysis confirmed the presence of starch in all–coated samples. The unusually higher saturation magnetization of starch-coated samples than their as-prepared analogs, obtained by coprecipitation, ultrasonically assisted coprecipitation, and microwave-assisted hydrothermal methods, might be explained by the Ostwald ripening mechanism induced by the coating process. A decrease in magnetization was noticed for the starch-functionalized nanomaterials synthesized by mechanochemical and microemulsion methods, in comparison to their as-prepared analogs, i.e., the size distribution of such nanoparticles is narrow, and the average diameter of the grains is near critical for the Ostwald ripening process.",
publisher = "Elsevier",
journal = "Materials Research Bulletin",
title = "The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods",
pages = "111117",
volume = "134",
doi = "10.1016/j.materresbull.2020.111117",
url = "https://hdl.handle.net/21.15107/rcub_dais_9515"
}
Šuljagić, M., Vulić, P., Jeremić, D., Pavlović, V. B., Filipović, S., Kilanski, L., Lewinska, S., Slawska-Waniewska, A., Milenković, M., Nikolić, A. S.,& Anđelković, L.. (2021). The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods. in Materials Research Bulletin
Elsevier., 134, 111117.
https://doi.org/10.1016/j.materresbull.2020.111117
https://hdl.handle.net/21.15107/rcub_dais_9515
Šuljagić M, Vulić P, Jeremić D, Pavlović VB, Filipović S, Kilanski L, Lewinska S, Slawska-Waniewska A, Milenković M, Nikolić AS, Anđelković L. The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods. in Materials Research Bulletin. 2021;134:111117.
doi:10.1016/j.materresbull.2020.111117
https://hdl.handle.net/21.15107/rcub_dais_9515 .
Šuljagić, Marija, Vulić, Predrag, Jeremić, Dejan, Pavlović, Vladimir B., Filipović, Suzana, Kilanski, Lukasz, Lewinska, Sabina, Slawska-Waniewska, Anna, Milenković, Milica, Nikolić, Aleksandar S., Anđelković, Ljubica, "The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods" in Materials Research Bulletin, 134 (2021):111117,
https://doi.org/10.1016/j.materresbull.2020.111117 .,
https://hdl.handle.net/21.15107/rcub_dais_9515 .
8
5
7

The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods

Šuljagić, Marija; Vulić, Predrag; Jeremić, Dejan; Pavlović, Vladimir B.; Filipović, Suzana; Kilanski, Lukasz; Lewinska, Sabina; Slawska-Waniewska, Anna; Milenković, Milica; Nikolić, Aleksandar S.; Anđelković, Ljubica

(Elsevier, 2021)

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Vulić, Predrag
AU  - Jeremić, Dejan
AU  - Pavlović, Vladimir B.
AU  - Filipović, Suzana
AU  - Kilanski, Lukasz
AU  - Lewinska, Sabina
AU  - Slawska-Waniewska, Anna
AU  - Milenković, Milica
AU  - Nikolić, Aleksandar S.
AU  - Anđelković, Ljubica
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/9514
AB  - To investigate the magnetic behavior of starch-coated cobalt ferrites, well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted coprecipitation, microemulsion, and microwave-assisted hydrothermal syntheses were chosen for their preparation. The obtained materials had pure single-phase spinel structures. Scanning and transmission electron microscopy analyses revealed that the morphology of the samples is not uniform, and particle aggregation is a dominant process. Fourier transform infrared spectra and thermogravimetric analysis confirmed the presence of starch in all–coated samples. The unusually higher saturation magnetization of starch-coated samples than their as-prepared analogs, obtained by coprecipitation, ultrasonically assisted coprecipitation, and microwave-assisted hydrothermal methods, might be explained by the Ostwald ripening mechanism induced by the coating process. A decrease in magnetization was noticed for the starch-functionalized nanomaterials synthesized by mechanochemical and microemulsion methods, in comparison to their as-prepared analogs, i.e., the size distribution of such nanoparticles is narrow, and the average diameter of the grains is near critical for the Ostwald ripening process.
PB  - Elsevier
T2  - Materials Research Bulletin
T1  - The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods
SP  - 111117
VL  - 134
DO  - 10.1016/j.materresbull.2020.111117
UR  - https://hdl.handle.net/21.15107/rcub_dais_9514
ER  - 
@article{
author = "Šuljagić, Marija and Vulić, Predrag and Jeremić, Dejan and Pavlović, Vladimir B. and Filipović, Suzana and Kilanski, Lukasz and Lewinska, Sabina and Slawska-Waniewska, Anna and Milenković, Milica and Nikolić, Aleksandar S. and Anđelković, Ljubica",
year = "2021",
abstract = "To investigate the magnetic behavior of starch-coated cobalt ferrites, well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted coprecipitation, microemulsion, and microwave-assisted hydrothermal syntheses were chosen for their preparation. The obtained materials had pure single-phase spinel structures. Scanning and transmission electron microscopy analyses revealed that the morphology of the samples is not uniform, and particle aggregation is a dominant process. Fourier transform infrared spectra and thermogravimetric analysis confirmed the presence of starch in all–coated samples. The unusually higher saturation magnetization of starch-coated samples than their as-prepared analogs, obtained by coprecipitation, ultrasonically assisted coprecipitation, and microwave-assisted hydrothermal methods, might be explained by the Ostwald ripening mechanism induced by the coating process. A decrease in magnetization was noticed for the starch-functionalized nanomaterials synthesized by mechanochemical and microemulsion methods, in comparison to their as-prepared analogs, i.e., the size distribution of such nanoparticles is narrow, and the average diameter of the grains is near critical for the Ostwald ripening process.",
publisher = "Elsevier",
journal = "Materials Research Bulletin",
title = "The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods",
pages = "111117",
volume = "134",
doi = "10.1016/j.materresbull.2020.111117",
url = "https://hdl.handle.net/21.15107/rcub_dais_9514"
}
Šuljagić, M., Vulić, P., Jeremić, D., Pavlović, V. B., Filipović, S., Kilanski, L., Lewinska, S., Slawska-Waniewska, A., Milenković, M., Nikolić, A. S.,& Anđelković, L.. (2021). The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods. in Materials Research Bulletin
Elsevier., 134, 111117.
https://doi.org/10.1016/j.materresbull.2020.111117
https://hdl.handle.net/21.15107/rcub_dais_9514
Šuljagić M, Vulić P, Jeremić D, Pavlović VB, Filipović S, Kilanski L, Lewinska S, Slawska-Waniewska A, Milenković M, Nikolić AS, Anđelković L. The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods. in Materials Research Bulletin. 2021;134:111117.
doi:10.1016/j.materresbull.2020.111117
https://hdl.handle.net/21.15107/rcub_dais_9514 .
Šuljagić, Marija, Vulić, Predrag, Jeremić, Dejan, Pavlović, Vladimir B., Filipović, Suzana, Kilanski, Lukasz, Lewinska, Sabina, Slawska-Waniewska, Anna, Milenković, Milica, Nikolić, Aleksandar S., Anđelković, Ljubica, "The influence of the starch coating on the magnetic properties of nanosized cobalt ferrites obtained by different synthetic methods" in Materials Research Bulletin, 134 (2021):111117,
https://doi.org/10.1016/j.materresbull.2020.111117 .,
https://hdl.handle.net/21.15107/rcub_dais_9514 .
8
5
7

Photoactivity of vanadium oxide TiO2 nanotubes

Vujančević, Jelena; Blagojević, Vladimir; Andričević, Pavao; Pavlović, Vera P.; Horváth, Endre; Forró, László; Vlahović, Branislav; Pavlović, Vladimir B.; Janaćković, Đorđe

(Novi Sad : Faculty of Technology, 2021)

TY  - CONF
AU  - Vujančević, Jelena
AU  - Blagojević, Vladimir
AU  - Andričević, Pavao
AU  - Pavlović, Vera P.
AU  - Horváth, Endre
AU  - Forró, László
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12398
AB  - The aim of this study was to investigate the influence of vanadium oxide photosensitive surface layer on the photoactivity of TiO2 nanotubes. Nanotube arrays were synthesized by anodization of titanium foil at different voltages, and vanadium-oxide was deposited by wet chemical deposition. Deposition of the vanadium-oxide layer was confirmed by XPS analysis, which provided the chemical composition of the sample surface. Photovoltaic characteristics and photocatalytic performance for photodegradation of methyl orange dye of modified TiO2 nanotubes were correlated with the nanotube morphology (and anodization voltage). Optimal anodization voltage was determined, in conjunction with the deposition of the surface vanadium oxide layer, in order to achieve maximum performance of the modified TiO2 electrodes. This has been correlated with changes in the optical properties of the TiO2 electrodes, the nanotube length and diameter, as they occur with the change in the anodization voltage, as well as the changes in the vanadium-oxide content in the samples, where the vanadium-oxide content was found to be determined by the nanotube morphology. The photovoltaic performance of the optimized modified TiO2 electrode with the surface vanadium-oxide layer was found to be significantly better than both the performance of the corresponding TiO2 electrode, and the performance of all the other TiO2 electrodes included in the study.
PB  - Novi Sad : Faculty of Technology
C3  - Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad
T1  - Photoactivity of vanadium oxide TiO2 nanotubes
SP  - 92
EP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_dais_12398
ER  - 
@conference{
author = "Vujančević, Jelena and Blagojević, Vladimir and Andričević, Pavao and Pavlović, Vera P. and Horváth, Endre and Forró, László and Vlahović, Branislav and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2021",
abstract = "The aim of this study was to investigate the influence of vanadium oxide photosensitive surface layer on the photoactivity of TiO2 nanotubes. Nanotube arrays were synthesized by anodization of titanium foil at different voltages, and vanadium-oxide was deposited by wet chemical deposition. Deposition of the vanadium-oxide layer was confirmed by XPS analysis, which provided the chemical composition of the sample surface. Photovoltaic characteristics and photocatalytic performance for photodegradation of methyl orange dye of modified TiO2 nanotubes were correlated with the nanotube morphology (and anodization voltage). Optimal anodization voltage was determined, in conjunction with the deposition of the surface vanadium oxide layer, in order to achieve maximum performance of the modified TiO2 electrodes. This has been correlated with changes in the optical properties of the TiO2 electrodes, the nanotube length and diameter, as they occur with the change in the anodization voltage, as well as the changes in the vanadium-oxide content in the samples, where the vanadium-oxide content was found to be determined by the nanotube morphology. The photovoltaic performance of the optimized modified TiO2 electrode with the surface vanadium-oxide layer was found to be significantly better than both the performance of the corresponding TiO2 electrode, and the performance of all the other TiO2 electrodes included in the study.",
publisher = "Novi Sad : Faculty of Technology",
journal = "Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad",
title = "Photoactivity of vanadium oxide TiO2 nanotubes",
pages = "92-92",
url = "https://hdl.handle.net/21.15107/rcub_dais_12398"
}
Vujančević, J., Blagojević, V., Andričević, P., Pavlović, V. P., Horváth, E., Forró, L., Vlahović, B., Pavlović, V. B.,& Janaćković, Đ.. (2021). Photoactivity of vanadium oxide TiO2 nanotubes. in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad
Novi Sad : Faculty of Technology., 92-92.
https://hdl.handle.net/21.15107/rcub_dais_12398
Vujančević J, Blagojević V, Andričević P, Pavlović VP, Horváth E, Forró L, Vlahović B, Pavlović VB, Janaćković Đ. Photoactivity of vanadium oxide TiO2 nanotubes. in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad. 2021;:92-92.
https://hdl.handle.net/21.15107/rcub_dais_12398 .
Vujančević, Jelena, Blagojević, Vladimir, Andričević, Pavao, Pavlović, Vera P., Horváth, Endre, Forró, László, Vlahović, Branislav, Pavlović, Vladimir B., Janaćković, Đorđe, "Photoactivity of vanadium oxide TiO2 nanotubes" in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad (2021):92-92,
https://hdl.handle.net/21.15107/rcub_dais_12398 .

Dielectric characteristics of polymer nanocomposites based on PVDF and mechanically activated ZnO powder

Peleš Tadić, Adriana; Obradović, Nina; Kosanović, Darko; Petrović, J.; Blagojević, Vladimir A.; Đorđević, Antonije; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2021)

TY  - CONF
AU  - Peleš Tadić, Adriana
AU  - Obradović, Nina
AU  - Kosanović, Darko
AU  - Petrović, J.
AU  - Blagojević, Vladimir A.
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11903
AB  - ZnO powder was mechanically activated for 10 and 30 minutes in a high energy planetary ball mill, and mixed with 2 wt% PVDF solution to obtain nanocomposite films (50 μm) by casting. ZnO powder activated for 10 and 30 minutes was used as filler. The difference in the dielectric properties for composites with the powder with prolonged time of mechanical activation was investigated, as well as the influence of ageing using dielectric measurements at higher frequencies. Dielectric measurement showed that the ageing process does not significantly affect the properties of the composites, while the prolonged activation times can be correlated with the changes in the values of the dielectric constant. The introduction of mechanically activated ZnO powders into the matrix leads to an increase in the dielectric permittivity of the polymer. Values of dielectric permittivity for different frequencies at 300 K decrease from approximately 3.1 (60 Hz) to 1.8 (30 MHz) for nanocomposite with ZnO activated for 10 minutes, while the permittivity for nanocopomosite with ZnO activated for 30 minutes permittivity was 2.6.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Dielectric characteristics of polymer nanocomposites based on PVDF and mechanically activated ZnO powder
SP  - 57
EP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_dais_11903
ER  - 
@conference{
author = "Peleš Tadić, Adriana and Obradović, Nina and Kosanović, Darko and Petrović, J. and Blagojević, Vladimir A. and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2021",
abstract = "ZnO powder was mechanically activated for 10 and 30 minutes in a high energy planetary ball mill, and mixed with 2 wt% PVDF solution to obtain nanocomposite films (50 μm) by casting. ZnO powder activated for 10 and 30 minutes was used as filler. The difference in the dielectric properties for composites with the powder with prolonged time of mechanical activation was investigated, as well as the influence of ageing using dielectric measurements at higher frequencies. Dielectric measurement showed that the ageing process does not significantly affect the properties of the composites, while the prolonged activation times can be correlated with the changes in the values of the dielectric constant. The introduction of mechanically activated ZnO powders into the matrix leads to an increase in the dielectric permittivity of the polymer. Values of dielectric permittivity for different frequencies at 300 K decrease from approximately 3.1 (60 Hz) to 1.8 (30 MHz) for nanocomposite with ZnO activated for 10 minutes, while the permittivity for nanocopomosite with ZnO activated for 30 minutes permittivity was 2.6.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Dielectric characteristics of polymer nanocomposites based on PVDF and mechanically activated ZnO powder",
pages = "57-57",
url = "https://hdl.handle.net/21.15107/rcub_dais_11903"
}
Peleš Tadić, A., Obradović, N., Kosanović, D., Petrović, J., Blagojević, V. A., Đorđević, A.,& Pavlović, V. B.. (2021). Dielectric characteristics of polymer nanocomposites based on PVDF and mechanically activated ZnO powder. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 57-57.
https://hdl.handle.net/21.15107/rcub_dais_11903
Peleš Tadić A, Obradović N, Kosanović D, Petrović J, Blagojević VA, Đorđević A, Pavlović VB. Dielectric characteristics of polymer nanocomposites based on PVDF and mechanically activated ZnO powder. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:57-57.
https://hdl.handle.net/21.15107/rcub_dais_11903 .
Peleš Tadić, Adriana, Obradović, Nina, Kosanović, Darko, Petrović, J., Blagojević, Vladimir A., Đorđević, Antonije, Pavlović, Vladimir B., "Dielectric characteristics of polymer nanocomposites based on PVDF and mechanically activated ZnO powder" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):57-57,
https://hdl.handle.net/21.15107/rcub_dais_11903 .

Electronic Properties of BZT Nano-Ceramic Grades at Low Frequency Region

Kosanović, Darko; Pucky, Viktor; Aleksić, Stanko O.; Pavlović, Vladimir B.; Blagojević, Vladimir A.

(Belgrade : Serbian Ceramic Society, 2021)

TY  - CONF
AU  - Kosanović, Darko
AU  - Pucky, Viktor
AU  - Aleksić, Stanko O.
AU  - Pavlović, Vladimir B.
AU  - Blagojević, Vladimir A.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11913
AB  - Barium zirconium titanate ceramics were prepared using solid state reactions of BaCO3, TiO2 and ZrO2 at elevated temperatures. The prepared BZT was mechanically activated in the planetary ball mill from 0-120 min to achieve different powder grades from micro- to nanosized particles. After the powder characterization by XRD and SEM the samples were pressed in disc shape and sintered at 1100 and 1200 °C in the air. The sintered samples were characterized by SEM. After that the silver epoxy electrodes were deposited on sintered disc samples. The disc samples capacitance and resistivity were measured in the low frequency region from 1 Hz to 200 kHz using a low frequency impedance analyzer. Sintering temperatures and powder grades were used as parameters. Finally, specific resistance ρ, dielectric permittivity (ε' + jε") and tgδ were obtained from the impedance measurements. The trends in electronic properties were analyzed: the relaxation effect of the space charge (inter-granular electric charges) vs. sintering temperature and ceramic grades. These show that mechanical activation has a significant effect on electrical properties, resulting in generally improved overall performance.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Electronic Properties of BZT Nano-Ceramic Grades at Low Frequency Region
SP  - 34
EP  - 34
UR  - https://hdl.handle.net/21.15107/rcub_dais_11913
ER  - 
@conference{
author = "Kosanović, Darko and Pucky, Viktor and Aleksić, Stanko O. and Pavlović, Vladimir B. and Blagojević, Vladimir A.",
year = "2021",
abstract = "Barium zirconium titanate ceramics were prepared using solid state reactions of BaCO3, TiO2 and ZrO2 at elevated temperatures. The prepared BZT was mechanically activated in the planetary ball mill from 0-120 min to achieve different powder grades from micro- to nanosized particles. After the powder characterization by XRD and SEM the samples were pressed in disc shape and sintered at 1100 and 1200 °C in the air. The sintered samples were characterized by SEM. After that the silver epoxy electrodes were deposited on sintered disc samples. The disc samples capacitance and resistivity were measured in the low frequency region from 1 Hz to 200 kHz using a low frequency impedance analyzer. Sintering temperatures and powder grades were used as parameters. Finally, specific resistance ρ, dielectric permittivity (ε' + jε") and tgδ were obtained from the impedance measurements. The trends in electronic properties were analyzed: the relaxation effect of the space charge (inter-granular electric charges) vs. sintering temperature and ceramic grades. These show that mechanical activation has a significant effect on electrical properties, resulting in generally improved overall performance.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Electronic Properties of BZT Nano-Ceramic Grades at Low Frequency Region",
pages = "34-34",
url = "https://hdl.handle.net/21.15107/rcub_dais_11913"
}
Kosanović, D., Pucky, V., Aleksić, S. O., Pavlović, V. B.,& Blagojević, V. A.. (2021). Electronic Properties of BZT Nano-Ceramic Grades at Low Frequency Region. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 34-34.
https://hdl.handle.net/21.15107/rcub_dais_11913
Kosanović D, Pucky V, Aleksić SO, Pavlović VB, Blagojević VA. Electronic Properties of BZT Nano-Ceramic Grades at Low Frequency Region. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:34-34.
https://hdl.handle.net/21.15107/rcub_dais_11913 .
Kosanović, Darko, Pucky, Viktor, Aleksić, Stanko O., Pavlović, Vladimir B., Blagojević, Vladimir A., "Electronic Properties of BZT Nano-Ceramic Grades at Low Frequency Region" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):34-34,
https://hdl.handle.net/21.15107/rcub_dais_11913 .