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)

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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) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200135 (Univerzitet u Beogradu, Tehnološko-metalurški fakultet) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200135 (Универзитет у Београду, Технолошко-металуршки факултет) (sr)
Authors

Publications

Polypyrrole on graphite: An exemplary model system for comprehensive electrochemical analysis of energy storage materials

Popović, Aleksandra S.; Gvozdenović, Milica M.; Janković, Ana; Jugović, Branimir; Grgur, Branimir

(Elsevier BV, 2023)

TY  - JOUR
AU  - Popović, Aleksandra S.
AU  - Gvozdenović, Milica M.
AU  - Janković, Ana
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14707
AB  - Electrochemical Energy Storage (EES) technologies are playing a significant role in the aspirations to decrease the usage of fossil fuels and move toward an environmentally conscious society. Due to the importance of EES technologies, more researchers are looking for an efficient and effective electrode material, which is the most important part of the EES system that possibly could result in much-needed advancements in the field. However, incoming researchers have a diverse backgrounds and as newcomers to the electrochemical community, they sometimes lack familiarity with the core concepts, well-established procedures, and methodologies that define the standards of the discipline. This issue's importance has been acknowledged, and various publications have been written to guide researchers in doing accurate evaluations. However, to the best of our knowledge, even though these publications demonstrate the methodologies and procedures for approaching the existing challenges none of them address the offered topic with an actual example. To address this gap, we present a step-by-step procedure for the electrochemical analysis of polypyrrole, a widely utilized conducting polymer with significant potential as an electrode material for supercapacitors and batteries.
PB  - Elsevier BV
T2  - Synthetic Metals
T1  - Polypyrrole on graphite: An exemplary model system for comprehensive electrochemical analysis of energy storage materials
SP  - 117386
VL  - 297
DO  - 10.1016/j.synthmet.2023.117386
UR  - https://hdl.handle.net/21.15107/rcub_dais_14707
ER  - 
@article{
author = "Popović, Aleksandra S. and Gvozdenović, Milica M. and Janković, Ana and Jugović, Branimir and Grgur, Branimir",
year = "2023",
abstract = "Electrochemical Energy Storage (EES) technologies are playing a significant role in the aspirations to decrease the usage of fossil fuels and move toward an environmentally conscious society. Due to the importance of EES technologies, more researchers are looking for an efficient and effective electrode material, which is the most important part of the EES system that possibly could result in much-needed advancements in the field. However, incoming researchers have a diverse backgrounds and as newcomers to the electrochemical community, they sometimes lack familiarity with the core concepts, well-established procedures, and methodologies that define the standards of the discipline. This issue's importance has been acknowledged, and various publications have been written to guide researchers in doing accurate evaluations. However, to the best of our knowledge, even though these publications demonstrate the methodologies and procedures for approaching the existing challenges none of them address the offered topic with an actual example. To address this gap, we present a step-by-step procedure for the electrochemical analysis of polypyrrole, a widely utilized conducting polymer with significant potential as an electrode material for supercapacitors and batteries.",
publisher = "Elsevier BV",
journal = "Synthetic Metals",
title = "Polypyrrole on graphite: An exemplary model system for comprehensive electrochemical analysis of energy storage materials",
pages = "117386",
volume = "297",
doi = "10.1016/j.synthmet.2023.117386",
url = "https://hdl.handle.net/21.15107/rcub_dais_14707"
}
Popović, A. S., Gvozdenović, M. M., Janković, A., Jugović, B.,& Grgur, B.. (2023). Polypyrrole on graphite: An exemplary model system for comprehensive electrochemical analysis of energy storage materials. in Synthetic Metals
Elsevier BV., 297, 117386.
https://doi.org/10.1016/j.synthmet.2023.117386
https://hdl.handle.net/21.15107/rcub_dais_14707
Popović AS, Gvozdenović MM, Janković A, Jugović B, Grgur B. Polypyrrole on graphite: An exemplary model system for comprehensive electrochemical analysis of energy storage materials. in Synthetic Metals. 2023;297:117386.
doi:10.1016/j.synthmet.2023.117386
https://hdl.handle.net/21.15107/rcub_dais_14707 .
Popović, Aleksandra S., Gvozdenović, Milica M., Janković, Ana, Jugović, Branimir, Grgur, Branimir, "Polypyrrole on graphite: An exemplary model system for comprehensive electrochemical analysis of energy storage materials" in Synthetic Metals, 297 (2023):117386,
https://doi.org/10.1016/j.synthmet.2023.117386 .,
https://hdl.handle.net/21.15107/rcub_dais_14707 .
2
2

Nanomechanical properties of PVDF–ZnO polymer nanocomposite

Peleš Tadić, Adriana; Blagojević, Vladimir A.; Stojanović, Dušica; Ostojić, Sanja B.; Tasić, Nikola; Kosanović, Darko; Uskoković, Petar; Pavlović, Vladimir B.

(Elsevier BV, 2023)

TY  - JOUR
AU  - Peleš Tadić, Adriana
AU  - Blagojević, Vladimir A.
AU  - Stojanović, Dušica
AU  - Ostojić, Sanja B.
AU  - Tasić, Nikola
AU  - Kosanović, Darko
AU  - Uskoković, Petar
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/13436
AB  - Poly(vinylidenefluoride)–ZnO (PVDF–ZnO) nanocomposites with mechanically activated ZnO nanoparticle fillers were investigated using thermal and mechanical analysis and AFM and PFM. Differential scanning calorimetry (DSC) investigated the effect of ZnO nanoparticles on the crystallinity of the polymer, under controlled heating and cooling. Atomic force (AFM) microscopy was used to record the surfaces of the samples. Nanocomposite surface roughness shows the presence of the different phases inside of the matrix, where rough samples contain a higher proportion of the β phase. PFM was performed to investigate the piezoresponse of the composites. Nanoidentation showed that the mechanical activation of the filler (ZnO) increases the Young modulus with the activation time. Molecular simulations in periodic systems (PVDF–ZnO spherical nanocluster and nanocylinder composite) were used to investigate the influence of particle size and shape on the Young modulus of different phases of PVDF.
PB  - Elsevier BV
T2  - Materials Science and Engineering: B
T1  - Nanomechanical properties of PVDF–ZnO polymer nanocomposite
SP  - 116126
VL  - 287
DO  - 10.1016/j.mseb.2022.116126
UR  - https://hdl.handle.net/21.15107/rcub_dais_13436
ER  - 
@article{
author = "Peleš Tadić, Adriana and Blagojević, Vladimir A. and Stojanović, Dušica and Ostojić, Sanja B. and Tasić, Nikola and Kosanović, Darko and Uskoković, Petar and Pavlović, Vladimir B.",
year = "2023",
abstract = "Poly(vinylidenefluoride)–ZnO (PVDF–ZnO) nanocomposites with mechanically activated ZnO nanoparticle fillers were investigated using thermal and mechanical analysis and AFM and PFM. Differential scanning calorimetry (DSC) investigated the effect of ZnO nanoparticles on the crystallinity of the polymer, under controlled heating and cooling. Atomic force (AFM) microscopy was used to record the surfaces of the samples. Nanocomposite surface roughness shows the presence of the different phases inside of the matrix, where rough samples contain a higher proportion of the β phase. PFM was performed to investigate the piezoresponse of the composites. Nanoidentation showed that the mechanical activation of the filler (ZnO) increases the Young modulus with the activation time. Molecular simulations in periodic systems (PVDF–ZnO spherical nanocluster and nanocylinder composite) were used to investigate the influence of particle size and shape on the Young modulus of different phases of PVDF.",
publisher = "Elsevier BV",
journal = "Materials Science and Engineering: B",
title = "Nanomechanical properties of PVDF–ZnO polymer nanocomposite",
pages = "116126",
volume = "287",
doi = "10.1016/j.mseb.2022.116126",
url = "https://hdl.handle.net/21.15107/rcub_dais_13436"
}
Peleš Tadić, A., Blagojević, V. A., Stojanović, D., Ostojić, S. B., Tasić, N., Kosanović, D., Uskoković, P.,& Pavlović, V. B.. (2023). Nanomechanical properties of PVDF–ZnO polymer nanocomposite. in Materials Science and Engineering: B
Elsevier BV., 287, 116126.
https://doi.org/10.1016/j.mseb.2022.116126
https://hdl.handle.net/21.15107/rcub_dais_13436
Peleš Tadić A, Blagojević VA, Stojanović D, Ostojić SB, Tasić N, Kosanović D, Uskoković P, Pavlović VB. Nanomechanical properties of PVDF–ZnO polymer nanocomposite. in Materials Science and Engineering: B. 2023;287:116126.
doi:10.1016/j.mseb.2022.116126
https://hdl.handle.net/21.15107/rcub_dais_13436 .
Peleš Tadić, Adriana, Blagojević, Vladimir A., Stojanović, Dušica, Ostojić, Sanja B., Tasić, Nikola, Kosanović, Darko, Uskoković, Petar, Pavlović, Vladimir B., "Nanomechanical properties of PVDF–ZnO polymer nanocomposite" in Materials Science and Engineering: B, 287 (2023):116126,
https://doi.org/10.1016/j.mseb.2022.116126 .,
https://hdl.handle.net/21.15107/rcub_dais_13436 .
6
5

Effect of mechanical activation on carbothermal synthesis and densification of ZrC

Obradović, Nina; Feng, Lun; Filipović, Suzana; Mirković, Miljana; Kosanović, Darko; Rogan, Jelena; Fahrenholtz, William G.

(Elsevier BV, 2023)

TY  - JOUR
AU  - Obradović, Nina
AU  - Feng, Lun
AU  - Filipović, Suzana
AU  - Mirković, Miljana
AU  - Kosanović, Darko
AU  - Rogan, Jelena
AU  - Fahrenholtz, William G.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14877
AB  - Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.
PB  - Elsevier BV
T2  - Journal of the European Ceramic Society
T1  - Effect of mechanical activation on carbothermal synthesis and densification of ZrC
SP  - 7306
EP  - 7313
VL  - 43
DO  - 10.1016/j.jeurceramsoc.2023.08.007
UR  - https://hdl.handle.net/21.15107/rcub_dais_14877
ER  - 
@article{
author = "Obradović, Nina and Feng, Lun and Filipović, Suzana and Mirković, Miljana and Kosanović, Darko and Rogan, Jelena and Fahrenholtz, William G.",
year = "2023",
abstract = "Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.",
publisher = "Elsevier BV",
journal = "Journal of the European Ceramic Society",
title = "Effect of mechanical activation on carbothermal synthesis and densification of ZrC",
pages = "7306-7313",
volume = "43",
doi = "10.1016/j.jeurceramsoc.2023.08.007",
url = "https://hdl.handle.net/21.15107/rcub_dais_14877"
}
Obradović, N., Feng, L., Filipović, S., Mirković, M., Kosanović, D., Rogan, J.,& Fahrenholtz, W. G.. (2023). Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society
Elsevier BV., 43, 7306-7313.
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14877
Obradović N, Feng L, Filipović S, Mirković M, Kosanović D, Rogan J, Fahrenholtz WG. Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society. 2023;43:7306-7313.
doi:10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14877 .
Obradović, Nina, Feng, Lun, Filipović, Suzana, Mirković, Miljana, Kosanović, Darko, Rogan, Jelena, Fahrenholtz, William G., "Effect of mechanical activation on carbothermal synthesis and densification of ZrC" in Journal of the European Ceramic Society, 43 (2023):7306-7313,
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007 .,
https://hdl.handle.net/21.15107/rcub_dais_14877 .
1
1

The crystal growth of NASICON phase from the lithium germanium phosphate glass

Matijašević, Srđan D.; Topalović, Vladimir; Savić, Veljko; Labus, Nebojša; Nikolić, Jelena D.; Zildžović, Snežana; Grujić, Snežana

(Belgrade : ETRAN, 2023)

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Labus, Nebojša
AU  - Nikolić, Jelena D.
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14117
AB  - The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined experimentally and theoretically.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - The crystal growth of NASICON phase from the lithium germanium phosphate glass
SP  - 539
EP  - 547
VL  - 539
IS  - 4
DO  - 10.2298/SOS220809022M
UR  - https://hdl.handle.net/21.15107/rcub_dais_14117
ER  - 
@article{
author = "Matijašević, Srđan D. and Topalović, Vladimir and Savić, Veljko and Labus, Nebojša and Nikolić, Jelena D. and Zildžović, Snežana and Grujić, Snežana",
year = "2023",
abstract = "The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined experimentally and theoretically.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "The crystal growth of NASICON phase from the lithium germanium phosphate glass",
pages = "539-547",
volume = "539",
number = "4",
doi = "10.2298/SOS220809022M",
url = "https://hdl.handle.net/21.15107/rcub_dais_14117"
}
Matijašević, S. D., Topalović, V., Savić, V., Labus, N., Nikolić, J. D., Zildžović, S.,& Grujić, S.. (2023). The crystal growth of NASICON phase from the lithium germanium phosphate glass. in Science of Sintering
Belgrade : ETRAN., 539(4), 539-547.
https://doi.org/10.2298/SOS220809022M
https://hdl.handle.net/21.15107/rcub_dais_14117
Matijašević SD, Topalović V, Savić V, Labus N, Nikolić JD, Zildžović S, Grujić S. The crystal growth of NASICON phase from the lithium germanium phosphate glass. in Science of Sintering. 2023;539(4):539-547.
doi:10.2298/SOS220809022M
https://hdl.handle.net/21.15107/rcub_dais_14117 .
Matijašević, Srđan D., Topalović, Vladimir, Savić, Veljko, Labus, Nebojša, Nikolić, Jelena D., Zildžović, Snežana, Grujić, Snežana, "The crystal growth of NASICON phase from the lithium germanium phosphate glass" in Science of Sintering, 539, no. 4 (2023):539-547,
https://doi.org/10.2298/SOS220809022M .,
https://hdl.handle.net/21.15107/rcub_dais_14117 .

Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite

Janićijević, Aleksandra; Filipović, Suzana; Sknepnek, Aleksandra; Vlahović, Branislav; Đorđević, Nenad; Kovacević, Danijela; Mirković, Miljana; Petronijević, Ivan; Živković, Predrag; Rogan, Jelena; Pavlović, Vladimir B.

(Basel : MDPI, 2023)

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Filipović, Suzana
AU  - Sknepnek, Aleksandra
AU  - Vlahović, Branislav
AU  - Đorđević, Nenad
AU  - Kovacević, Danijela
AU  - Mirković, Miljana
AU  - Petronijević, Ivan
AU  - Živković, Predrag
AU  - Rogan, Jelena
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15363
AB  - In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4, and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.
PB  - Basel : MDPI
T2  - Polymers
T1  - Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite
SP  - 4080
VL  - 15
IS  - 20
DO  - 10.3390/polym15204080
UR  - https://hdl.handle.net/21.15107/rcub_dais_15363
ER  - 
@article{
author = "Janićijević, Aleksandra and Filipović, Suzana and Sknepnek, Aleksandra and Vlahović, Branislav and Đorđević, Nenad and Kovacević, Danijela and Mirković, Miljana and Petronijević, Ivan and Živković, Predrag and Rogan, Jelena and Pavlović, Vladimir B.",
year = "2023",
abstract = "In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4, and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.",
publisher = "Basel : MDPI",
journal = "Polymers",
title = "Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite",
pages = "4080",
volume = "15",
number = "20",
doi = "10.3390/polym15204080",
url = "https://hdl.handle.net/21.15107/rcub_dais_15363"
}
Janićijević, A., Filipović, S., Sknepnek, A., Vlahović, B., Đorđević, N., Kovacević, D., Mirković, M., Petronijević, I., Živković, P., Rogan, J.,& Pavlović, V. B.. (2023). Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite. in Polymers
Basel : MDPI., 15(20), 4080.
https://doi.org/10.3390/polym15204080
https://hdl.handle.net/21.15107/rcub_dais_15363
Janićijević A, Filipović S, Sknepnek A, Vlahović B, Đorđević N, Kovacević D, Mirković M, Petronijević I, Živković P, Rogan J, Pavlović VB. Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite. in Polymers. 2023;15(20):4080.
doi:10.3390/polym15204080
https://hdl.handle.net/21.15107/rcub_dais_15363 .
Janićijević, Aleksandra, Filipović, Suzana, Sknepnek, Aleksandra, Vlahović, Branislav, Đorđević, Nenad, Kovacević, Danijela, Mirković, Miljana, Petronijević, Ivan, Živković, Predrag, Rogan, Jelena, Pavlović, Vladimir B., "Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite" in Polymers, 15, no. 20 (2023):4080,
https://doi.org/10.3390/polym15204080 .,
https://hdl.handle.net/21.15107/rcub_dais_15363 .

Fractal analysis and microstructure development of BaTiO3 and PVDF based multifunctional materials

Peleš Tadić, Adriana; Vuković, George; Kojović, Aleksandar; Stojanović, Dušica; Vlahović, Branislav; Milosavljević, Nataša; Obradović, Nina; Pavlović, Vladimir B.

(Belgrade : University of Belgrade - Faculty of Mechanical Engineering, 2023)

TY  - CONF
AU  - Peleš Tadić, Adriana
AU  - Vuković, George
AU  - Kojović, Aleksandar
AU  - Stojanović, Dušica
AU  - Vlahović, Branislav
AU  - Milosavljević, Nataša
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14969
AB  - Barium titanate (BaTiO3) and polyvinylidene fluoride (PVDF) based multifunctional materials are attracting a great scientific interest due to their excellent piezoelectric, pyroelectric and ferroelectric properties. These materials undergo controlled transformations through physical interactions and respond to environmental stimuli, such as temperature, pressure, electric and magnetic fields. Their properties strongly depend on synthesis procedures and obtained microstructures. This include intergranular contact surfaces of BaTiO3 based materials, as well as, porous structure and cross-linking patterns of PVDF prepared by electrospinning. It has been found that these microstructures can have fractal structure and that the fractal analysis can be used as a powerful tool for describing structural and functional properties of these materials. Having this in mind, in this research we have used different fractal methods for the reconstructions of various BaTiO3 and PVDF microstructure morphologies. Fractal analysis has been performed by using scanning electron microscope micrographs and computational modeling tools. Fractal dimension of irregular morphologies which exhibit fractal regularity were determined by using box-counting method. This method enables the analysis of self-similar microstructure morphologies by quantifying the rate at which an object's geometrical details develop at increasingly fine scales. Theory of Iterated Function Systems and Voronoi tessellation, have been used for modeling BaTiO3 random microstructures and PVDF porous structures. A python algorithm was created to determine the distribution of pore areas in SEM micrographs. Algorithm’s distribution of calculated pore surface areas was compared with measured pore surface areas and fractal reconstructions of different morphologies and their connection with functional properties were analyzed.
PB  - Belgrade : University of Belgrade - Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2023, 04 – 07 July 2023, Zlatibor, Serbia
T1  - Fractal analysis and microstructure development of BaTiO3 and PVDF based multifunctional materials
SP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_dais_14969
ER  - 
@conference{
author = "Peleš Tadić, Adriana and Vuković, George and Kojović, Aleksandar and Stojanović, Dušica and Vlahović, Branislav and Milosavljević, Nataša and Obradović, Nina and Pavlović, Vladimir B.",
year = "2023",
abstract = "Barium titanate (BaTiO3) and polyvinylidene fluoride (PVDF) based multifunctional materials are attracting a great scientific interest due to their excellent piezoelectric, pyroelectric and ferroelectric properties. These materials undergo controlled transformations through physical interactions and respond to environmental stimuli, such as temperature, pressure, electric and magnetic fields. Their properties strongly depend on synthesis procedures and obtained microstructures. This include intergranular contact surfaces of BaTiO3 based materials, as well as, porous structure and cross-linking patterns of PVDF prepared by electrospinning. It has been found that these microstructures can have fractal structure and that the fractal analysis can be used as a powerful tool for describing structural and functional properties of these materials. Having this in mind, in this research we have used different fractal methods for the reconstructions of various BaTiO3 and PVDF microstructure morphologies. Fractal analysis has been performed by using scanning electron microscope micrographs and computational modeling tools. Fractal dimension of irregular morphologies which exhibit fractal regularity were determined by using box-counting method. This method enables the analysis of self-similar microstructure morphologies by quantifying the rate at which an object's geometrical details develop at increasingly fine scales. Theory of Iterated Function Systems and Voronoi tessellation, have been used for modeling BaTiO3 random microstructures and PVDF porous structures. A python algorithm was created to determine the distribution of pore areas in SEM micrographs. Algorithm’s distribution of calculated pore surface areas was compared with measured pore surface areas and fractal reconstructions of different morphologies and their connection with functional properties were analyzed.",
publisher = "Belgrade : University of Belgrade - Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2023, 04 – 07 July 2023, Zlatibor, Serbia",
title = "Fractal analysis and microstructure development of BaTiO3 and PVDF based multifunctional materials",
pages = "46",
url = "https://hdl.handle.net/21.15107/rcub_dais_14969"
}
Peleš Tadić, A., Vuković, G., Kojović, A., Stojanović, D., Vlahović, B., Milosavljević, N., Obradović, N.,& Pavlović, V. B.. (2023). Fractal analysis and microstructure development of BaTiO3 and PVDF based multifunctional materials. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2023, 04 – 07 July 2023, Zlatibor, Serbia
Belgrade : University of Belgrade - Faculty of Mechanical Engineering., 46.
https://hdl.handle.net/21.15107/rcub_dais_14969
Peleš Tadić A, Vuković G, Kojović A, Stojanović D, Vlahović B, Milosavljević N, Obradović N, Pavlović VB. Fractal analysis and microstructure development of BaTiO3 and PVDF based multifunctional materials. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2023, 04 – 07 July 2023, Zlatibor, Serbia. 2023;:46.
https://hdl.handle.net/21.15107/rcub_dais_14969 .
Peleš Tadić, Adriana, Vuković, George, Kojović, Aleksandar, Stojanović, Dušica, Vlahović, Branislav, Milosavljević, Nataša, Obradović, Nina, Pavlović, Vladimir B., "Fractal analysis and microstructure development of BaTiO3 and PVDF based multifunctional materials" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2023, 04 – 07 July 2023, Zlatibor, Serbia (2023):46,
https://hdl.handle.net/21.15107/rcub_dais_14969 .

Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal

Vujančević, Jelena; Andričević, Pavao; Đokić, Veljko; Blagojević, Vladimir A.; Pavlović, Vera P.; Ćirković, Jovana; Horváth, Endre; Forró, László; Karoui, Abdennaceur; Pavlović, Vladimir B.; Janaćković, Đorđe

(MDPI, 2023)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Đokić, Veljko
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Ćirković, Jovana
AU  - Horváth, Endre
AU  - Forró, László
AU  - Karoui, Abdennaceur
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14229
AB  - In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.
PB  - MDPI
T2  - Catalysts
T1  - Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal
SP  - 352
VL  - 13
IS  - 2
DO  - 10.3390/catal13020352
UR  - https://hdl.handle.net/21.15107/rcub_dais_14229
ER  - 
@article{
author = "Vujančević, Jelena and Andričević, Pavao and Đokić, Veljko and Blagojević, Vladimir A. and Pavlović, Vera P. and Ćirković, Jovana and Horváth, Endre and Forró, László and Karoui, Abdennaceur and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2023",
abstract = "In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.",
publisher = "MDPI",
journal = "Catalysts",
title = "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal",
pages = "352",
volume = "13",
number = "2",
doi = "10.3390/catal13020352",
url = "https://hdl.handle.net/21.15107/rcub_dais_14229"
}
Vujančević, J., Andričević, P., Đokić, V., Blagojević, V. A., Pavlović, V. P., Ćirković, J., Horváth, E., Forró, L., Karoui, A., Pavlović, V. B.,& Janaćković, Đ.. (2023). Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts
MDPI., 13(2), 352.
https://doi.org/10.3390/catal13020352
https://hdl.handle.net/21.15107/rcub_dais_14229
Vujančević J, Andričević P, Đokić V, Blagojević VA, Pavlović VP, Ćirković J, Horváth E, Forró L, Karoui A, Pavlović VB, Janaćković Đ. Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts. 2023;13(2):352.
doi:10.3390/catal13020352
https://hdl.handle.net/21.15107/rcub_dais_14229 .
Vujančević, Jelena, Andričević, Pavao, Đokić, Veljko, Blagojević, Vladimir A., Pavlović, Vera P., Ćirković, Jovana, Horváth, Endre, Forró, László, Karoui, Abdennaceur, Pavlović, Vladimir B., Janaćković, Đorđe, "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal" in Catalysts, 13, no. 2 (2023):352,
https://doi.org/10.3390/catal13020352 .,
https://hdl.handle.net/21.15107/rcub_dais_14229 .

Fractal analysis and microstructure development PVDF based multifunctional material

Peleš Tadić, Adriana; Vuković, George; Kojović, Aleksandar; Stojanović, Dušica; Vlahović, Branislav; Obradović, Nina; Pavlović, Vladimir

(Belgrade : ETRAN, 2023)

TY  - JOUR
AU  - Peleš Tadić, Adriana
AU  - Vuković, George
AU  - Kojović, Aleksandar
AU  - Stojanović, Dušica
AU  - Vlahović, Branislav
AU  - Obradović, Nina
AU  - Pavlović, Vladimir
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16173
AB  - Polyvinylidene fluoride (PVDF) is a novel gel polymer electrolyte alternative which can reduce the risk of irreversible failure in lithium-ion batteries (LIB) [1]. PVDF matrix structures which exhibit inter-crosslinking networks have previously demonstrated favorable thermal and mechanical properties for LIB applications [2]. PVDF based multifunctional material is attracting a great scientific interest due to its excellent piezoelectric, pyroelectric and ferroelectric properties. Such as, its properties strongly depend on synthesis procedures and obtained microstructures. In this research, porous structure and cross-linking patterns of PVDF were prepared by electrospinning method and it has been found that these microstructures can have fractal structure. Fractal analysis can be used as a powerful tool for describing structural and functional properties of these this material. Because of that, in this research we have used different fractal methods for the reconstructions of various PVDF microstructure morphologies. Fractal analysis has been performed by using scanning electron microscope micrographs and computational modeling tools. Theory of Iterated Function Systems and Voronoi tessellation, have been used for modeling PVDF porous structures. A Python algorithm was created to determine the distribution of pore areas in SEM micrographs. Algorithm’s distribution of calculated pore surface areas were compared with measured pore surface areas and fractal reconstructions of different morphologies and their connection with functional properties were analyzed.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - Fractal analysis and microstructure development PVDF based multifunctional material
DO  - 10.2298/SOS231031061P
UR  - https://hdl.handle.net/21.15107/rcub_dais_16173
ER  - 
@article{
author = "Peleš Tadić, Adriana and Vuković, George and Kojović, Aleksandar and Stojanović, Dušica and Vlahović, Branislav and Obradović, Nina and Pavlović, Vladimir",
year = "2023",
abstract = "Polyvinylidene fluoride (PVDF) is a novel gel polymer electrolyte alternative which can reduce the risk of irreversible failure in lithium-ion batteries (LIB) [1]. PVDF matrix structures which exhibit inter-crosslinking networks have previously demonstrated favorable thermal and mechanical properties for LIB applications [2]. PVDF based multifunctional material is attracting a great scientific interest due to its excellent piezoelectric, pyroelectric and ferroelectric properties. Such as, its properties strongly depend on synthesis procedures and obtained microstructures. In this research, porous structure and cross-linking patterns of PVDF were prepared by electrospinning method and it has been found that these microstructures can have fractal structure. Fractal analysis can be used as a powerful tool for describing structural and functional properties of these this material. Because of that, in this research we have used different fractal methods for the reconstructions of various PVDF microstructure morphologies. Fractal analysis has been performed by using scanning electron microscope micrographs and computational modeling tools. Theory of Iterated Function Systems and Voronoi tessellation, have been used for modeling PVDF porous structures. A Python algorithm was created to determine the distribution of pore areas in SEM micrographs. Algorithm’s distribution of calculated pore surface areas were compared with measured pore surface areas and fractal reconstructions of different morphologies and their connection with functional properties were analyzed.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "Fractal analysis and microstructure development PVDF based multifunctional material",
doi = "10.2298/SOS231031061P",
url = "https://hdl.handle.net/21.15107/rcub_dais_16173"
}
Peleš Tadić, A., Vuković, G., Kojović, A., Stojanović, D., Vlahović, B., Obradović, N.,& Pavlović, V.. (2023). Fractal analysis and microstructure development PVDF based multifunctional material. in Science of Sintering
Belgrade : ETRAN..
https://doi.org/10.2298/SOS231031061P
https://hdl.handle.net/21.15107/rcub_dais_16173
Peleš Tadić A, Vuković G, Kojović A, Stojanović D, Vlahović B, Obradović N, Pavlović V. Fractal analysis and microstructure development PVDF based multifunctional material. in Science of Sintering. 2023;.
doi:10.2298/SOS231031061P
https://hdl.handle.net/21.15107/rcub_dais_16173 .
Peleš Tadić, Adriana, Vuković, George, Kojović, Aleksandar, Stojanović, Dušica, Vlahović, Branislav, Obradović, Nina, Pavlović, Vladimir, "Fractal analysis and microstructure development PVDF based multifunctional material" in Science of Sintering (2023),
https://doi.org/10.2298/SOS231031061P .,
https://hdl.handle.net/21.15107/rcub_dais_16173 .

Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell

Popović, Aleksandra S.; Jugović, Dragana; Grgur, Branimir

(Springer Science and Business Media LLC, 2023)

TY  - JOUR
AU  - Popović, Aleksandra S.
AU  - Jugović, Dragana
AU  - Grgur, Branimir
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16174
AB  - Primary seawater magnesium-based cell with AgCl or PbCl2 cathodes is widely used as power sources. In this paper, we consider the cyclic galvanostatic formation of silver and lead chlorides and their electrochemical behavior for potential applications in the new concept of the seawater quasi-rechargeable magnesium cell. For potential cells, the voltage for Mg alloy AZ63 and AgCl is ~ 1.5 V, and for the PbCl2, ~ 1 V. High discharge specific capacity, energy, and power are obtained under the very high discharge rate. It is also presented that systems could be potentially used in emergency situations for a few days up to a few weeks as a power source in the life-saving boat for sporadic emitting GPS-SOS tacking signals and night signal lights.
PB  - Springer Science and Business Media LLC
T2  - Journal of Materials Science: Materials in Electronics
T1  - Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell
SP  - 1155
VL  - 34
IS  - 14
DO  - 10.1007/s10854-023-10558-9
UR  - https://hdl.handle.net/21.15107/rcub_dais_16174
ER  - 
@article{
author = "Popović, Aleksandra S. and Jugović, Dragana and Grgur, Branimir",
year = "2023",
abstract = "Primary seawater magnesium-based cell with AgCl or PbCl2 cathodes is widely used as power sources. In this paper, we consider the cyclic galvanostatic formation of silver and lead chlorides and their electrochemical behavior for potential applications in the new concept of the seawater quasi-rechargeable magnesium cell. For potential cells, the voltage for Mg alloy AZ63 and AgCl is ~ 1.5 V, and for the PbCl2, ~ 1 V. High discharge specific capacity, energy, and power are obtained under the very high discharge rate. It is also presented that systems could be potentially used in emergency situations for a few days up to a few weeks as a power source in the life-saving boat for sporadic emitting GPS-SOS tacking signals and night signal lights.",
publisher = "Springer Science and Business Media LLC",
journal = "Journal of Materials Science: Materials in Electronics",
title = "Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell",
pages = "1155",
volume = "34",
number = "14",
doi = "10.1007/s10854-023-10558-9",
url = "https://hdl.handle.net/21.15107/rcub_dais_16174"
}
Popović, A. S., Jugović, D.,& Grgur, B.. (2023). Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell. in Journal of Materials Science: Materials in Electronics
Springer Science and Business Media LLC., 34(14), 1155.
https://doi.org/10.1007/s10854-023-10558-9
https://hdl.handle.net/21.15107/rcub_dais_16174
Popović AS, Jugović D, Grgur B. Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell. in Journal of Materials Science: Materials in Electronics. 2023;34(14):1155.
doi:10.1007/s10854-023-10558-9
https://hdl.handle.net/21.15107/rcub_dais_16174 .
Popović, Aleksandra S., Jugović, Dragana, Grgur, Branimir, "Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell" in Journal of Materials Science: Materials in Electronics, 34, no. 14 (2023):1155,
https://doi.org/10.1007/s10854-023-10558-9 .,
https://hdl.handle.net/21.15107/rcub_dais_16174 .

Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell

Popović, Aleksandra S.; Jugović, Dragana; Grgur, Branimir

(Springer Science and Business Media LLC, 2023)

TY  - JOUR
AU  - Popović, Aleksandra S.
AU  - Jugović, Dragana
AU  - Grgur, Branimir
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14544
AB  - Primary seawater magnesium-based cell with AgCl or PbCl2 cathodes is widely used as power sources. In this paper, we consider the cyclic galvanostatic formation of silver and lead chlorides and their electrochemical behavior for potential applications in the new concept of the seawater quasi-rechargeable magnesium cell. For potential cells, the voltage for Mg alloy AZ63 and AgCl is ~ 1.5 V, and for the PbCl2, ~ 1 V. High discharge specific capacity, energy, and power are obtained under the very high discharge rate. It is also presented that systems could be potentially used in emergency situations for a few days up to a few weeks as a power source in the life-saving boat for sporadic emitting GPS-SOS tacking signals and night signal lights.
PB  - Springer Science and Business Media LLC
T2  - Journal of Materials Science: Materials in Electronics
T1  - Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell
SP  - 1155
VL  - 34
DO  - 10.1007/s10854-023-10558-9
UR  - https://hdl.handle.net/21.15107/rcub_dais_14544
ER  - 
@article{
author = "Popović, Aleksandra S. and Jugović, Dragana and Grgur, Branimir",
year = "2023",
abstract = "Primary seawater magnesium-based cell with AgCl or PbCl2 cathodes is widely used as power sources. In this paper, we consider the cyclic galvanostatic formation of silver and lead chlorides and their electrochemical behavior for potential applications in the new concept of the seawater quasi-rechargeable magnesium cell. For potential cells, the voltage for Mg alloy AZ63 and AgCl is ~ 1.5 V, and for the PbCl2, ~ 1 V. High discharge specific capacity, energy, and power are obtained under the very high discharge rate. It is also presented that systems could be potentially used in emergency situations for a few days up to a few weeks as a power source in the life-saving boat for sporadic emitting GPS-SOS tacking signals and night signal lights.",
publisher = "Springer Science and Business Media LLC",
journal = "Journal of Materials Science: Materials in Electronics",
title = "Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell",
pages = "1155",
volume = "34",
doi = "10.1007/s10854-023-10558-9",
url = "https://hdl.handle.net/21.15107/rcub_dais_14544"
}
Popović, A. S., Jugović, D.,& Grgur, B.. (2023). Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell. in Journal of Materials Science: Materials in Electronics
Springer Science and Business Media LLC., 34, 1155.
https://doi.org/10.1007/s10854-023-10558-9
https://hdl.handle.net/21.15107/rcub_dais_14544
Popović AS, Jugović D, Grgur B. Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell. in Journal of Materials Science: Materials in Electronics. 2023;34:1155.
doi:10.1007/s10854-023-10558-9
https://hdl.handle.net/21.15107/rcub_dais_14544 .
Popović, Aleksandra S., Jugović, Dragana, Grgur, Branimir, "Electrochemical formation and behavior of silver and lead chlorides as potential cathodes for quasi-rechargeable magnesium seawater cell" in Journal of Materials Science: Materials in Electronics, 34 (2023):1155,
https://doi.org/10.1007/s10854-023-10558-9 .,
https://hdl.handle.net/21.15107/rcub_dais_14544 .

Morphological and Structural Characterization of MgAl2O4 Spinel

Obradović, Nina; Filipović, Suzana; Fahrenholtz, William G.; Marinković, Bojan A.; Rogan, Jelena; Lević, Steva; Đorđević, Antonije; Pavlović, Vladimir B.

(ETRAN, 2023)

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Fahrenholtz, William G.
AU  - Marinković, Bojan A.
AU  - Rogan, Jelena
AU  - Lević, Steva
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14704
AB  - Magnesium aluminate has the spinel structure along with good mechanical, chemical, and thermal properties. Magnesium aluminate has a wide range of applications including refractory ceramics, optically transparent ceramic windows, and armors. Its low dielectric permeability and low loss tangent enable its applications for integrated electronic devices, as well. In this paper, MgO and Al2O3 powders were mixed in a one-to-one molar ratio and calcined at temperatures ranging from 1500 to 1800°C to produce phase pure spinel. Thereafter, pellets were crushed and treated in a planetary ball mill for 60 min to obtain a fine powder. All powders were examined for phase composition, crystal structure, and morphology. The obtained results showed that by increasing the temperature, samples with higher density were synthesized. Milling for 1 h led to formation of larger particles, but finer powders after milling. XRPD and Raman spectroscopy showed disorder in the crystal structure after milling.
AB  - Магнезијум алуминат поседује структуру спинела и добра механичка, хемијска и термичка својства. Има широк спектар примене, укључујући рефракторну керамику, оружје и оптички транспарентна керамичка стакла. Ниска диелектрична пермеабилност и тангенс губитака пружају овој керамици примену и у електричним направама. У овом раду, прахови MgO и Al2O3 су помешани у моларном односу 1:1 и калцинисани на температурама између 1500°C и 1800°C да би се добио спинел. Након тога, узорци су смрвљени и механички активирани у млину током 60 минута да би се добио фини уситњен прах. Одређени су фазни састав, кристална структура и морфологија свих прахова. Резултати су показали да са порастом температуре расте и густина синтетисаних узорака. Млевење од 1 сата води ка формирању већих честица, али финијих прахова након млевења. XRPD и Раман спектроскопија указују на неуређену кристалну структуру након млевења.
PB  - ETRAN
T2  - Science of Sintering
T1  - Morphological and Structural Characterization of MgAl2O4 Spinel
SP  - 1
EP  - 10
VL  - 55
IS  - 1
DO  - 10.2298/SOS2301001O
UR  - https://hdl.handle.net/21.15107/rcub_dais_14704
ER  - 
@article{
author = "Obradović, Nina and Filipović, Suzana and Fahrenholtz, William G. and Marinković, Bojan A. and Rogan, Jelena and Lević, Steva and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2023",
abstract = "Magnesium aluminate has the spinel structure along with good mechanical, chemical, and thermal properties. Magnesium aluminate has a wide range of applications including refractory ceramics, optically transparent ceramic windows, and armors. Its low dielectric permeability and low loss tangent enable its applications for integrated electronic devices, as well. In this paper, MgO and Al2O3 powders were mixed in a one-to-one molar ratio and calcined at temperatures ranging from 1500 to 1800°C to produce phase pure spinel. Thereafter, pellets were crushed and treated in a planetary ball mill for 60 min to obtain a fine powder. All powders were examined for phase composition, crystal structure, and morphology. The obtained results showed that by increasing the temperature, samples with higher density were synthesized. Milling for 1 h led to formation of larger particles, but finer powders after milling. XRPD and Raman spectroscopy showed disorder in the crystal structure after milling., Магнезијум алуминат поседује структуру спинела и добра механичка, хемијска и термичка својства. Има широк спектар примене, укључујући рефракторну керамику, оружје и оптички транспарентна керамичка стакла. Ниска диелектрична пермеабилност и тангенс губитака пружају овој керамици примену и у електричним направама. У овом раду, прахови MgO и Al2O3 су помешани у моларном односу 1:1 и калцинисани на температурама између 1500°C и 1800°C да би се добио спинел. Након тога, узорци су смрвљени и механички активирани у млину током 60 минута да би се добио фини уситњен прах. Одређени су фазни састав, кристална структура и морфологија свих прахова. Резултати су показали да са порастом температуре расте и густина синтетисаних узорака. Млевење од 1 сата води ка формирању већих честица, али финијих прахова након млевења. XRPD и Раман спектроскопија указују на неуређену кристалну структуру након млевења.",
publisher = "ETRAN",
journal = "Science of Sintering",
title = "Morphological and Structural Characterization of MgAl2O4 Spinel",
pages = "1-10",
volume = "55",
number = "1",
doi = "10.2298/SOS2301001O",
url = "https://hdl.handle.net/21.15107/rcub_dais_14704"
}
Obradović, N., Filipović, S., Fahrenholtz, W. G., Marinković, B. A., Rogan, J., Lević, S., Đorđević, A.,& Pavlović, V. B.. (2023). Morphological and Structural Characterization of MgAl2O4 Spinel. in Science of Sintering
ETRAN., 55(1), 1-10.
https://doi.org/10.2298/SOS2301001O
https://hdl.handle.net/21.15107/rcub_dais_14704
Obradović N, Filipović S, Fahrenholtz WG, Marinković BA, Rogan J, Lević S, Đorđević A, Pavlović VB. Morphological and Structural Characterization of MgAl2O4 Spinel. in Science of Sintering. 2023;55(1):1-10.
doi:10.2298/SOS2301001O
https://hdl.handle.net/21.15107/rcub_dais_14704 .
Obradović, Nina, Filipović, Suzana, Fahrenholtz, William G., Marinković, Bojan A., Rogan, Jelena, Lević, Steva, Đorđević, Antonije, Pavlović, Vladimir B., "Morphological and Structural Characterization of MgAl2O4 Spinel" in Science of Sintering, 55, no. 1 (2023):1-10,
https://doi.org/10.2298/SOS2301001O .,
https://hdl.handle.net/21.15107/rcub_dais_14704 .

Nanomechanical properties of PVDF–ZnO polymer nanocomposite

Peleš Tadić, Adriana; Blagojević, Vladimir A.; Stojanović, Dušica; Ostojić, Sanja B.; Tasić, Nikola; Kosanović, Darko; Uskoković, Petar; Pavlović, Vladimir B.

(Elsevier BV, 2023)

TY  - JOUR
AU  - Peleš Tadić, Adriana
AU  - Blagojević, Vladimir A.
AU  - Stojanović, Dušica
AU  - Ostojić, Sanja B.
AU  - Tasić, Nikola
AU  - Kosanović, Darko
AU  - Uskoković, Petar
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/13560
AB  - Poly(vinylidenefluoride)–ZnO (PVDF–ZnO) nanocomposites with mechanically activated ZnO nanoparticle fillers were investigated using thermal and mechanical analysis and AFM and PFM. Differential scanning calorimetry (DSC) investigated the effect of ZnO nanoparticles on the crystallinity of the polymer, under controlled heating and cooling. Atomic force (AFM) microscopy was used to record the surfaces of the samples. Nanocomposite surface roughness shows the presence of the different phases inside of the matrix, where rough samples contain a higher proportion of the β phase. PFM was performed to investigate the piezoresponse of the composites. Nanoidentation showed that the mechanical activation of the filler (ZnO) increases the Young modulus with the activation time. Molecular simulations in periodic systems (PVDF–ZnO spherical nanocluster and nanocylinder composite) were used to investigate the influence of particle size and shape on the Young modulus of different phases of PVDF.
PB  - Elsevier BV
T2  - Materials Science and Engineering: B
T1  - Nanomechanical properties of PVDF–ZnO polymer nanocomposite
SP  - 116126
VL  - 287
DO  - 10.1016/j.mseb.2022.116126
UR  - https://hdl.handle.net/21.15107/rcub_dais_13436
ER  - 
@article{
author = "Peleš Tadić, Adriana and Blagojević, Vladimir A. and Stojanović, Dušica and Ostojić, Sanja B. and Tasić, Nikola and Kosanović, Darko and Uskoković, Petar and Pavlović, Vladimir B.",
year = "2023",
abstract = "Poly(vinylidenefluoride)–ZnO (PVDF–ZnO) nanocomposites with mechanically activated ZnO nanoparticle fillers were investigated using thermal and mechanical analysis and AFM and PFM. Differential scanning calorimetry (DSC) investigated the effect of ZnO nanoparticles on the crystallinity of the polymer, under controlled heating and cooling. Atomic force (AFM) microscopy was used to record the surfaces of the samples. Nanocomposite surface roughness shows the presence of the different phases inside of the matrix, where rough samples contain a higher proportion of the β phase. PFM was performed to investigate the piezoresponse of the composites. Nanoidentation showed that the mechanical activation of the filler (ZnO) increases the Young modulus with the activation time. Molecular simulations in periodic systems (PVDF–ZnO spherical nanocluster and nanocylinder composite) were used to investigate the influence of particle size and shape on the Young modulus of different phases of PVDF.",
publisher = "Elsevier BV",
journal = "Materials Science and Engineering: B",
title = "Nanomechanical properties of PVDF–ZnO polymer nanocomposite",
pages = "116126",
volume = "287",
doi = "10.1016/j.mseb.2022.116126",
url = "https://hdl.handle.net/21.15107/rcub_dais_13436"
}
Peleš Tadić, A., Blagojević, V. A., Stojanović, D., Ostojić, S. B., Tasić, N., Kosanović, D., Uskoković, P.,& Pavlović, V. B.. (2023). Nanomechanical properties of PVDF–ZnO polymer nanocomposite. in Materials Science and Engineering: B
Elsevier BV., 287, 116126.
https://doi.org/10.1016/j.mseb.2022.116126
https://hdl.handle.net/21.15107/rcub_dais_13436
Peleš Tadić A, Blagojević VA, Stojanović D, Ostojić SB, Tasić N, Kosanović D, Uskoković P, Pavlović VB. Nanomechanical properties of PVDF–ZnO polymer nanocomposite. in Materials Science and Engineering: B. 2023;287:116126.
doi:10.1016/j.mseb.2022.116126
https://hdl.handle.net/21.15107/rcub_dais_13436 .
Peleš Tadić, Adriana, Blagojević, Vladimir A., Stojanović, Dušica, Ostojić, Sanja B., Tasić, Nikola, Kosanović, Darko, Uskoković, Petar, Pavlović, Vladimir B., "Nanomechanical properties of PVDF–ZnO polymer nanocomposite" in Materials Science and Engineering: B, 287 (2023):116126,
https://doi.org/10.1016/j.mseb.2022.116126 .,
https://hdl.handle.net/21.15107/rcub_dais_13436 .
6
5

Effect of mechanical activation on carbothermal synthesis and densification of ZrC

Obradović, Nina; Feng, Lun; Filipović, Suzana; Mirković, Miljana; Kosanović, Darko; Rogan, Jelena; Fahrenholtz, William G.

(Elsevier BV, 2023)

TY  - JOUR
AU  - Obradović, Nina
AU  - Feng, Lun
AU  - Filipović, Suzana
AU  - Mirković, Miljana
AU  - Kosanović, Darko
AU  - Rogan, Jelena
AU  - Fahrenholtz, William G.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14890
AB  - Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.
PB  - Elsevier BV
T2  - Journal of the European Ceramic Society
T1  - Effect of mechanical activation on carbothermal synthesis and densification of ZrC
SP  - 7306
EP  - 7313
DO  - 10.1016/j.jeurceramsoc.2023.08.007
UR  - https://hdl.handle.net/21.15107/rcub_dais_14890
ER  - 
@article{
author = "Obradović, Nina and Feng, Lun and Filipović, Suzana and Mirković, Miljana and Kosanović, Darko and Rogan, Jelena and Fahrenholtz, William G.",
year = "2023",
abstract = "Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.",
publisher = "Elsevier BV",
journal = "Journal of the European Ceramic Society",
title = "Effect of mechanical activation on carbothermal synthesis and densification of ZrC",
pages = "7306-7313",
doi = "10.1016/j.jeurceramsoc.2023.08.007",
url = "https://hdl.handle.net/21.15107/rcub_dais_14890"
}
Obradović, N., Feng, L., Filipović, S., Mirković, M., Kosanović, D., Rogan, J.,& Fahrenholtz, W. G.. (2023). Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society
Elsevier BV., 7306-7313.
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14890
Obradović N, Feng L, Filipović S, Mirković M, Kosanović D, Rogan J, Fahrenholtz WG. Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society. 2023;:7306-7313.
doi:10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14890 .
Obradović, Nina, Feng, Lun, Filipović, Suzana, Mirković, Miljana, Kosanović, Darko, Rogan, Jelena, Fahrenholtz, William G., "Effect of mechanical activation on carbothermal synthesis and densification of ZrC" in Journal of the European Ceramic Society (2023):7306-7313,
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007 .,
https://hdl.handle.net/21.15107/rcub_dais_14890 .
1
1

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 .
2
2

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 .

Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora

Stefanović, Milica P.; Vujančević, Jelena; Petrović, Rada P.; Stevanović, Marija S.; Janaćković, Đorđe

(Savez inženjera i tehničara Srbije, 2022)

TY  - JOUR
AU  - Stefanović, Milica P.
AU  - Vujančević, Jelena
AU  - Petrović, Rada P.
AU  - Stevanović, Marija S.
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/14853
AB  - Organsko-neorganski perovskiti su privukli veliku pažnju istraživača zbog visoke apsorpcije u vidljivomdelu spektra i jeftine proizvodnje. Apsorbovanjem svetlosti dolazi do stvaranja para elektron-šupljina.U cilju razdvajanja nosilaca naelektrisanja, perovskit se kombinuje sa TiO2 što ima za posledicuspontani prelazak elektrona sa perovskita na TiO2. Ovo istraživanje je imalo za cilj povećanje dodirnepovršine između nanocevi TiO2 i perovskita punjenjem nanocevi perovskitnim materijalom. Rastvormetilamonijum olovo(II)-bromidnog perovskita (CH3NH3PbBr3) u dimetilformamidu (DMF) jedeponovan na anodizacijom sintetisane TiO2 nanocevi pomoću sistema visokog vakuuma i inertnoggasa. Postupak je uključivao degazaciju uzorka u visokom vakuumu u trajanju od 3 h na 200 °C, hlađenjeuzorka, a zatim nanošenje rastvora CH3NH3PbBr3 u DMF-u, uz naknadni tretman inertnim gasom (N2)u cilju ostvarenja natpritiska, što je omogućilo punjenje nanocevi perovskitnim materijalom. Difuznorefleksiona spektroskopija pokazala je da taloženje CH3NH3PbBr3 poboljšava apsorpciona svojstvaTiO2 nanocevi. I-V karakteristike uzorka pokazale su fotodiodno ponašanje i histerezisnu krivu, koja jekarakteristična za perovskitni materijal. Vrednost struje uzorka snimljenim pod vidljivom svetlošćuiznosila je 46 μA bez primene prednapona, dok je nakon primene prednapona iznosila 76 μA. Rezultatirada ukazuju da je napravljena perovskitna fotodioda sa povećanim kontaktom između TiO2 i perovskita,koja predstavlja osnovu za buduću konstrukciju solarnih ćelija.
AB  - Organic-inorganic perovskites have attracted much attention from researchers due to their high absorption in the visible part of the spectrum and low-cost fabrication. After absorption of the light, electron-hole pairs are formed. To separate electron-hole pairs and reduce recombination, perovskite is combined with TiO2 which has as a consequence, a spontaneous transition of electrons from perovskite to TiO2. This research aims to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material. The solution of methylammonium lead bromide perovskite (CH3NH3PbBr3) in dimethylformamide (DMF) was deposited on anodically synthesized TiO2 nanotubes by the high vacuum system and inert gas. The procedure involved degassation of the sample under high vacuum for 3 h at 200 °C, cooling of the sample, and putting the solution of CH3NH3PbBr3 in DMF, after which it was treated with inert gas (N2), as an overpressure which enabled the filling of the nanotubes with perovskite material. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of CH3NH3PbBr3 improves the absorption properties of TiO2 nanotubes. The I-V characteristics of the sample showed photodiode behavior and characteristic hysteresis curve for perovskite material. The value of current under visible light for the sample without preconditioning was 46 mA, while after preconditioning value of current was 76 mA. The results indicate that a perovskite photodiode with increased contact between TiO2 and perovskite was made, which is the basis for future solar cell construction.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora
T1  - Improvement of absorption properties of TiO2 nanotubes by using CH3NH3PbBr3 perovskite as photosensitizer
SP  - 15
EP  - 21
VL  - 31
IS  - 1
DO  - 10.5937/tehnika2201015S
UR  - https://hdl.handle.net/21.15107/rcub_dais_14853
ER  - 
@article{
author = "Stefanović, Milica P. and Vujančević, Jelena and Petrović, Rada P. and Stevanović, Marija S. and Janaćković, Đorđe",
year = "2022",
abstract = "Organsko-neorganski perovskiti su privukli veliku pažnju istraživača zbog visoke apsorpcije u vidljivomdelu spektra i jeftine proizvodnje. Apsorbovanjem svetlosti dolazi do stvaranja para elektron-šupljina.U cilju razdvajanja nosilaca naelektrisanja, perovskit se kombinuje sa TiO2 što ima za posledicuspontani prelazak elektrona sa perovskita na TiO2. Ovo istraživanje je imalo za cilj povećanje dodirnepovršine između nanocevi TiO2 i perovskita punjenjem nanocevi perovskitnim materijalom. Rastvormetilamonijum olovo(II)-bromidnog perovskita (CH3NH3PbBr3) u dimetilformamidu (DMF) jedeponovan na anodizacijom sintetisane TiO2 nanocevi pomoću sistema visokog vakuuma i inertnoggasa. Postupak je uključivao degazaciju uzorka u visokom vakuumu u trajanju od 3 h na 200 °C, hlađenjeuzorka, a zatim nanošenje rastvora CH3NH3PbBr3 u DMF-u, uz naknadni tretman inertnim gasom (N2)u cilju ostvarenja natpritiska, što je omogućilo punjenje nanocevi perovskitnim materijalom. Difuznorefleksiona spektroskopija pokazala je da taloženje CH3NH3PbBr3 poboljšava apsorpciona svojstvaTiO2 nanocevi. I-V karakteristike uzorka pokazale su fotodiodno ponašanje i histerezisnu krivu, koja jekarakteristična za perovskitni materijal. Vrednost struje uzorka snimljenim pod vidljivom svetlošćuiznosila je 46 μA bez primene prednapona, dok je nakon primene prednapona iznosila 76 μA. Rezultatirada ukazuju da je napravljena perovskitna fotodioda sa povećanim kontaktom između TiO2 i perovskita,koja predstavlja osnovu za buduću konstrukciju solarnih ćelija., Organic-inorganic perovskites have attracted much attention from researchers due to their high absorption in the visible part of the spectrum and low-cost fabrication. After absorption of the light, electron-hole pairs are formed. To separate electron-hole pairs and reduce recombination, perovskite is combined with TiO2 which has as a consequence, a spontaneous transition of electrons from perovskite to TiO2. This research aims to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material. The solution of methylammonium lead bromide perovskite (CH3NH3PbBr3) in dimethylformamide (DMF) was deposited on anodically synthesized TiO2 nanotubes by the high vacuum system and inert gas. The procedure involved degassation of the sample under high vacuum for 3 h at 200 °C, cooling of the sample, and putting the solution of CH3NH3PbBr3 in DMF, after which it was treated with inert gas (N2), as an overpressure which enabled the filling of the nanotubes with perovskite material. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of CH3NH3PbBr3 improves the absorption properties of TiO2 nanotubes. The I-V characteristics of the sample showed photodiode behavior and characteristic hysteresis curve for perovskite material. The value of current under visible light for the sample without preconditioning was 46 mA, while after preconditioning value of current was 76 mA. The results indicate that a perovskite photodiode with increased contact between TiO2 and perovskite was made, which is the basis for future solar cell construction.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora, Improvement of absorption properties of TiO2 nanotubes by using CH3NH3PbBr3 perovskite as photosensitizer",
pages = "15-21",
volume = "31",
number = "1",
doi = "10.5937/tehnika2201015S",
url = "https://hdl.handle.net/21.15107/rcub_dais_14853"
}
Stefanović, M. P., Vujančević, J., Petrović, R. P., Stevanović, M. S.,& Janaćković, Đ.. (2022). Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora. in Tehnika
Savez inženjera i tehničara Srbije., 31(1), 15-21.
https://doi.org/10.5937/tehnika2201015S
https://hdl.handle.net/21.15107/rcub_dais_14853
Stefanović MP, Vujančević J, Petrović RP, Stevanović MS, Janaćković Đ. Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora. in Tehnika. 2022;31(1):15-21.
doi:10.5937/tehnika2201015S
https://hdl.handle.net/21.15107/rcub_dais_14853 .
Stefanović, Milica P., Vujančević, Jelena, Petrović, Rada P., Stevanović, Marija S., Janaćković, Đorđe, "Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora" in Tehnika, 31, no. 1 (2022):15-21,
https://doi.org/10.5937/tehnika2201015S .,
https://hdl.handle.net/21.15107/rcub_dais_14853 .

Alkali activated slag based on steelmaking slag: application and properties

Nikolić, Irena; Radmilović, Vuk V.; Marković, Smilja; Veselinović, Ljiljana; Janković-Častvan, Ivona; Radmilović, Velimir R.

(Belgrade : Serbian Academy of Sciences and Arts, 2022)

TY  - CONF
AU  - Nikolić, Irena
AU  - Radmilović, Vuk V.
AU  - Marković, Smilja
AU  - Veselinović, Ljiljana
AU  - Janković-Častvan, Ivona
AU  - Radmilović, Velimir R.
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13638
AB  - Alkali activated slag (AAS) is an environmentally friendly material which were extensively investigated in a pass two decade. Currently, these materials are considering as an effective alternative for cement binder. Process of slag alkali activation involves a chemical reaction between solid calcium aluminosilicate materials and a highly alkaline activator. The alkali activation mechanism of slag consists of the slag dissolution in a highly alkaline which is followed by the condensation and hardening processes yielding formation of calcium (alumina) silicate hydrate C– (A)–S–H gel as a reaction product of slag alkali activation. Properties of these materials primarily depends on the choice of solid row materials. Primarily, granulated blast furnace slag, by product of iron production) is considering as a precursor for AAS synthesis. However, an important shift towards the use of steelmaking slag is also observed. Although electric arc furnace slag has already found its application mainly in civil engineering, this investigation has aimed to investigate properties of AAS prepared using the electric arc furnace slag (EAFS) with an emphasize with different possibilities of its application. Characterization of AAS involved XRDP, SEM/EDS and pore size analysis with the aim to build up a detailed illustration of AAS from the stand point of different application.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022
T1  - Alkali activated slag based on steelmaking slag: application and properties
SP  - 92
EP  - 93
UR  - https://hdl.handle.net/21.15107/rcub_dais_13638
ER  - 
@conference{
author = "Nikolić, Irena and Radmilović, Vuk V. and Marković, Smilja and Veselinović, Ljiljana and Janković-Častvan, Ivona and Radmilović, Velimir R.",
year = "2022",
abstract = "Alkali activated slag (AAS) is an environmentally friendly material which were extensively investigated in a pass two decade. Currently, these materials are considering as an effective alternative for cement binder. Process of slag alkali activation involves a chemical reaction between solid calcium aluminosilicate materials and a highly alkaline activator. The alkali activation mechanism of slag consists of the slag dissolution in a highly alkaline which is followed by the condensation and hardening processes yielding formation of calcium (alumina) silicate hydrate C– (A)–S–H gel as a reaction product of slag alkali activation. Properties of these materials primarily depends on the choice of solid row materials. Primarily, granulated blast furnace slag, by product of iron production) is considering as a precursor for AAS synthesis. However, an important shift towards the use of steelmaking slag is also observed. Although electric arc furnace slag has already found its application mainly in civil engineering, this investigation has aimed to investigate properties of AAS prepared using the electric arc furnace slag (EAFS) with an emphasize with different possibilities of its application. Characterization of AAS involved XRDP, SEM/EDS and pore size analysis with the aim to build up a detailed illustration of AAS from the stand point of different application.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022",
title = "Alkali activated slag based on steelmaking slag: application and properties",
pages = "92-93",
url = "https://hdl.handle.net/21.15107/rcub_dais_13638"
}
Nikolić, I., Radmilović, V. V., Marković, S., Veselinović, L., Janković-Častvan, I.,& Radmilović, V. R.. (2022). Alkali activated slag based on steelmaking slag: application and properties. in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022
Belgrade : Serbian Academy of Sciences and Arts., 92-93.
https://hdl.handle.net/21.15107/rcub_dais_13638
Nikolić I, Radmilović VV, Marković S, Veselinović L, Janković-Častvan I, Radmilović VR. Alkali activated slag based on steelmaking slag: application and properties. in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022. 2022;:92-93.
https://hdl.handle.net/21.15107/rcub_dais_13638 .
Nikolić, Irena, Radmilović, Vuk V., Marković, Smilja, Veselinović, Ljiljana, Janković-Častvan, Ivona, Radmilović, Velimir R., "Alkali activated slag based on steelmaking slag: application and properties" in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022 (2022):92-93,
https://hdl.handle.net/21.15107/rcub_dais_13638 .

Supplementary information for the article Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614, https://doi.org/10.3390/polym14132614

Jonović, Marko; Jugović, Branimir; Žuža, Milena; Đorđević, Verica; Milašinović, Nikola; Bugarski, Branko; Knežević-Jugović, Zorica

(MDPI AG, 2022)

TY  - DATA
AU  - Jonović, Marko
AU  - Jugović, Branimir
AU  - Žuža, Milena
AU  - Đorđević, Verica
AU  - Milašinović, Nikola
AU  - Bugarski, Branko
AU  - Knežević-Jugović, Zorica
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13156
AB  - Figure S1: Effects on the decolorization process: HRP-MAB size (a) AB225, (b) AV109; MAG-alginate ratio (c) AB225, (d) AV109; initial HRP concentration (e) AB225, (f) AV109; HRP-MAB mass (g) AB225, (h) AV109; initial H2O2 concentration (i) AB225, (j) AV109 and initial dye concentration (k) AB225, (l) AV109; Table S1: Reaction conditions for the optimization of decolorization process of AB225 and AV109 color
PB  - MDPI AG
T2  - Polymers
T1  - Supplementary information for the article Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614, https://doi.org/10.3390/polym14132614
VL  - 14
UR  - https://hdl.handle.net/21.15107/rcub_dais_13156
ER  - 
@misc{
author = "Jonović, Marko and Jugović, Branimir and Žuža, Milena and Đorđević, Verica and Milašinović, Nikola and Bugarski, Branko and Knežević-Jugović, Zorica",
year = "2022",
abstract = "Figure S1: Effects on the decolorization process: HRP-MAB size (a) AB225, (b) AV109; MAG-alginate ratio (c) AB225, (d) AV109; initial HRP concentration (e) AB225, (f) AV109; HRP-MAB mass (g) AB225, (h) AV109; initial H2O2 concentration (i) AB225, (j) AV109 and initial dye concentration (k) AB225, (l) AV109; Table S1: Reaction conditions for the optimization of decolorization process of AB225 and AV109 color",
publisher = "MDPI AG",
journal = "Polymers",
title = "Supplementary information for the article Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614, https://doi.org/10.3390/polym14132614",
volume = "14",
url = "https://hdl.handle.net/21.15107/rcub_dais_13156"
}
Jonović, M., Jugović, B., Žuža, M., Đorđević, V., Milašinović, N., Bugarski, B.,& Knežević-Jugović, Z.. (2022). Supplementary information for the article Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614, https://doi.org/10.3390/polym14132614. in Polymers
MDPI AG., 14.
https://hdl.handle.net/21.15107/rcub_dais_13156
Jonović M, Jugović B, Žuža M, Đorđević V, Milašinović N, Bugarski B, Knežević-Jugović Z. Supplementary information for the article Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614, https://doi.org/10.3390/polym14132614. in Polymers. 2022;14.
https://hdl.handle.net/21.15107/rcub_dais_13156 .
Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Supplementary information for the article Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614, https://doi.org/10.3390/polym14132614" in Polymers, 14 (2022),
https://hdl.handle.net/21.15107/rcub_dais_13156 .

Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation

Jonović, Marko; Jugović, Branimir; Žuža, Milena; Đorđević, Verica; Milašinović, Nikola; Bugarski, Branko; Knežević-Jugović, Zorica

(MDPI AG, 2022)

TY  - JOUR
AU  - Jonović, Marko
AU  - Jugović, Branimir
AU  - Žuža, Milena
AU  - Đorđević, Verica
AU  - Milašinović, Nikola
AU  - Bugarski, Branko
AU  - Knežević-Jugović, Zorica
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13155
AB  - The aim of this study was to investigate covalent immobilization of horseradish peroxidase (HRP) on magnetic nanoparticles (Mag) encapsulated in calcium alginate beads (MABs) for color degradation, combining easy and fast removal of biocatalyst from the reaction mixture due to its magnetic properties and strong binding due to surface alginate functional groups. MABs obtained by extrusion techniques were analyzed by optical microscopy, FEG-SEM and characterized regarding mechanical properties, magnetization and HRP binding. HRP with initial concentration of 10 mg/gcarrier was successfully covalently bonded on MABs (diameter ~1 mm, magnetite/alginate ratio 1:4), with protein loading of 8.9 mg/gcarrier, immobilization yield 96.9% and activity 32.8 U/g. Immobilized HRP on MABs (HRP-MABs) was then used to catalyze degradation of two anthraquinonic dyes, Acid Blue 225 (AB225) and Acid Violet 109 (AV109), as models for wastewater pollutants. HRP-MABs decolorized 77.3% and 76.1% of AV109 and AB225, respectively after 15 min under optimal conditions (0.097 mM H2O2, 200 mg of HRP-MABs (8.9 mg/gcarrier), 0.08 and 0.1 g/mg beads/dye ratio for AV109 and AB225, respectively). Biocatalyst was used for 7 repeated cycles retaining 75% and 51% of initial activity for AB225 and AV109, respectively, showing potential for use in large scale applications for colored wastewater treatment.
PB  - MDPI AG
T2  - Polymers
T1  - Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation
SP  - 2614
VL  - 14
IS  - 13
DO  - 10.3390/polym14132614
UR  - https://hdl.handle.net/21.15107/rcub_dais_13155
ER  - 
@article{
author = "Jonović, Marko and Jugović, Branimir and Žuža, Milena and Đorđević, Verica and Milašinović, Nikola and Bugarski, Branko and Knežević-Jugović, Zorica",
year = "2022",
abstract = "The aim of this study was to investigate covalent immobilization of horseradish peroxidase (HRP) on magnetic nanoparticles (Mag) encapsulated in calcium alginate beads (MABs) for color degradation, combining easy and fast removal of biocatalyst from the reaction mixture due to its magnetic properties and strong binding due to surface alginate functional groups. MABs obtained by extrusion techniques were analyzed by optical microscopy, FEG-SEM and characterized regarding mechanical properties, magnetization and HRP binding. HRP with initial concentration of 10 mg/gcarrier was successfully covalently bonded on MABs (diameter ~1 mm, magnetite/alginate ratio 1:4), with protein loading of 8.9 mg/gcarrier, immobilization yield 96.9% and activity 32.8 U/g. Immobilized HRP on MABs (HRP-MABs) was then used to catalyze degradation of two anthraquinonic dyes, Acid Blue 225 (AB225) and Acid Violet 109 (AV109), as models for wastewater pollutants. HRP-MABs decolorized 77.3% and 76.1% of AV109 and AB225, respectively after 15 min under optimal conditions (0.097 mM H2O2, 200 mg of HRP-MABs (8.9 mg/gcarrier), 0.08 and 0.1 g/mg beads/dye ratio for AV109 and AB225, respectively). Biocatalyst was used for 7 repeated cycles retaining 75% and 51% of initial activity for AB225 and AV109, respectively, showing potential for use in large scale applications for colored wastewater treatment.",
publisher = "MDPI AG",
journal = "Polymers",
title = "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation",
pages = "2614",
volume = "14",
number = "13",
doi = "10.3390/polym14132614",
url = "https://hdl.handle.net/21.15107/rcub_dais_13155"
}
Jonović, M., Jugović, B., Žuža, M., Đorđević, V., Milašinović, N., Bugarski, B.,& Knežević-Jugović, Z.. (2022). Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation. in Polymers
MDPI AG., 14(13), 2614.
https://doi.org/10.3390/polym14132614
https://hdl.handle.net/21.15107/rcub_dais_13155
Jonović M, Jugović B, Žuža M, Đorđević V, Milašinović N, Bugarski B, Knežević-Jugović Z. Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation. in Polymers. 2022;14(13):2614.
doi:10.3390/polym14132614
https://hdl.handle.net/21.15107/rcub_dais_13155 .
Jonović, Marko, Jugović, Branimir, Žuža, Milena, Đorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614,
https://doi.org/10.3390/polym14132614 .,
https://hdl.handle.net/21.15107/rcub_dais_13155 .
6
6

The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass

Matijašević, Srđan; Grujić, Snežana; Nikolić, Jelena; Topalović, Vladimir; Savić, Veljko; Zildžović, Snežana; Labus, Nebojša

(2022)

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Zildžović, Snežana
AU  - Labus, Nebojša
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13580
AB  - The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.
T2  - Science of Sintering
T1  - The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass
SP  - 321
EP  - 334
VL  - 54
IS  - 3
DO  - 10.2298/SOS2203321M
UR  - https://hdl.handle.net/21.15107/rcub_dais_13580
ER  - 
@article{
author = "Matijašević, Srđan and Grujić, Snežana and Nikolić, Jelena and Topalović, Vladimir and Savić, Veljko and Zildžović, Snežana and Labus, Nebojša",
year = "2022",
abstract = "The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.",
journal = "Science of Sintering",
title = "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass",
pages = "321-334",
volume = "54",
number = "3",
doi = "10.2298/SOS2203321M",
url = "https://hdl.handle.net/21.15107/rcub_dais_13580"
}
Matijašević, S., Grujić, S., Nikolić, J., Topalović, V., Savić, V., Zildžović, S.,& Labus, N.. (2022). The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering, 54(3), 321-334.
https://doi.org/10.2298/SOS2203321M
https://hdl.handle.net/21.15107/rcub_dais_13580
Matijašević S, Grujić S, Nikolić J, Topalović V, Savić V, Zildžović S, Labus N. The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering. 2022;54(3):321-334.
doi:10.2298/SOS2203321M
https://hdl.handle.net/21.15107/rcub_dais_13580 .
Matijašević, Srđan, Grujić, Snežana, Nikolić, Jelena, Topalović, Vladimir, Savić, Veljko, Zildžović, Snežana, Labus, Nebojša, "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass" in Science of Sintering, 54, no. 3 (2022):321-334,
https://doi.org/10.2298/SOS2203321M .,
https://hdl.handle.net/21.15107/rcub_dais_13580 .

Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells

Stefanović, Milica; Lukić, Ivana; Vujančević, Jelena; Petrović, Rada; Janaćković, Đorđe

(Belgrade : Serbian Academy of Sciences and Arts, 2022)

TY  - CONF
AU  - Stefanović, Milica
AU  - Lukić, Ivana
AU  - Vujančević, Jelena
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13636
AB  - The organo-inorganic perovskites are extraordinary materials that have recently revolutionized the field of photovoltaics due to their low-cost fabrication and high optical absorption. In a short period, they reached great efficiency. Many parameters which affect the quality of perovskite films can be optimized, so the efficiency of these devices can be further improved. In perovskite solar cells, the perovskite layer is an active layer that absorbs the visible part of the spectrum, resulting in the formation of the electron-hole pair. To decrease the recombination of charge carriers, the construction of solar cells requires the existence of two additional layers in order to separate the holes and electrons. TiO2 could be used as an electron transport layer because its conduction band (CB) lies under the CB of perovskite. In that way, electrons diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure provides a one-dimensional transmission channel for the charge carriers, which resulting in faster carrier transport. Perovskite methylammonium lead bromide (MAPbBr3) was coupled with TiO2 nanotube arrays which were synthesized by anodization of Ti foil and annealed at 450 °C. The most used methods for deposition of perovskite materials on mesoporous and planar TiO2 are: one-step deposition, two-step sequential deposition, and vapor-assisted solution processing. Disadvantage of these methods is a small contact area between TiO2 and perovskite. The aim of this research was to increase the contact surface of the perovskite and TiO2 nanotubes by filling the nanotubes with the perovskite material in order to improve electron transport.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022
T1  - Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells
SP  - 188
EP  - 189
UR  - https://hdl.handle.net/21.15107/rcub_dais_13636
ER  - 
@conference{
author = "Stefanović, Milica and Lukić, Ivana and Vujančević, Jelena and Petrović, Rada and Janaćković, Đorđe",
year = "2022",
abstract = "The organo-inorganic perovskites are extraordinary materials that have recently revolutionized the field of photovoltaics due to their low-cost fabrication and high optical absorption. In a short period, they reached great efficiency. Many parameters which affect the quality of perovskite films can be optimized, so the efficiency of these devices can be further improved. In perovskite solar cells, the perovskite layer is an active layer that absorbs the visible part of the spectrum, resulting in the formation of the electron-hole pair. To decrease the recombination of charge carriers, the construction of solar cells requires the existence of two additional layers in order to separate the holes and electrons. TiO2 could be used as an electron transport layer because its conduction band (CB) lies under the CB of perovskite. In that way, electrons diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure provides a one-dimensional transmission channel for the charge carriers, which resulting in faster carrier transport. Perovskite methylammonium lead bromide (MAPbBr3) was coupled with TiO2 nanotube arrays which were synthesized by anodization of Ti foil and annealed at 450 °C. The most used methods for deposition of perovskite materials on mesoporous and planar TiO2 are: one-step deposition, two-step sequential deposition, and vapor-assisted solution processing. Disadvantage of these methods is a small contact area between TiO2 and perovskite. The aim of this research was to increase the contact surface of the perovskite and TiO2 nanotubes by filling the nanotubes with the perovskite material in order to improve electron transport.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022",
title = "Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells",
pages = "188-189",
url = "https://hdl.handle.net/21.15107/rcub_dais_13636"
}
Stefanović, M., Lukić, I., Vujančević, J., Petrović, R.,& Janaćković, Đ.. (2022). Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells. in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022
Belgrade : Serbian Academy of Sciences and Arts., 188-189.
https://hdl.handle.net/21.15107/rcub_dais_13636
Stefanović M, Lukić I, Vujančević J, Petrović R, Janaćković Đ. Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells. in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022. 2022;:188-189.
https://hdl.handle.net/21.15107/rcub_dais_13636 .
Stefanović, Milica, Lukić, Ivana, Vujančević, Jelena, Petrović, Rada, Janaćković, Đorđe, "Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells" in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022 (2022):188-189,
https://hdl.handle.net/21.15107/rcub_dais_13636 .

Corrosion behavior of copper in 3 % NaCl with addition of cynarae extract

Jokić, Bojan; Gvozdenović, Milica; Jovanović, Marijana; Jugović, Branimir; Grgur, Branimir

(Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM, 2022)

TY  - CONF
AU  - Jokić, Bojan
AU  - Gvozdenović, Milica
AU  - Jovanović, Marijana
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13649
AB  - In this work, corrosion behavior of cooper in corrosion media consisted of aerated aqueous electrolyte of 3% NaCl with addition of different amount of cynarae extract as green corrosion inhibitor, is presented. Techniques used in this study involved open circuit measurements, evaluation of charge transfer resistance and corrosion current density during exposure to corrosion environment. Also, electrochemical impedance spectroscopy measurements are presented. Potentiodymamic polarization curves were also used for the evaluation of the corrosion current density and corrosion potential of coper in corrosion media. Based on these results, it was concluded that the satisfactory results of corrosion inhibition exceeding 70 % were obtained with small amount of only 37*10-2 of mas. % of cynarae extract, based on open circuit behavior which involved decrease of the open circuit potentials of copper in the presence of cynarae extract it was concluded that this extract served as cathodic inhibitor.
AB  - Koroziono ponašanje bakra u aerisanom vodenom rastvoru 3% NaCl bez i sa dodatkom različite količine ekstrakta cynarae (artičoka) je ispitano u cilju evaluacije inhibicije korozije bakra i mogućnosti primene ekstrakta cynarae kao zelenog inhibitora korozije. Za evaluaciju efikasnosti zaštite korišćene su uobičajene eksperimntalne tehnike praćenja potencija otvorenog kola, otpornosti prenosa naelektrisanja i struje korozije u vremenu kao i spektroskopija elektrohemijske impedancije. Ustanovljeno je da veoma male količine ovog inhibitora od svega 37*10-2 mas. % pružaju zadovoljavajuću zaštitu od korozije u 3% NaCl. Na osnovu smanjenja potencijala otvorenog kola bakra u prisustvu ekstrakta cynarae, ustanovljeno je da je inhibitor katodnog tipa.
PB  - Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia
T1  - Corrosion behavior of copper in 3 % NaCl with addition of cynarae extract
T1  - Koroziono ponašanje bakra u 3% rastvoru NaCl sa dodatkom ekstrakta cynarae
SP  - poster-159
EP  - poster-164
UR  - https://hdl.handle.net/21.15107/rcub_dais_13649
ER  - 
@conference{
author = "Jokić, Bojan and Gvozdenović, Milica and Jovanović, Marijana and Jugović, Branimir and Grgur, Branimir",
year = "2022",
abstract = "In this work, corrosion behavior of cooper in corrosion media consisted of aerated aqueous electrolyte of 3% NaCl with addition of different amount of cynarae extract as green corrosion inhibitor, is presented. Techniques used in this study involved open circuit measurements, evaluation of charge transfer resistance and corrosion current density during exposure to corrosion environment. Also, electrochemical impedance spectroscopy measurements are presented. Potentiodymamic polarization curves were also used for the evaluation of the corrosion current density and corrosion potential of coper in corrosion media. Based on these results, it was concluded that the satisfactory results of corrosion inhibition exceeding 70 % were obtained with small amount of only 37*10-2 of mas. % of cynarae extract, based on open circuit behavior which involved decrease of the open circuit potentials of copper in the presence of cynarae extract it was concluded that this extract served as cathodic inhibitor., Koroziono ponašanje bakra u aerisanom vodenom rastvoru 3% NaCl bez i sa dodatkom različite količine ekstrakta cynarae (artičoka) je ispitano u cilju evaluacije inhibicije korozije bakra i mogućnosti primene ekstrakta cynarae kao zelenog inhibitora korozije. Za evaluaciju efikasnosti zaštite korišćene su uobičajene eksperimntalne tehnike praćenja potencija otvorenog kola, otpornosti prenosa naelektrisanja i struje korozije u vremenu kao i spektroskopija elektrohemijske impedancije. Ustanovljeno je da veoma male količine ovog inhibitora od svega 37*10-2 mas. % pružaju zadovoljavajuću zaštitu od korozije u 3% NaCl. Na osnovu smanjenja potencijala otvorenog kola bakra u prisustvu ekstrakta cynarae, ustanovljeno je da je inhibitor katodnog tipa.",
publisher = "Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia",
title = "Corrosion behavior of copper in 3 % NaCl with addition of cynarae extract, Koroziono ponašanje bakra u 3% rastvoru NaCl sa dodatkom ekstrakta cynarae",
pages = "poster-159-poster-164",
url = "https://hdl.handle.net/21.15107/rcub_dais_13649"
}
Jokić, B., Gvozdenović, M., Jovanović, M., Jugović, B.,& Grgur, B.. (2022). Corrosion behavior of copper in 3 % NaCl with addition of cynarae extract. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia
Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., poster-159-poster-164.
https://hdl.handle.net/21.15107/rcub_dais_13649
Jokić B, Gvozdenović M, Jovanović M, Jugović B, Grgur B. Corrosion behavior of copper in 3 % NaCl with addition of cynarae extract. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia. 2022;:poster-159-poster-164.
https://hdl.handle.net/21.15107/rcub_dais_13649 .
Jokić, Bojan, Gvozdenović, Milica, Jovanović, Marijana, Jugović, Branimir, Grgur, Branimir, "Corrosion behavior of copper in 3 % NaCl with addition of cynarae extract" in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia (2022):poster-159-poster-164,
https://hdl.handle.net/21.15107/rcub_dais_13649 .

Capacitive properties of electrochemically synthesized polyaniline on graphite electrode

Gojgić, Jelena; Petrović, Miloš; Jugović, Branimir; Grgur, Branimir; Jokić, Bojan; Gvozdenović, Milica

(Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM, 2022)

TY  - CONF
AU  - Gojgić, Jelena
AU  - Petrović, Miloš
AU  - Jugović, Branimir
AU  - Grgur, Branimir
AU  - Jokić, Bojan
AU  - Gvozdenović, Milica
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13650
AB  - Intrinsically conducting polymers, especially polyaniline (PANI), are widely investigated in the field of energy storage and conversion due to the highly reversible electrochemistry of doping/dedoping. These reactions are responsible for PANI’s high capacitance, often reported as pseudocapacitance. In this work, PANI electrodes were obtained by electrochemical polymerization of aniline monomer, with different polymerization charges ranging between 0.125 and 1.0 mA cm-2, on a graphite electrode, at the constant current density of 2.0 mA cm-2. The electrolyte used in this study consisted of 1.0 mol dm-3 H2SO4 and 0.2 mol dm-3 aniline. Electrochemical characterization of the PANI electrode involved cyclic voltammetry, chronopotentiometric charge/discharge and electrochemical impedance spectroscopy at constant potentials. Specific capacitance was determined from these techniques following the procedure for pseudocapacitive electrodes. After 250 cycles of charge/discharge with the current density of 10 mA cm-2, only 7 % of the capacitance was lost, indicating good stability of PANI that likely originates from its structure comprising a shared divalent sulfate ion between two monomer units.
AB  - Elektroprovodni polimeri, prvenstveno polianilin (PANI), su intenzivno proučavani u oblasti konverzije i skladištenja električne energije, zahvaljujući visokoj reverzibilnosti reakcije dopovanja/dedopovanje. Ove reakcije su odgovorne za visoku specifičnu kapacitivnost PANI koja se često u literaturi označava kao pseudokapacitivnost. U ovom radu, elektrode na bazi PANI dobijene su oksidativnom elektrohemijskom polimerizacijom anilina različitim kapacitetima polimerizacije u opsegu od 0,125 do 1,0 mA cm-2 na elektrodi od grafita u galvanostatskim uslovima gustinom struje od 2,0 mA cm-2. Kao elektrolit korišćen je vodeni rastvor 1,0 mol dm-3 H2SO4 uz dodatak 0,2 mol dm-3 anilina. Za elektrohemijsku karakterizaciju elektrode na bazi PANI korišćene su tehnike ciklične voltametrije, hronopotenciometrijskog snimanja krivih punjenja/pražnjenja i spektroskopija elektrohemijske impedanse na konstantnom potencijalu. Specifična kapacitivnost PANI elektrode određivana je na način uobičajen za pseudokapacitivne elektrode. Na osnovu 250 sukcesivnih ciklusa punjenja i pražnjenja gustinom struje od 10 mA cm-2, utvrđeno je gubitak kapacitivnosti od svega 7%, što se verovatno može dovesti u vezu sa povećanom stabilnošću PANI usled strukture koja podrazumeva deljenje dvovalentnog sulfatnog jona između dve jedinice monomera.
PB  - Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia
T1  - Capacitive properties of electrochemically synthesized polyaniline on graphite electrode
T1  - Kapacitivna svojstva elekrode na bazi elektrohemijski formiranog polianilina
SP  - poster-151
UR  - https://hdl.handle.net/21.15107/rcub_dais_13650
ER  - 
@conference{
author = "Gojgić, Jelena and Petrović, Miloš and Jugović, Branimir and Grgur, Branimir and Jokić, Bojan and Gvozdenović, Milica",
year = "2022",
abstract = "Intrinsically conducting polymers, especially polyaniline (PANI), are widely investigated in the field of energy storage and conversion due to the highly reversible electrochemistry of doping/dedoping. These reactions are responsible for PANI’s high capacitance, often reported as pseudocapacitance. In this work, PANI electrodes were obtained by electrochemical polymerization of aniline monomer, with different polymerization charges ranging between 0.125 and 1.0 mA cm-2, on a graphite electrode, at the constant current density of 2.0 mA cm-2. The electrolyte used in this study consisted of 1.0 mol dm-3 H2SO4 and 0.2 mol dm-3 aniline. Electrochemical characterization of the PANI electrode involved cyclic voltammetry, chronopotentiometric charge/discharge and electrochemical impedance spectroscopy at constant potentials. Specific capacitance was determined from these techniques following the procedure for pseudocapacitive electrodes. After 250 cycles of charge/discharge with the current density of 10 mA cm-2, only 7 % of the capacitance was lost, indicating good stability of PANI that likely originates from its structure comprising a shared divalent sulfate ion between two monomer units., Elektroprovodni polimeri, prvenstveno polianilin (PANI), su intenzivno proučavani u oblasti konverzije i skladištenja električne energije, zahvaljujući visokoj reverzibilnosti reakcije dopovanja/dedopovanje. Ove reakcije su odgovorne za visoku specifičnu kapacitivnost PANI koja se često u literaturi označava kao pseudokapacitivnost. U ovom radu, elektrode na bazi PANI dobijene su oksidativnom elektrohemijskom polimerizacijom anilina različitim kapacitetima polimerizacije u opsegu od 0,125 do 1,0 mA cm-2 na elektrodi od grafita u galvanostatskim uslovima gustinom struje od 2,0 mA cm-2. Kao elektrolit korišćen je vodeni rastvor 1,0 mol dm-3 H2SO4 uz dodatak 0,2 mol dm-3 anilina. Za elektrohemijsku karakterizaciju elektrode na bazi PANI korišćene su tehnike ciklične voltametrije, hronopotenciometrijskog snimanja krivih punjenja/pražnjenja i spektroskopija elektrohemijske impedanse na konstantnom potencijalu. Specifična kapacitivnost PANI elektrode određivana je na način uobičajen za pseudokapacitivne elektrode. Na osnovu 250 sukcesivnih ciklusa punjenja i pražnjenja gustinom struje od 10 mA cm-2, utvrđeno je gubitak kapacitivnosti od svega 7%, što se verovatno može dovesti u vezu sa povećanom stabilnošću PANI usled strukture koja podrazumeva deljenje dvovalentnog sulfatnog jona između dve jedinice monomera.",
publisher = "Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia",
title = "Capacitive properties of electrochemically synthesized polyaniline on graphite electrode, Kapacitivna svojstva elekrode na bazi elektrohemijski formiranog polianilina",
pages = "poster-151",
url = "https://hdl.handle.net/21.15107/rcub_dais_13650"
}
Gojgić, J., Petrović, M., Jugović, B., Grgur, B., Jokić, B.,& Gvozdenović, M.. (2022). Capacitive properties of electrochemically synthesized polyaniline on graphite electrode. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia
Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., poster-151.
https://hdl.handle.net/21.15107/rcub_dais_13650
Gojgić J, Petrović M, Jugović B, Grgur B, Jokić B, Gvozdenović M. Capacitive properties of electrochemically synthesized polyaniline on graphite electrode. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia. 2022;:poster-151.
https://hdl.handle.net/21.15107/rcub_dais_13650 .
Gojgić, Jelena, Petrović, Miloš, Jugović, Branimir, Grgur, Branimir, Jokić, Bojan, Gvozdenović, Milica, "Capacitive properties of electrochemically synthesized polyaniline on graphite electrode" in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia (2022):poster-151,
https://hdl.handle.net/21.15107/rcub_dais_13650 .

Electrical properties of electrochemically co-polymerized aniline and sulphanilic acid

Novaković, Nikola; Petrović, Miloš; Jugović, Branimir; Grgur, Branimir; Gvozdenović, Milica

(Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM, 2022)

TY  - CONF
AU  - Novaković, Nikola
AU  - Petrović, Miloš
AU  - Jugović, Branimir
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13651
AB  - Electrochemical synthesis of poly(aniline-co-(sulfanilic acid)) was performed on a graphite electrode with constant current densities from an aqueous electrolyte containing 1.0 mol dm-3 H2SO4 and 0.25 mol dm-3 monomers with different ratios of aniline and sulfanilic acid. Optimal conditions for copolymerization were set to the current density of 0.75 mA cm-2 and the electrolyte containing 0.15 mol dm-3 aniline and 0.10 mol dm-3 sulfanilic acid. Electrochemical characterization of the poly(aniline-co-(sulfanilic acid)) electrode was performed using cyclic voltammetry and galvanostatic charge/discharge techniques. Electrical properties such as specific power and specific energy at different discharge currents were also determined. Based on the Ragon plot, it was observed that the poly(aniline-co-(sulfanilic acid)) electrode exhibited battery features at low discharge currents. In contrast, it was possible to achieve specific power of supercapacitors at high discharge currents. Moreover, after 4000 cycles of charge/discharge poly(aniline-co-(sulfanilic acid)), capacity retention exceeding 90 % was obtained.
AB  - Elektrohemijska kopolimerizacija anilina i sulfanilne kiseline ostvarena je u galvanostatskim uslovima različitim gustinama struje na grafitnoj elektrodi. Kao elektrolit korišćen je vodeni rastvor 1.0 mol dm-3 H2SO4 sa dodatkom 0.25 mol dm-3 monomera različitog odnosa anilina i sulfanilne kiseline. Izabrani su optimalni uslovi za sintezu u pogledu gustine struje polimerizacije od 0.75 mA cm-2 i sastava elektrolita koji je sadržavao 0.15 mol dm-3 anilina i 0.10 mol dm-3 sulfanilne kiseline. Za elektrohemijsku karakterizaciju elektrode na bazi kopolimera anilina i sulfanilne kiseline korišćene su tehnike ciklične voltametrije i snimanja hronopotenciometrijskih krivih punjenja/pražnjenja. Na osnovu krivih pražnjenja procenjene su električne karakteristike ove elektrode: specifična energija i specifična snaga. Na osnovu Ragonovog dijagrama pokazano je da elektroda na bazi kopolimera anilina i sulfanilne kiseline poseduje baterijska svojstva pri niskim strujama pražnjenja, dok se pri visokim strujama pražnjenja ponaša kao elektroda superkondenzatora. Takođe, ova elektroda je nakon 4000 ciklusa punjenja i pražnjenja zadržala preko 90 % početnog kapaciteta.
PB  - Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia
T1  - Electrical properties of electrochemically co-polymerized aniline and sulphanilic acid
T1  - Električna svojstva elektrohemijski kopolimerizovanog anilina i sulfanilne kiseline
SP  - oral-95
EP  - oral-100
UR  - https://hdl.handle.net/21.15107/rcub_dais_13651
ER  - 
@conference{
author = "Novaković, Nikola and Petrović, Miloš and Jugović, Branimir and Grgur, Branimir and Gvozdenović, Milica",
year = "2022",
abstract = "Electrochemical synthesis of poly(aniline-co-(sulfanilic acid)) was performed on a graphite electrode with constant current densities from an aqueous electrolyte containing 1.0 mol dm-3 H2SO4 and 0.25 mol dm-3 monomers with different ratios of aniline and sulfanilic acid. Optimal conditions for copolymerization were set to the current density of 0.75 mA cm-2 and the electrolyte containing 0.15 mol dm-3 aniline and 0.10 mol dm-3 sulfanilic acid. Electrochemical characterization of the poly(aniline-co-(sulfanilic acid)) electrode was performed using cyclic voltammetry and galvanostatic charge/discharge techniques. Electrical properties such as specific power and specific energy at different discharge currents were also determined. Based on the Ragon plot, it was observed that the poly(aniline-co-(sulfanilic acid)) electrode exhibited battery features at low discharge currents. In contrast, it was possible to achieve specific power of supercapacitors at high discharge currents. Moreover, after 4000 cycles of charge/discharge poly(aniline-co-(sulfanilic acid)), capacity retention exceeding 90 % was obtained., Elektrohemijska kopolimerizacija anilina i sulfanilne kiseline ostvarena je u galvanostatskim uslovima različitim gustinama struje na grafitnoj elektrodi. Kao elektrolit korišćen je vodeni rastvor 1.0 mol dm-3 H2SO4 sa dodatkom 0.25 mol dm-3 monomera različitog odnosa anilina i sulfanilne kiseline. Izabrani su optimalni uslovi za sintezu u pogledu gustine struje polimerizacije od 0.75 mA cm-2 i sastava elektrolita koji je sadržavao 0.15 mol dm-3 anilina i 0.10 mol dm-3 sulfanilne kiseline. Za elektrohemijsku karakterizaciju elektrode na bazi kopolimera anilina i sulfanilne kiseline korišćene su tehnike ciklične voltametrije i snimanja hronopotenciometrijskih krivih punjenja/pražnjenja. Na osnovu krivih pražnjenja procenjene su električne karakteristike ove elektrode: specifična energija i specifična snaga. Na osnovu Ragonovog dijagrama pokazano je da elektroda na bazi kopolimera anilina i sulfanilne kiseline poseduje baterijska svojstva pri niskim strujama pražnjenja, dok se pri visokim strujama pražnjenja ponaša kao elektroda superkondenzatora. Takođe, ova elektroda je nakon 4000 ciklusa punjenja i pražnjenja zadržala preko 90 % početnog kapaciteta.",
publisher = "Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia",
title = "Electrical properties of electrochemically co-polymerized aniline and sulphanilic acid, Električna svojstva elektrohemijski kopolimerizovanog anilina i sulfanilne kiseline",
pages = "oral-95-oral-100",
url = "https://hdl.handle.net/21.15107/rcub_dais_13651"
}
Novaković, N., Petrović, M., Jugović, B., Grgur, B.,& Gvozdenović, M.. (2022). Electrical properties of electrochemically co-polymerized aniline and sulphanilic acid. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia
Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., oral-95-oral-100.
https://hdl.handle.net/21.15107/rcub_dais_13651
Novaković N, Petrović M, Jugović B, Grgur B, Gvozdenović M. Electrical properties of electrochemically co-polymerized aniline and sulphanilic acid. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia. 2022;:oral-95-oral-100.
https://hdl.handle.net/21.15107/rcub_dais_13651 .
Novaković, Nikola, Petrović, Miloš, Jugović, Branimir, Grgur, Branimir, Gvozdenović, Milica, "Electrical properties of electrochemically co-polymerized aniline and sulphanilic acid" in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings = Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XXIII YuCorr International Conference = XXIII YuCorr Međunarodna konferencija, May 16-19, 2022, Divčibare, Serbia (2022):oral-95-oral-100,
https://hdl.handle.net/21.15107/rcub_dais_13651 .

Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior

Gojgić, Jelena; Petrović, Miloš; Jugović, Branimir; Jokić, Bojan; Grgur, Branimir; Gvozdenović, Milica

(2022)

TY  - JOUR
AU  - Gojgić, Jelena
AU  - Petrović, Miloš
AU  - Jugović, Branimir
AU  - Jokić, Bojan
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13496
AB  - Polyaniline (PANI), due to its highly reversible electrochemistry with superior energy storage and delivery characteristics, is considered as an electrode material in batteries, capacitors, and hybrid systems. We used a facile electrochemical synthesis for the formation of the PANI electrode using galvanostatic polymerization of aniline on the graphite electrode at the current density of 2.0 mA cm−2 from the aqueous electrolyte containing 0.25 mol dm−3 aniline and 1.0 mol dm−3 H2SO4. Electrochemical and electrical characterization suggested excellent energy storage features of the PANI electrode in a three-electrode system with specific energy up to 53 Wh kg−1 and specific power up to 7600 W kg−1. After 2000 successive charge/discharge cycles at 9.5 Ag−1, the PANI electrode retained 95% of the initial capacity, with practically unaltered Coulombic efficiency of nearly 98%, providing a good base for future studies and practical applications.
T2  - Polymers
T2  - Polymers
T1  - Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior
SP  - 5365
VL  - 14
IS  - 24
DO  - 10.3390/polym14245365
UR  - https://hdl.handle.net/21.15107/rcub_dais_13496
ER  - 
@article{
author = "Gojgić, Jelena and Petrović, Miloš and Jugović, Branimir and Jokić, Bojan and Grgur, Branimir and Gvozdenović, Milica",
year = "2022",
abstract = "Polyaniline (PANI), due to its highly reversible electrochemistry with superior energy storage and delivery characteristics, is considered as an electrode material in batteries, capacitors, and hybrid systems. We used a facile electrochemical synthesis for the formation of the PANI electrode using galvanostatic polymerization of aniline on the graphite electrode at the current density of 2.0 mA cm−2 from the aqueous electrolyte containing 0.25 mol dm−3 aniline and 1.0 mol dm−3 H2SO4. Electrochemical and electrical characterization suggested excellent energy storage features of the PANI electrode in a three-electrode system with specific energy up to 53 Wh kg−1 and specific power up to 7600 W kg−1. After 2000 successive charge/discharge cycles at 9.5 Ag−1, the PANI electrode retained 95% of the initial capacity, with practically unaltered Coulombic efficiency of nearly 98%, providing a good base for future studies and practical applications.",
journal = "Polymers, Polymers",
title = "Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior",
pages = "5365",
volume = "14",
number = "24",
doi = "10.3390/polym14245365",
url = "https://hdl.handle.net/21.15107/rcub_dais_13496"
}
Gojgić, J., Petrović, M., Jugović, B., Jokić, B., Grgur, B.,& Gvozdenović, M.. (2022). Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior. in Polymers, 14(24), 5365.
https://doi.org/10.3390/polym14245365
https://hdl.handle.net/21.15107/rcub_dais_13496
Gojgić J, Petrović M, Jugović B, Jokić B, Grgur B, Gvozdenović M. Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior. in Polymers. 2022;14(24):5365.
doi:10.3390/polym14245365
https://hdl.handle.net/21.15107/rcub_dais_13496 .
Gojgić, Jelena, Petrović, Miloš, Jugović, Branimir, Jokić, Bojan, Grgur, Branimir, Gvozdenović, Milica, "Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior" in Polymers, 14, no. 24 (2022):5365,
https://doi.org/10.3390/polym14245365 .,
https://hdl.handle.net/21.15107/rcub_dais_13496 .
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