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Stojanović, Zoran

Link to this page

Authority KeyName Variants
orcid::0000-0002-5989-0031
  • Stojanović, Zoran (1)
  • Stojanović, Zoran S. (63)
Projects
Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou
United States National Institutes of Health (NIH) / National Institute of Dental and Craniofacial Research (NIDCR), Grant K99-DE021416 Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine
Bilateral cooperation program between the Republic of Serbia and the Republic of Slovenia, Project BI-RS/16-17-030 The synthesis of aminoquinoline-based antimalarials and botulinum neurotoxin A inhibitors
Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology Microbial diversity study and characterization of beneficial environmental microorganisms
Physics and Chemistry with Ion Beams Magnetic and radionuclide labeled nanostructured materials for medical applications
Korean Institute of Science and Technology - Institute of Technical Science of SASA joint research project Advanced Materials for Biomedical Applications National Research Foundation of Korea - R11-2008-0061852
Virtual human osteoarticular system and its application in preclinical and clinical practice Biokompatibilnost i mogućnosti primene biomaterijala na bazi hidroksiapatita i biopolimera u tkivnoj reparaciji - eksperimentalna i klinička studija
Korea government (MSIP), 2008-0061891 Korea Institute of Science and Technology (KIST), 2V03130
Korea Institute of Science and Technology (KIST), 2Z03720 National Research Foundation of Korea (NRF)

Author's Bibliography

Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents

Ignjatović, Nenad; Mančić, Lidija; Vuković, Marina; Stojanović, Zoran S.; Nikolić, Marko G.; Škapin, Srečo Davor; Jovanović, Sonja; Veselinović, Ljiljana; Lazić, Snežana; Marković, Smilja; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2019)

TY  - CONF
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Vuković, Marina
AU  - Stojanović, Zoran S.
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Jovanović, Sonja
AU  - Veselinović, Ljiljana
AU  - Lazić, Snežana
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6676
AB  - Hydroxyapatite (HAp) has been widely used as bone reconstruction materials due to their similarity to bone tissue. The improvement of HAp properties was achieved by doping its crystal lattice with different ions. Lanthanides, i.e. Rare Earth Elements (RE) are also suitable for doping HAp. The aim of the presented research was to investigate the possibility of creating lumino-magnetic particles of HAp doped with gadolinium (Gd3+) ions and co-doped with ytterbium/thulium (Yb3+/Tm3+) or europium (Eu3+) ions for potential use in multimodal imaging (MI). Pure HAp (Ca5(PO4)3(OH)), magnetic HAp:Gd (Ca4.85Gd0.15(PO4)3(OH)), and lumino-magnetic HAp:Gd/Yb/Tm (Ca4.85Gd0.03Yb0.1Tm0.02(PO4)3(OH)) and HAp:Gd/Eu (Ca4.94Gd0.02Eu0.04(PO4)3(OH)) particles were synthesized using emulsification process and hydrothermal processing. All synthesized particles had an elongated shape and exhibited a paramagnetic behavior. Reduction of the unit cell volume as a result of replacement of Ca2+ ions by ions with a smaller ionic radius (Gd3+, Yb3+, Tm3+, Eu3+) confirmed by using XRD and Rietveld refined plots. The energy band gap values of the synthesized samples range from 4.93 to 3.18 eV and decrease in the following order: HAp:Gd >HAp>HAp:Gd/Eu>HAp:Gd/Yb/Tm. The results of photoluminescence emission spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu particles showed characteristic transitions of Tm3+ and Eu3+, respectively.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents
SP  - 76
EP  - 76
ER  - 
@conference{
author = "Ignjatović, Nenad and Mančić, Lidija and Vuković, Marina and Stojanović, Zoran S. and Nikolić, Marko G. and Škapin, Srečo Davor and Jovanović, Sonja and Veselinović, Ljiljana and Lazić, Snežana and Marković, Smilja and Uskoković, Dragan",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6676",
abstract = "Hydroxyapatite (HAp) has been widely used as bone reconstruction materials due to their similarity to bone tissue. The improvement of HAp properties was achieved by doping its crystal lattice with different ions. Lanthanides, i.e. Rare Earth Elements (RE) are also suitable for doping HAp. The aim of the presented research was to investigate the possibility of creating lumino-magnetic particles of HAp doped with gadolinium (Gd3+) ions and co-doped with ytterbium/thulium (Yb3+/Tm3+) or europium (Eu3+) ions for potential use in multimodal imaging (MI). Pure HAp (Ca5(PO4)3(OH)), magnetic HAp:Gd (Ca4.85Gd0.15(PO4)3(OH)), and lumino-magnetic HAp:Gd/Yb/Tm (Ca4.85Gd0.03Yb0.1Tm0.02(PO4)3(OH)) and HAp:Gd/Eu (Ca4.94Gd0.02Eu0.04(PO4)3(OH)) particles were synthesized using emulsification process and hydrothermal processing. All synthesized particles had an elongated shape and exhibited a paramagnetic behavior. Reduction of the unit cell volume as a result of replacement of Ca2+ ions by ions with a smaller ionic radius (Gd3+, Yb3+, Tm3+, Eu3+) confirmed by using XRD and Rietveld refined plots. The energy band gap values of the synthesized samples range from 4.93 to 3.18 eV and decrease in the following order: HAp:Gd >HAp>HAp:Gd/Eu>HAp:Gd/Yb/Tm. The results of photoluminescence emission spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu particles showed characteristic transitions of Tm3+ and Eu3+, respectively.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents",
pages = "76-76"
}

Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging

Ignjatović, Nenad; Mančić, Lidija; Vuković, Marina; Stojanović, Zoran; Nikolić, Marko G.; Škapin, Srečo Davor; Jovanović, Sonja; Veselinović, Ljiljana; Uskoković, Vuk; Lazić, Snežana; Marković, Smilja; Lazarević, Miloš M.; Uskoković, Dragan

(Springer Nature, 2019)

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Vuković, Marina
AU  - Stojanović, Zoran
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Jovanović, Sonja
AU  - Veselinović, Ljiljana
AU  - Uskoković, Vuk
AU  - Lazić, Snežana
AU  - Marković, Smilja
AU  - Lazarević, Miloš M.
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://www.nature.com/articles/s41598-019-52885-0
UR  - http://dais.sanu.ac.rs/123456789/6950
AB  - Taking advantage of the flexibility of the apatite structure, nano- and micro-particles of hydroxyapatite (HAp) were doped with different combinations of rare earth ions (RE3+ = Gd, Eu, Yb, Tm) to achieve a synergy among their magnetic and optical properties and to enable their application in preventive medicine, particularly diagnostics based on multimodal imaging. All powders were synthesized through hydrothermal processing at T ≤ 200 °C. An X-ray powder diffraction analysis showed that all powders crystallized in P63/m space group of the hexagonal crystal structure. The refined unit-cell parameters reflected a decrease in the unit cell volume as a result of the partial substitution of Ca2+ with smaller RE3+ ions at both cation positions. The FTIR analysis additionally suggested that a synergy may exist solely in the triply doped system, where the lattice symmetry and vibration modes become more coherent than in the singly or doubly doped systems. HAp:RE3+ optical characterization revealed a change in the energy band gap and the appearance of a weak blue luminescence (λex = 370 nm) due to an increased concentration of defects. The “up”- and the “down”-conversion spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders showed characteristic transitions of Tm3+ and Eu3+, respectively. Furthermore, in contrast to diamagnetic HAp, all HAp:RE3+ powders exhibited paramagnetic behavior. Cell viability tests of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders in human dental pulp stem cell cultures indicated their good biocompatibility.
PB  - Springer Nature
T2  - Scientific Reports
T1  - Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging
SP  - 1
EP  - 15
VL  - 9
IS  - 1
DO  - 10.1038/s41598-019-52885-0
ER  - 
@article{
author = "Ignjatović, Nenad and Mančić, Lidija and Vuković, Marina and Stojanović, Zoran and Nikolić, Marko G. and Škapin, Srečo Davor and Jovanović, Sonja and Veselinović, Ljiljana and Uskoković, Vuk and Lazić, Snežana and Marković, Smilja and Lazarević, Miloš M. and Uskoković, Dragan",
year = "2019",
url = "https://www.nature.com/articles/s41598-019-52885-0, http://dais.sanu.ac.rs/123456789/6950",
abstract = "Taking advantage of the flexibility of the apatite structure, nano- and micro-particles of hydroxyapatite (HAp) were doped with different combinations of rare earth ions (RE3+ = Gd, Eu, Yb, Tm) to achieve a synergy among their magnetic and optical properties and to enable their application in preventive medicine, particularly diagnostics based on multimodal imaging. All powders were synthesized through hydrothermal processing at T ≤ 200 °C. An X-ray powder diffraction analysis showed that all powders crystallized in P63/m space group of the hexagonal crystal structure. The refined unit-cell parameters reflected a decrease in the unit cell volume as a result of the partial substitution of Ca2+ with smaller RE3+ ions at both cation positions. The FTIR analysis additionally suggested that a synergy may exist solely in the triply doped system, where the lattice symmetry and vibration modes become more coherent than in the singly or doubly doped systems. HAp:RE3+ optical characterization revealed a change in the energy band gap and the appearance of a weak blue luminescence (λex = 370 nm) due to an increased concentration of defects. The “up”- and the “down”-conversion spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders showed characteristic transitions of Tm3+ and Eu3+, respectively. Furthermore, in contrast to diamagnetic HAp, all HAp:RE3+ powders exhibited paramagnetic behavior. Cell viability tests of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders in human dental pulp stem cell cultures indicated their good biocompatibility.",
publisher = "Springer Nature",
journal = "Scientific Reports",
title = "Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging",
pages = "1-15",
volume = "9",
number = "1",
doi = "10.1038/s41598-019-52885-0"
}
1
12
7
10

Supporting Information for DOI: 10.1055/s-0036-1590892

Ajdačić, Vladimir; Nikolić, Andrea; Simić, Stefan; Manojlović, Dragan D.; Stojanović, Zoran S.; Nikodinović Runić, Jasmina; Opsenica, Igor

(2018)

@misc{
author = "Ajdačić, Vladimir and Nikolić, Andrea and Simić, Stefan and Manojlović, Dragan D. and Stojanović, Zoran S. and Nikodinović Runić, Jasmina and Opsenica, Igor",
year = "2018",
url = "https://www.thieme-connect.de/media/synthesis/201801/supmat/sup_ss-2017-t0452-op_10-1055_s-0036-1590892.pdf, http://dais.sanu.ac.rs/123456789/3773",
abstract = "1H NMR and 13C NMR Spectra of Products; GC‒MS",
journal = "Synthesis",
title = "Supporting Information for DOI: 10.1055/s-0036-1590892",
volume = "50",
number = "01"
}

Decarbonylation of Aromatic Aldehydes and Dehalogenation of Aryl Halides Using Maghemite-Supported Palladium Catalyst

Ajdačić, Vladimir; Nikolić, Andrea; Simić, Stefan; Manojlović, Dragan D.; Stojanović, Zoran S.; Nikodinović Runić, Jasmina; Opsenica, Igor M.

(Stuttgart : Georg Thieme Verlag KG, 2018)

TY  - JOUR
AU  - Ajdačić, Vladimir
AU  - Nikolić, Andrea
AU  - Simić, Stefan
AU  - Manojlović, Dragan D.
AU  - Stojanović, Zoran S.
AU  - Nikodinović Runić, Jasmina
AU  - Opsenica, Igor M.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3746
AB  - A facile decarbonylation reaction of a variety of aromatic and heteroaromatic aldehydes using maghemite-supported palladium catalyst has been developed. The magnetic properties of catalyst facilitated an easy and efficient recovery of the catalyst from the reaction mixture using an external magnet. It was found that the catalyst could be reused up to four consecutive catalytic runs without a significant change in activity. In addition, the catalyst was also very effective in the dehalogenation of aryl halides. This is the first report on efficient utilization of directly immobilized Pd on maghemite in decarbonylation and dehalogenation reactions. © Georg Thieme Verlag Stuttgart.New York.
PB  - Stuttgart : Georg Thieme Verlag KG
T2  - Synthesis (Germany)
T1  - Decarbonylation of Aromatic Aldehydes and Dehalogenation of Aryl Halides Using Maghemite-Supported Palladium Catalyst
EP  - 126
VL  - 50
IS  - 1
DO  - 10.1055/s-0036-1590892
ER  - 
@article{
author = "Ajdačić, Vladimir and Nikolić, Andrea and Simić, Stefan and Manojlović, Dragan D. and Stojanović, Zoran S. and Nikodinović Runić, Jasmina and Opsenica, Igor M.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3746",
abstract = "A facile decarbonylation reaction of a variety of aromatic and heteroaromatic aldehydes using maghemite-supported palladium catalyst has been developed. The magnetic properties of catalyst facilitated an easy and efficient recovery of the catalyst from the reaction mixture using an external magnet. It was found that the catalyst could be reused up to four consecutive catalytic runs without a significant change in activity. In addition, the catalyst was also very effective in the dehalogenation of aryl halides. This is the first report on efficient utilization of directly immobilized Pd on maghemite in decarbonylation and dehalogenation reactions. © Georg Thieme Verlag Stuttgart.New York.",
publisher = "Stuttgart : Georg Thieme Verlag KG",
journal = "Synthesis (Germany)",
title = "Decarbonylation of Aromatic Aldehydes and Dehalogenation of Aryl Halides Using Maghemite-Supported Palladium Catalyst",
pages = "126",
volume = "50",
number = "1",
doi = "10.1055/s-0036-1590892"
}
3
5
6

Rare earth dual-doped multifunctional hydroxyapatite particles for potential application in preventive medicine

Ignjatović, Nenad; Mančić, Lidija; Stojanović, Zoran S.; Nikolić, Marko G.; Škapin, Srečo Davor; Veselinović, Ljiljana; Uskoković, Dragan

(2018)

TY  - CONF
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Stojanović, Zoran S.
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Veselinović, Ljiljana
AU  - Uskoković, Dragan
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4064
AB  - Composite biomaterials based on nano hydroxyapatite (HAp) are the subject of numerous studies in reconstructive medicine. Multifunctional and nanoparticulate systems based on HAp and biodegradable polymers are successfully designed as systems for controlled and systemic drug delivery suitable for use in reconstructive medicine [1, 2]. Thanks to the stability and flexibility of the apatite structure, Ca ions can be replaced with various elements (Zn, Sr, Mg, Co, etc.) [3, 4]. Doping the apatite structure enables potential application of this material in preventive medicine, too. Multimodal imaging (MI) is a new and promising technique for improved diagnosis and it is patient-friendly because it saves time. MI has recently attracted much attention due to the advantageous combination of various imaging modalities, such as computer tomography, photoluminescence and magnetic resonance imaging.
T1  - Rare earth dual-doped multifunctional hydroxyapatite particles for potential application in preventive medicine
ER  - 
@conference{
author = "Ignjatović, Nenad and Mančić, Lidija and Stojanović, Zoran S. and Nikolić, Marko G. and Škapin, Srečo Davor and Veselinović, Ljiljana and Uskoković, Dragan",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4064",
abstract = "Composite biomaterials based on nano hydroxyapatite (HAp) are the subject of numerous studies in reconstructive medicine. Multifunctional and nanoparticulate systems based on HAp and biodegradable polymers are successfully designed as systems for controlled and systemic drug delivery suitable for use in reconstructive medicine [1, 2]. Thanks to the stability and flexibility of the apatite structure, Ca ions can be replaced with various elements (Zn, Sr, Mg, Co, etc.) [3, 4]. Doping the apatite structure enables potential application of this material in preventive medicine, too. Multimodal imaging (MI) is a new and promising technique for improved diagnosis and it is patient-friendly because it saves time. MI has recently attracted much attention due to the advantageous combination of various imaging modalities, such as computer tomography, photoluminescence and magnetic resonance imaging.",
title = "Rare earth dual-doped multifunctional hydroxyapatite particles for potential application in preventive medicine"
}

Rare earth dual-doped multifunctional hydroxyapatite particles for potential application in preventive medicine

Ignjatović, Nenad; Mančić, Lidija; Stojanović, Zoran S.; Nikolić, Marko G.; Škapin, Srečo Davor; Veselinović, Ljiljana; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2018)

TY  - CONF
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Stojanović, Zoran S.
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Veselinović, Ljiljana
AU  - Uskoković, Dragan
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3663
AB  - Composite biomaterials based on nano hydroxyapatite (HAp) are the subject of numerous studies in reconstructive medicine. Multifunctional and nanoparticulate systems based on HAp and biodegradable polymers are successfully designed as systems for controlled and systemic drug delivery suitable for use in reconstructive medicine. Thanks to the stability and flexibility of the apatite structure, Ca ions can be replaced with various elements (Zn, Sr, Mg, Co, etc.). Doping the apatite structure enables potential application of this material in preventive medicine, too. Multimodal imaging (MI) is a new and promising technique for improved diagnosis and it is patient-friendly because it saves time. MI has recently attracted much attention due to the advantageous combination of various imaging modalities, such as computer tomography (CT), photoluminescence (PL) and magnetic resonance imaging (MRI). For such a promising approach, we devised new multimodal contrast agents using the doping of a HAp matrix with rare earth (RE) ions. Pure HAp (Ca5(PO4)3(OH)), magnetic HAp:Gd (Ca4.85Gd0.15(PO4)3(OH)), down-converting HAp:Gd,Eu (Ca4.94Gd0.02Eu0.04(PO4)3(OH)) and up-converting HAp:Gd,Yb/Tm (Ca4.85 Gd0.03Yb0.1Tm0.02(PO4)3(OH)) were synthesized using a hydrothermal procedure. Morphological and structural characteristics of the particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive X-ray spectrometry (EDX), photoluminescence (PL), Fourier Transform Infrared (FTIR) and diffuse reflectance spectroscopy (DRS). The results show that needle-like nano- or microparticles were obtained in all systems. Their phase composition and uniform distribution of dopants were confirmed by the structural refinement of the XRPD data, change in the band gap, and luminescence spectra recorded using different excitation sources (λ= 370, 394 and 977 nm).
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
T1  - Rare earth dual-doped multifunctional hydroxyapatite particles for potential application in preventive medicine
SP  - 130
EP  - 130
ER  - 
@conference{
author = "Ignjatović, Nenad and Mančić, Lidija and Stojanović, Zoran S. and Nikolić, Marko G. and Škapin, Srečo Davor and Veselinović, Ljiljana and Uskoković, Dragan",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3663",
abstract = "Composite biomaterials based on nano hydroxyapatite (HAp) are the subject of numerous studies in reconstructive medicine. Multifunctional and nanoparticulate systems based on HAp and biodegradable polymers are successfully designed as systems for controlled and systemic drug delivery suitable for use in reconstructive medicine. Thanks to the stability and flexibility of the apatite structure, Ca ions can be replaced with various elements (Zn, Sr, Mg, Co, etc.). Doping the apatite structure enables potential application of this material in preventive medicine, too. Multimodal imaging (MI) is a new and promising technique for improved diagnosis and it is patient-friendly because it saves time. MI has recently attracted much attention due to the advantageous combination of various imaging modalities, such as computer tomography (CT), photoluminescence (PL) and magnetic resonance imaging (MRI). For such a promising approach, we devised new multimodal contrast agents using the doping of a HAp matrix with rare earth (RE) ions. Pure HAp (Ca5(PO4)3(OH)), magnetic HAp:Gd (Ca4.85Gd0.15(PO4)3(OH)), down-converting HAp:Gd,Eu (Ca4.94Gd0.02Eu0.04(PO4)3(OH)) and up-converting HAp:Gd,Yb/Tm (Ca4.85 Gd0.03Yb0.1Tm0.02(PO4)3(OH)) were synthesized using a hydrothermal procedure. Morphological and structural characteristics of the particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive X-ray spectrometry (EDX), photoluminescence (PL), Fourier Transform Infrared (FTIR) and diffuse reflectance spectroscopy (DRS). The results show that needle-like nano- or microparticles were obtained in all systems. Their phase composition and uniform distribution of dopants were confirmed by the structural refinement of the XRPD data, change in the band gap, and luminescence spectra recorded using different excitation sources (λ= 370, 394 and 977 nm).",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018",
title = "Rare earth dual-doped multifunctional hydroxyapatite particles for potential application in preventive medicine",
pages = "130-130"
}

Lanthanide doped hydroxyapatite for multimodal imaging

Dinić, Ivana; Vuković, Marina; Ignjatović, Nenad; Stojanović, Zoran S.; Škapin, Srečo Davor; Veselinović, Ljiljana; Mančić, Lidija

(Belgrade : Serbian Ceramic Society, 2018)

TY  - CONF
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Ignjatović, Nenad
AU  - Stojanović, Zoran S.
AU  - Škapin, Srečo Davor
AU  - Veselinović, Ljiljana
AU  - Mančić, Lidija
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4118
AB  - Lantanide dual-doped hydroxyapatite (HaP:Ln) is currently the subject of numerous studies in reconstructive medicine. Designed in form of hybrid nanoparticles which have magnetic and luminescent properties HaP:Ln (where Ln=Gd/Eu or Gd/Yb/Tm) is capable to enhance signal detection. Beside it, due biodegradable properties it is suitable for use in bone tissue engineering and target drug delivery. For such a promising approach, doping of a HAp matrix is performed with Gd/Eu and Gd/Yb/Tm during hydrothermal synthesis using EDTA as chelating agent. Morphological and structural characteristics of the particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive X-ray spectroscopy (EDX), Fourier Transform Infrared (FTIR) and photoluminescence (PL). The results show that needle-like nano- or micro- particles were obtained in all systems. Their phase composition and uniform distribution of dopants were confirmed by the structural refinement of the XRPD data and luminescence response from Eu and Tb (λex = 370, 394 and 977 nm).
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 17-19 September 2018
T1  - Lanthanide doped hydroxyapatite for multimodal imaging
SP  - 71
EP  - 71
ER  - 
@conference{
author = "Dinić, Ivana and Vuković, Marina and Ignjatović, Nenad and Stojanović, Zoran S. and Škapin, Srečo Davor and Veselinović, Ljiljana and Mančić, Lidija",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4118",
abstract = "Lantanide dual-doped hydroxyapatite (HaP:Ln) is currently the subject of numerous studies in reconstructive medicine. Designed in form of hybrid nanoparticles which have magnetic and luminescent properties HaP:Ln (where Ln=Gd/Eu or Gd/Yb/Tm) is capable to enhance signal detection. Beside it, due biodegradable properties it is suitable for use in bone tissue engineering and target drug delivery. For such a promising approach, doping of a HAp matrix is performed with Gd/Eu and Gd/Yb/Tm during hydrothermal synthesis using EDTA as chelating agent. Morphological and structural characteristics of the particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive X-ray spectroscopy (EDX), Fourier Transform Infrared (FTIR) and photoluminescence (PL). The results show that needle-like nano- or micro- particles were obtained in all systems. Their phase composition and uniform distribution of dopants were confirmed by the structural refinement of the XRPD data and luminescence response from Eu and Tb (λex = 370, 394 and 977 nm).",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 17-19 September 2018",
title = "Lanthanide doped hydroxyapatite for multimodal imaging",
pages = "71-71"
}

Synthesis of core-shell hematite (α-Fe2O3) nanoplates: Quantitative analysis of the particle structure and shape, high coercivity and low cytotoxicity

Tadić, Marin; Kopanja, Lazar; Panjan, Matjaž; Kralj, Slavko; Nikodinović Runić, Jasmina; Stojanović, Zoran S.

(2017)

TY  - JOUR
AU  - Tadić, Marin
AU  - Kopanja, Lazar
AU  - Panjan, Matjaž
AU  - Kralj, Slavko
AU  - Nikodinović Runić, Jasmina
AU  - Stojanović, Zoran S.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/2349
AB  - Hematite core-shell nanoparticles with plate-like morphology were synthesized using a one-step hydrothermal synthesis. An XRPD analysis indicates that the sample consist of single-phase α-Fe2O3 nanoparticles. SEM and TEM measurements show that the hematite sample is composed of uniform core-shell nanoplates with 10–20 nm thickness, 80–100 nm landscape dimensions (aspect ratio ∼5) and 3–4 nm thickness of the surface shells. We used computational methods for the quantitative analysis of the core–shell particle structure and circularity shape descriptor for the quantitative shape analysis of the nanoparticles from TEM micrographs. The calculated results indicated that a percentage of the shell area in the nanoparticle area (share [%]) is significant. The determined values of circularity in the perpendicular and oblique perspective clearly show shape anisotropy of the nanoplates. The magnetic properties revealed the ferromagnetic-like properties at room temperature with high coercivity HC = 2340 Oe, pointing to the shape and surface effects. These results signify core-shell hematite nanoparticles’ for practical applications in magnetic devices. The synthesized hematite plate-like nanoparticles exhibit low cytotoxicity levels on the human lung fibroblasts (MRC5) cell line demonstrating the safe use of these nanoparticles for biomedical applications.
T2  - Applied Surface Science
T1  - Synthesis of core-shell hematite (α-Fe2O3) nanoplates: Quantitative analysis of the particle structure and shape, high coercivity and low cytotoxicity
SP  - 628
EP  - 634
VL  - 403
DO  - 10.1016/j.apsusc.2017.01.115
ER  - 
@article{
author = "Tadić, Marin and Kopanja, Lazar and Panjan, Matjaž and Kralj, Slavko and Nikodinović Runić, Jasmina and Stojanović, Zoran S.",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/2349",
abstract = "Hematite core-shell nanoparticles with plate-like morphology were synthesized using a one-step hydrothermal synthesis. An XRPD analysis indicates that the sample consist of single-phase α-Fe2O3 nanoparticles. SEM and TEM measurements show that the hematite sample is composed of uniform core-shell nanoplates with 10–20 nm thickness, 80–100 nm landscape dimensions (aspect ratio ∼5) and 3–4 nm thickness of the surface shells. We used computational methods for the quantitative analysis of the core–shell particle structure and circularity shape descriptor for the quantitative shape analysis of the nanoparticles from TEM micrographs. The calculated results indicated that a percentage of the shell area in the nanoparticle area (share [%]) is significant. The determined values of circularity in the perpendicular and oblique perspective clearly show shape anisotropy of the nanoplates. The magnetic properties revealed the ferromagnetic-like properties at room temperature with high coercivity HC = 2340 Oe, pointing to the shape and surface effects. These results signify core-shell hematite nanoparticles’ for practical applications in magnetic devices. The synthesized hematite plate-like nanoparticles exhibit low cytotoxicity levels on the human lung fibroblasts (MRC5) cell line demonstrating the safe use of these nanoparticles for biomedical applications.",
journal = "Applied Surface Science",
title = "Synthesis of core-shell hematite (α-Fe2O3) nanoplates: Quantitative analysis of the particle structure and shape, high coercivity and low cytotoxicity",
pages = "628-634",
volume = "403",
doi = "10.1016/j.apsusc.2017.01.115"
}
28
31
36

Synthesis of core-shell hematite (α-Fe2O3) nanoplates: Quantitative analysis of the particle structure and shape, high coercivity and low cytotoxicity

Tadić, Marin; Kopanja, Lazar; Panjan, Matjaž; Kralj, Slavko; Nikodinović Runić, Jasmina; Stojanović, Zoran S.

(2017)

TY  - JOUR
AU  - Tadić, Marin
AU  - Kopanja, Lazar
AU  - Panjan, Matjaž
AU  - Kralj, Slavko
AU  - Nikodinović Runić, Jasmina
AU  - Stojanović, Zoran S.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/2349
UR  - http://dais.sanu.ac.rs/123456789/4615
AB  - Hematite core-shell nanoparticles with plate-like morphology were synthesized using a one-step hydrothermal synthesis. An XRPD analysis indicates that the sample consist of single-phase α-Fe2O3 nanoparticles. SEM and TEM measurements show that the hematite sample is composed of uniform core-shell nanoplates with 10–20 nm thickness, 80–100 nm landscape dimensions (aspect ratio ∼5) and 3–4 nm thickness of the surface shells. We used computational methods for the quantitative analysis of the core–shell particle structure and circularity shape descriptor for the quantitative shape analysis of the nanoparticles from TEM micrographs. The calculated results indicated that a percentage of the shell area in the nanoparticle area (share [%]) is significant. The determined values of circularity in the perpendicular and oblique perspective clearly show shape anisotropy of the nanoplates. The magnetic properties revealed the ferromagnetic-like properties at room temperature with high coercivity HC = 2340 Oe, pointing to the shape and surface effects. These results signify core-shell hematite nanoparticles’ for practical applications in magnetic devices. The synthesized hematite plate-like nanoparticles exhibit low cytotoxicity levels on the human lung fibroblasts (MRC5) cell line demonstrating the safe use of these nanoparticles for biomedical applications.
T2  - Applied Surface Science
T1  - Synthesis of core-shell hematite (α-Fe2O3) nanoplates: Quantitative analysis of the particle structure and shape, high coercivity and low cytotoxicity
SP  - 628
EP  - 634
VL  - 403
DO  - 10.1016/j.apsusc.2017.01.115
ER  - 
@article{
author = "Tadić, Marin and Kopanja, Lazar and Panjan, Matjaž and Kralj, Slavko and Nikodinović Runić, Jasmina and Stojanović, Zoran S.",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/2349, http://dais.sanu.ac.rs/123456789/4615",
abstract = "Hematite core-shell nanoparticles with plate-like morphology were synthesized using a one-step hydrothermal synthesis. An XRPD analysis indicates that the sample consist of single-phase α-Fe2O3 nanoparticles. SEM and TEM measurements show that the hematite sample is composed of uniform core-shell nanoplates with 10–20 nm thickness, 80–100 nm landscape dimensions (aspect ratio ∼5) and 3–4 nm thickness of the surface shells. We used computational methods for the quantitative analysis of the core–shell particle structure and circularity shape descriptor for the quantitative shape analysis of the nanoparticles from TEM micrographs. The calculated results indicated that a percentage of the shell area in the nanoparticle area (share [%]) is significant. The determined values of circularity in the perpendicular and oblique perspective clearly show shape anisotropy of the nanoplates. The magnetic properties revealed the ferromagnetic-like properties at room temperature with high coercivity HC = 2340 Oe, pointing to the shape and surface effects. These results signify core-shell hematite nanoparticles’ for practical applications in magnetic devices. The synthesized hematite plate-like nanoparticles exhibit low cytotoxicity levels on the human lung fibroblasts (MRC5) cell line demonstrating the safe use of these nanoparticles for biomedical applications.",
journal = "Applied Surface Science",
title = "Synthesis of core-shell hematite (α-Fe2O3) nanoplates: Quantitative analysis of the particle structure and shape, high coercivity and low cytotoxicity",
pages = "628-634",
volume = "403",
doi = "10.1016/j.apsusc.2017.01.115"
}
28
31
36

Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies

Stojanović, Zoran S.; Ignjatović, Nenad; Wu, Victoria; Žunič, Vojka; Veselinović, Ljiljana; Škapin, Srečo Davor; Miljković, Miroslav; Uskoković, Vuk; Uskoković, Dragan

(2016)

TY  - JOUR
AU  - Stojanović, Zoran S.
AU  - Ignjatović, Nenad
AU  - Wu, Victoria
AU  - Žunič, Vojka
AU  - Veselinović, Ljiljana
AU  - Škapin, Srečo Davor
AU  - Miljković, Miroslav
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/15985
AB  - Recent developments in bone tissue engineering have led to an increased interest in one-dimensional (1D) hydroxyapatite (HA) nano- and micro-structures such as wires, ribbons and tubes. They have been proposed for use as cell substrates, reinforcing phases in composites and carriers for biologically active substances. Here we demonstrate the synthesis of 1D HA structures using an optimized, urea-assisted, high-yield hydrothermal batch process. The one-pot process, yielding HA structures composed of bundles of ribbons and wires, was typified by the simultaneous occurrence of a multitude of intermediate reactions, failing to meet the uniformity criteria over particle morphology and size. To overcome these issues, the preparation procedure was divided to two stages: dicalcium phosphate platelets synthesized in the first step were used as a precursor for the synthesis of 1D HA in the second stage. Despite the elongated particle morphologies, both the precursor and the final product exhibited excellent biocompatibility and caused no reduction of viability when tested against osteoblastic MC3T3-E1 cells in 2D culture up to the concentration of 2.6 mg/cm2. X-ray powder diffraction combined with a range of electron microscopies and laser diffraction analyses was used to elucidate the formation mechanism and the microstructure of the final particles. The two-step synthesis involved a more direct transformation of DCP to 1D HA with the average diameter of 37 nm and the aspect ratio exceeding 100:1. The comparison of crystalline domain sizes along different crystallographic directions showed no signs of significant anisotropy, while indicating that individual nanowires are ordered in bundles in the b crystallographic direction of the P63/m space group of HA. Intermediate processes, e.g., dehydration of dicalcium phosphate, are critical for the formation of 1D HA alongside other key aspects of this phase transformation, it must be investigated in more detail in the continuous design of smart HA micro- and nano-structures with advanced therapeutic potentials.
T2  - Materials Science and Engineering: C
T1  - Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies
SP  - 746
EP  - 757
VL  - 68
DO  - 10.1016/j.msec.2016.06.047
ER  - 
@article{
author = "Stojanović, Zoran S. and Ignjatović, Nenad and Wu, Victoria and Žunič, Vojka and Veselinović, Ljiljana and Škapin, Srečo Davor and Miljković, Miroslav and Uskoković, Vuk and Uskoković, Dragan",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/15985",
abstract = "Recent developments in bone tissue engineering have led to an increased interest in one-dimensional (1D) hydroxyapatite (HA) nano- and micro-structures such as wires, ribbons and tubes. They have been proposed for use as cell substrates, reinforcing phases in composites and carriers for biologically active substances. Here we demonstrate the synthesis of 1D HA structures using an optimized, urea-assisted, high-yield hydrothermal batch process. The one-pot process, yielding HA structures composed of bundles of ribbons and wires, was typified by the simultaneous occurrence of a multitude of intermediate reactions, failing to meet the uniformity criteria over particle morphology and size. To overcome these issues, the preparation procedure was divided to two stages: dicalcium phosphate platelets synthesized in the first step were used as a precursor for the synthesis of 1D HA in the second stage. Despite the elongated particle morphologies, both the precursor and the final product exhibited excellent biocompatibility and caused no reduction of viability when tested against osteoblastic MC3T3-E1 cells in 2D culture up to the concentration of 2.6 mg/cm2. X-ray powder diffraction combined with a range of electron microscopies and laser diffraction analyses was used to elucidate the formation mechanism and the microstructure of the final particles. The two-step synthesis involved a more direct transformation of DCP to 1D HA with the average diameter of 37 nm and the aspect ratio exceeding 100:1. The comparison of crystalline domain sizes along different crystallographic directions showed no signs of significant anisotropy, while indicating that individual nanowires are ordered in bundles in the b crystallographic direction of the P63/m space group of HA. Intermediate processes, e.g., dehydration of dicalcium phosphate, are critical for the formation of 1D HA alongside other key aspects of this phase transformation, it must be investigated in more detail in the continuous design of smart HA micro- and nano-structures with advanced therapeutic potentials.",
journal = "Materials Science and Engineering: C",
title = "Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies",
pages = "746-757",
volume = "68",
doi = "10.1016/j.msec.2016.06.047"
}
18
20
22

Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies

Stojanović, Zoran S.; Ignjatović, Nenad; Wu, Victoria; Žunič, Vojka; Veselinović, Ljiljana; Škapin, Srečo Davor; Miljković, Miroslav; Uskoković, Vuk; Uskoković, Dragan

(Elsevier, 2016)

TY  - JOUR
AU  - Stojanović, Zoran S.
AU  - Ignjatović, Nenad
AU  - Wu, Victoria
AU  - Žunič, Vojka
AU  - Veselinović, Ljiljana
AU  - Škapin, Srečo Davor
AU  - Miljković, Miroslav
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/16006
AB  - Recent developments in bone tissue engineering have led to an increased interest in one-dimensional (1D) hydroxyapatite (HA) nano- and micro-structures such as wires, ribbons and tubes. They have been proposed for use as cell substrates, reinforcing phases in composites and carriers for biologically active substances. Here we demonstrate the synthesis of 1D HA structures using an optimized, urea-assisted, high-yield hydrothermal batch process. The one-pot process, yielding HA structures composed of bundles of ribbons and wires, was typified by the simultaneous occurrence of a multitude of intermediate reactions, failing to meet the uniformity criteria over particle morphology and size. To overcome these issues, the preparation procedure was divided to two stages: dicalcium phosphate platelets synthesized in the first step were used as a precursor for the synthesis of 1D HA in the second stage. Despite the elongated particle morphologies, both the precursor and the final product exhibited excellent biocompatibility and caused no reduction of viability when tested against osteoblastic MC3T3-E1 cells in 2D culture up to the concentration of 2.6 mg/cm2. X-ray powder diffraction combined with a range of electron microscopies and laser diffraction analyses was used to elucidate the formation mechanism and the microstructure of the final particles. The two-step synthesis involved a more direct transformation of DCP to 1D HA with the average diameter of 37 nm and the aspect ratio exceeding 100:1. The comparison of crystalline domain sizes along different crystallographic directions showed no signs of significant anisotropy, while indicating that individual nanowires are ordered in bundles in the b crystallographic direction of the P63/m space group of HA. Intermediate processes, e.g., dehydration of dicalcium phosphate, are critical for the formation of 1D HA alongside other key aspects of this phase transformation, it must be investigated in more detail in the continuous design of smart HA micro- and nano-structures with advanced therapeutic potentials.
PB  - Elsevier
T2  - Materials Science and Engineering: C
T1  - Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies
SP  - 746
EP  - 757
VL  - 68
DO  - 10.1016/j.msec.2016.06.047
ER  - 
@article{
author = "Stojanović, Zoran S. and Ignjatović, Nenad and Wu, Victoria and Žunič, Vojka and Veselinović, Ljiljana and Škapin, Srečo Davor and Miljković, Miroslav and Uskoković, Vuk and Uskoković, Dragan",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/16006",
abstract = "Recent developments in bone tissue engineering have led to an increased interest in one-dimensional (1D) hydroxyapatite (HA) nano- and micro-structures such as wires, ribbons and tubes. They have been proposed for use as cell substrates, reinforcing phases in composites and carriers for biologically active substances. Here we demonstrate the synthesis of 1D HA structures using an optimized, urea-assisted, high-yield hydrothermal batch process. The one-pot process, yielding HA structures composed of bundles of ribbons and wires, was typified by the simultaneous occurrence of a multitude of intermediate reactions, failing to meet the uniformity criteria over particle morphology and size. To overcome these issues, the preparation procedure was divided to two stages: dicalcium phosphate platelets synthesized in the first step were used as a precursor for the synthesis of 1D HA in the second stage. Despite the elongated particle morphologies, both the precursor and the final product exhibited excellent biocompatibility and caused no reduction of viability when tested against osteoblastic MC3T3-E1 cells in 2D culture up to the concentration of 2.6 mg/cm2. X-ray powder diffraction combined with a range of electron microscopies and laser diffraction analyses was used to elucidate the formation mechanism and the microstructure of the final particles. The two-step synthesis involved a more direct transformation of DCP to 1D HA with the average diameter of 37 nm and the aspect ratio exceeding 100:1. The comparison of crystalline domain sizes along different crystallographic directions showed no signs of significant anisotropy, while indicating that individual nanowires are ordered in bundles in the b crystallographic direction of the P63/m space group of HA. Intermediate processes, e.g., dehydration of dicalcium phosphate, are critical for the formation of 1D HA alongside other key aspects of this phase transformation, it must be investigated in more detail in the continuous design of smart HA micro- and nano-structures with advanced therapeutic potentials.",
publisher = "Elsevier",
journal = "Materials Science and Engineering: C",
title = "Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies",
pages = "746-757",
volume = "68",
doi = "10.1016/j.msec.2016.06.047"
}
18
20
22

Pittcon 2016 experience in Atlanta – firsthand conference impressions from ACS delegate

Stojanović, Zoran S.

(Belgrade : Institute of Technical Sciences of SASA, 2016)

TY  - CONF
AU  - Stojanović, Zoran S.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/888
AB  - In this informal presentation and chat about my Pittcon 2016 experience held in Atlanta, US, I will attempt to give you an insight of this extraordinary event which is held annually and is considered as a leading conference and exposition on laboratory science. I will also try to give you a guidelines how to apply for travel grants which are sponsored by Pittcon organizers in collaboration with ACS Committee on International Activities (IAC). These grants are available to early career analytical chemists from all around the globe, and are given for a different region annually. Beside great lectures provided by eminent scientists from all around the world, updating with latest achievements in instrumentation from all companies in the field of analytical and lab equipment, possibility to meet and make collaborations with participating scientists and companies, you will certainly enjoy hanging around with other ACS delegates from your part of the world.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade
T1  - Pittcon 2016 experience in Atlanta – firsthand conference impressions from ACS delegate
SP  - 71
EP  - 71
ER  - 
@conference{
author = "Stojanović, Zoran S.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/888",
abstract = "In this informal presentation and chat about my Pittcon 2016 experience held in Atlanta, US, I will attempt to give you an insight of this extraordinary event which is held annually and is considered as a leading conference and exposition on laboratory science. I will also try to give you a guidelines how to apply for travel grants which are sponsored by Pittcon organizers in collaboration with ACS Committee on International Activities (IAC). These grants are available to early career analytical chemists from all around the globe, and are given for a different region annually. Beside great lectures provided by eminent scientists from all around the world, updating with latest achievements in instrumentation from all companies in the field of analytical and lab equipment, possibility to meet and make collaborations with participating scientists and companies, you will certainly enjoy hanging around with other ACS delegates from your part of the world.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade",
title = "Pittcon 2016 experience in Atlanta – firsthand conference impressions from ACS delegate",
pages = "71-71"
}

In Vitro Evaluation of Nanoscale Hydroxyapatite-Based Bone Reconstructive Materials with Antimicrobial Properties

Ajduković, Zorica; Mihajilov Krstev, Tatjana; Ignjatović, Nenad; Stojanović, Zoran S.; Mladenović Antić, Snežana; Kocić, Branislava; Najman, Stevo; Petrović, Nenad D.; Uskoković, Dragan

(American Scientific Publishers, 2016)

TY  - JOUR
AU  - Ajduković, Zorica
AU  - Mihajilov Krstev, Tatjana
AU  - Ignjatović, Nenad
AU  - Stojanović, Zoran S.
AU  - Mladenović Antić, Snežana
AU  - Kocić, Branislava
AU  - Najman, Stevo
AU  - Petrović, Nenad D.
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/2385
AB  - In the field of oral implantology the loss of bone tissue prevents adequate patient care, and calls for the use of synthetic biomaterials with properties that resemble natural bone. Special attention is paid to the risk of infection after the implantation of these materials. Studies have suggested that some nanocontructs containing metal ions have antimicrobial properties. The aim of this study was to examine the antimicrobial and hemolytic activity of cobalt-substituted hydroxyapatite nanoparticles, compared to hydroxyapatite and hydroxyapatite/poly-lactide-co-glycolide. The antibacterial effects of these powders were tested against two pathogenic bacterial strains: Escherichia coi (ATCC 25922) and Staphylococcus aureus (ATCC 25923), using the disc diffusion method and the quantitative antimicrobial test in a liquid medium. The quantitative antimicrobial test showed that all of the tested biomaterials have some antibacterial properties. The effects of both tests were more prominent in case of S. aureus than in E coli. A higher percentage of cobalt in the crystal structure of cobalt-substituted hydroxyapatite nanoparticles led to an increased antimicrobial activity. All of the presented biomaterial samples were found to be non-hemolytic. Having in mind that the tested of cobalt-substituted hydroxyapatite (Ca/Co-HAp) material in given concentrations shows good hemocompatibility and antimicrobial effects, along with its previously studied biological properties, the conclusion can be reached that it is a potential candidate that could substitute calcium hydroxyapatite as the material of choice for use in bone tissue engineering and clinical practices in orthopedic, oral and maxillofacial surgery.
PB  - American Scientific Publishers
T2  - Journal of Nanoscience and Nanotechnology
T1  - In Vitro Evaluation of Nanoscale Hydroxyapatite-Based Bone Reconstructive Materials with Antimicrobial Properties
SP  - 1420
EP  - 1428
VL  - 16
IS  - 2
DO  - 10.1166/jnn.2016.10699
ER  - 
@article{
author = "Ajduković, Zorica and Mihajilov Krstev, Tatjana and Ignjatović, Nenad and Stojanović, Zoran S. and Mladenović Antić, Snežana and Kocić, Branislava and Najman, Stevo and Petrović, Nenad D. and Uskoković, Dragan",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/2385",
abstract = "In the field of oral implantology the loss of bone tissue prevents adequate patient care, and calls for the use of synthetic biomaterials with properties that resemble natural bone. Special attention is paid to the risk of infection after the implantation of these materials. Studies have suggested that some nanocontructs containing metal ions have antimicrobial properties. The aim of this study was to examine the antimicrobial and hemolytic activity of cobalt-substituted hydroxyapatite nanoparticles, compared to hydroxyapatite and hydroxyapatite/poly-lactide-co-glycolide. The antibacterial effects of these powders were tested against two pathogenic bacterial strains: Escherichia coi (ATCC 25922) and Staphylococcus aureus (ATCC 25923), using the disc diffusion method and the quantitative antimicrobial test in a liquid medium. The quantitative antimicrobial test showed that all of the tested biomaterials have some antibacterial properties. The effects of both tests were more prominent in case of S. aureus than in E coli. A higher percentage of cobalt in the crystal structure of cobalt-substituted hydroxyapatite nanoparticles led to an increased antimicrobial activity. All of the presented biomaterial samples were found to be non-hemolytic. Having in mind that the tested of cobalt-substituted hydroxyapatite (Ca/Co-HAp) material in given concentrations shows good hemocompatibility and antimicrobial effects, along with its previously studied biological properties, the conclusion can be reached that it is a potential candidate that could substitute calcium hydroxyapatite as the material of choice for use in bone tissue engineering and clinical practices in orthopedic, oral and maxillofacial surgery.",
publisher = "American Scientific Publishers",
journal = "Journal of Nanoscience and Nanotechnology",
title = "In Vitro Evaluation of Nanoscale Hydroxyapatite-Based Bone Reconstructive Materials with Antimicrobial Properties",
pages = "1420-1428",
volume = "16",
number = "2",
doi = "10.1166/jnn.2016.10699"
}
3
3
4

Influence of ageing of milled clay and its composite with TiO2on the heavy metal adsorption characteristics

Đukić, Anđelka B.; Kumrić, Ksenija R.; Vukelić, Nikola S.; Stojanović, Zoran S.; Stojmenović, Marija D.; Milošević, Sanja S.; Matović, Ljiljana Lj.

(Elsevier, 2015)

TY  - JOUR
AU  - Đukić, Anđelka B.
AU  - Kumrić, Ksenija R.
AU  - Vukelić, Nikola S.
AU  - Stojanović, Zoran S.
AU  - Stojmenović, Marija D.
AU  - Milošević, Sanja S.
AU  - Matović, Ljiljana Lj.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/3526
AB  - The aim of the present study was to investigate the effect of ageing of mechanochemically synthesized clay and its TiO2composite on the simultaneous removal of Pb(II), Cd(II), Cu(II) and Zn(II) ions from acidic aqueous solutions. The effect of different ageing times on sorption behavior of 1, 2, 10 and 19 h milled clays, as well as the clay composite with 20 wt% of amorphous TiO2(TiO2,a), was investigated. Ageing of the milled clays has stronger influence on the removal of Zn(II) and Cd(II) than on the removal of Pb(II) and Cu(II) ions. Ageing is particularly pronounced for the samples milled for 1, 2 and 10 h (which lost enhanced sorption properties after 3 months of ageing), and less pronounced for the samples milled longer period of time, 19 h (which retained sorption properties until 6 months). After these periods of time sorption capacities became nearly the same as the sorption capacities of the raw (unmilled) clay. The different responses on the ageing process of milled clays and composite are a consequence of microstructural changes such as recrystallization of montmorillonite phase and decrease in particle sizes. Slower ageing of composite compare to the milled clays can be related to the stabilization effect of TiO2particles which are dispersed in the clay matrix thus preventing recrystallization of the sample particles. Only a slight tendency towards the formation of agglomerations was noticed after 12 months of ageing. © 2014 Elsevier Ltd and Techna Group S.r.l.
PB  - Elsevier
T2  - Ceramics International
T1  - Influence of ageing of milled clay and its composite with TiO2on the heavy metal adsorption characteristics
SP  - 5129
EP  - 5137
VL  - 41
IS  - 3
DO  - 10.1016/j.ceramint.2014.12.085
ER  - 
@article{
author = "Đukić, Anđelka B. and Kumrić, Ksenija R. and Vukelić, Nikola S. and Stojanović, Zoran S. and Stojmenović, Marija D. and Milošević, Sanja S. and Matović, Ljiljana Lj.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/3526",
abstract = "The aim of the present study was to investigate the effect of ageing of mechanochemically synthesized clay and its TiO2composite on the simultaneous removal of Pb(II), Cd(II), Cu(II) and Zn(II) ions from acidic aqueous solutions. The effect of different ageing times on sorption behavior of 1, 2, 10 and 19 h milled clays, as well as the clay composite with 20 wt% of amorphous TiO2(TiO2,a), was investigated. Ageing of the milled clays has stronger influence on the removal of Zn(II) and Cd(II) than on the removal of Pb(II) and Cu(II) ions. Ageing is particularly pronounced for the samples milled for 1, 2 and 10 h (which lost enhanced sorption properties after 3 months of ageing), and less pronounced for the samples milled longer period of time, 19 h (which retained sorption properties until 6 months). After these periods of time sorption capacities became nearly the same as the sorption capacities of the raw (unmilled) clay. The different responses on the ageing process of milled clays and composite are a consequence of microstructural changes such as recrystallization of montmorillonite phase and decrease in particle sizes. Slower ageing of composite compare to the milled clays can be related to the stabilization effect of TiO2particles which are dispersed in the clay matrix thus preventing recrystallization of the sample particles. Only a slight tendency towards the formation of agglomerations was noticed after 12 months of ageing. © 2014 Elsevier Ltd and Techna Group S.r.l.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Influence of ageing of milled clay and its composite with TiO2on the heavy metal adsorption characteristics",
pages = "5129-5137",
volume = "41",
number = "3",
doi = "10.1016/j.ceramint.2014.12.085"
}
13
12
15

Proučavanje procesa sinteze i svojstava višefaznih oksidnih prahova dobijenih hidrotermalnim procesiranjem

Stojanović, Zoran S.

(Belgrade : University of Belgrade, Faculty of Technology and Metallurgy, 2014)

@phdthesis{
author = "Stojanović, Zoran S.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/577, http://nardus.mpn.gov.rs/handle/123456789/6252",
abstract = "Doktorska disertacija obuhvata istraživanja fundamentalnih aspekata i strategija sinteze koloidnih nanokristala, nanostruktura i submikronskih kristala nekoliko neorganskih oksidnih materijala i zlata, hidrotermalnim i solvotermalnim procesima. Motivacija za istraživanja je opšti naučni interes za poznavanjem mehanizama sinteze koloidnih nanokristala i rasta kristala u hidrotermalnim i solvotermalnim uslovima u cilju uspostavljanja metoda kontrolisane sinteze homogenih i heterogenih funkcionalnih nanostruktura. Dalja istraživanja su vođena u dva pravca, formiranje različitih struktura višeg reda supramolekulskim interakcijama i potencijalna implementacija sintetisanih materijala u praksi. Materijal koji je po obimu najviše bio zastupljen u istraživanjima koja su obuhvaćena doktorskom disertacijom je kalcijum hidroksiapatit (HAp) i njegovi parcijalno supstituisani derivati sa jonima Co2+ (CoHAp) i Zr4+/ZrO2 (ZrHAp). Ispitana je sinteza HAp, CoHAp i ZrHAp u hidrotermalnom sistemu bez prisustva organskih supstanci. Uračena je detaljna karakterizacija uzoraka metodama kao što su rendgenska difrakcija na prahu (XRD), laserska difrakcija (LD), atomska spektroskopija (ICP AS) i skanirajuća elektronska mikroskopija (SEM). U nastavku istraživanja, ekstenzivno su ispitani HAp i CoHAp sa različitim udelima supstituisanog kobalta u strukturi u in vitro i in vivo biološkim uslovima kao funkcionalnog materijala za reparaciju oštećenog koštanog tkiva mandibule pacova. Dobijeni rezultati pokazuju da sinergistiĉki efekti u biološkim sistemima prilikom implantacije CoHAp materijala, omogućavaju iznenađujuće brzu regeneraciju i povećanje gustine koštanog tkiva. Ispitana je mogućnost sinteze ambifilnih nanočestica HAp u kombinovanom dvofaznom hidrotermalnom sistemu uz pomoć trietanolamina i oleinske kiseline. Karakterizacija uzoraka LD, SEM i infracrvenom spektroskopijom sa Furijeovom transformacijom (FTIR), kao i makroskopska svojstva, potvrdila su da sintetisane ĉestice HAp imaju dvostruku polarnost, što je pokazano stabilizacijom Pikeringovih emulzija za primenu u nanobiotehnologiji.
Drugi, veći deo istraživanja, se odnosi na okside gvožđa. Detaljno je istražena kombinovana jednofazna i dvofazna solvotermalna hidrolitiĉka metoda u smeši rastvaraĉa za sintezu koloidnih nanokristala magnetita. U zavisnosti od prekursora i odnosa rastvaraĉa, dobijeni su monodisperzni alkil – terminisani superparamagnetni nanokristali oksida gvožđa (SPION's) veličine od 5 nm do 20 nm. Ovo je potvrđeno metodama kao što su XRD, FTIR, transmisiona elektronska mikroskopija (TEM), elektronska difrakcija (ED), dinamičko rasejanje svetlosti (DLS) i magnetometrija sa vibrirajućim uzorkom (VSM). Nanokristali veličine 5 nm imaju magnetizaciju saturacije 40 emu/g. Alkil – terminisani SPION's su imobilisani u polimernu matricu poli-L-laktida:polietilenimina i dobijene su stabilne disperzije hibridnih magnetnih nanočestica u vodi, sa česticama veličine oko 200 nm. Sve ovo je takoće potvrđeno TEM, ED i LD tehnikama. Sintetisani SPION's su takoĊe upotrebljeni za sintezu hetero nanodimera zlato – magnetit. Dimer je karakterisan TEM i UV – VIS spektroskopijom. Submikronski kristali hematita α – Fe2O3 oblika pločica sintetisani su hidrotermalnom metodom. Kristalografska analiza je pokazala da pločice imaju preferentni rast duž [012]
kristalografskog pravca. Usmereni rast pločica je postignut dodavanjem male koliĉine oleatnog liganda u sistem. Pomoću magnetnih merenja ustanovljeno je da je vrednost koerecitivnosti ovih pločica veća u poređenju sa kompaktnim hematitom. Magnetna svojstva ovih struktura su u jakoj korelaciji sa njihovom morfologijom, što je bilo predmet daljih istraživanja.
Sledeće, ispitana je hidroliza molekulskog prekursora Fe(III) – oleata u dvofaznom sistemu i taloženje nanostrukturnog litijum gvožđe fosfata LiFePO4 u hidrotermalnim uslovima. Taloženje je omogućeno mehanizmom redukcionog rastvaranja produkta hidrolize u enkapsuliranoj vodenoj fazi. Uspostavljena metoda je pokazala sofisticiranost, ekonomičnost potrošnje litijuma i visok stepen reproducibilnosti. Cikliranjem materijala bez dodatnog tretmana u bateriji pri strujama od C/20 na 55 °C, ustanovljeno je da je njegov kapacitet 80 % teorijskog. Predložena je modifikacija metode koja će se dalje ispitati. Ispitane su mogućnosti sinteze plazmonskih nanokristala, konkretno, nanokristala zlata u jednostavnom solvotermalnom sistemu sa oleilaminom u funkciji liganda, rastvarača, reducenta i vodom kao reaktantom. Rasvetljen je mehanizam redukcije i izvedeni su bitni zaključci. Metoda se pokazala efektivnom za sintezu monodisperznih hidrofobnih nanokristala zlata veličine 7 nm, što je potvrđeno TEM, ED, DLS i UV – VIS tehnikama. Nanokristali Au su solubilizovani lipidima MHCP, DPPE – PEG2k i DGS – NTA(Ni) i konjugovani putem specifičnog vezivanja za inženjerisane nanokaveze feritina. Ovo je takođe potvrđeno TEM i DLS metodama.
I na kraju, dodatno je ispitana mogućnost katalitiĉkog i fotokatalitičkog nagrizanja Si za dobijanje poroznog fotoluminiscentnog (PL) silicijuma. Ovo je postignuto impregnacijom površine hidrofobnim nanokristalima Au. Dobijene su porozne strukture i 1D nanostrukture Si,ultraduge nano – žice debljine između 40 i 60 nm, što je potvrđeno SEM analizom.
Nanostrukture Si imaju ogroman potencijal u biomedicinskim i drugim tehnološkim primenama. Istraživanja hidrotermalnih i solovtermalnih postupaka za sintezu nanostrukturnih materijala koji su prikazani u disertaciji pokazuju relativnu sloţenost ovih metoda, ali i njihovu veliku mogućnost i superiornost u odnosu na druge metode dizajniranja ovakvih struktura na molekulskom nivou sa ciljanim morfološkim, fizičkim i hemijskim svojstvima., The PhD thesis includes research of the fundamental aspects and the synthetic strategies of colloidal nanocrystals, nanostructures and submicron crystals of several inorganic oxide materials and gold element obtained by hydrothermal and solvothermal processes. The motivation for the research was the general scientific interest for understanding the mechanisms of the colloidal nanocrystals synthesis and the crystal growth in hydrothermal and solvothermal conditions, in order to establish controlled synthesis of homogeneous and heterogeneous functional nanostructures. The following investigations were conducted in two directions, the first one was the formation of various structures of higher orders by supramolecular interactions, and the other was the potential implementation of the synthesized materials in practice.
The most used materials in the research included in this thesis were calcium hydroxyapatite (HAp) and its derivates, the partial substituent with Co2+ (CoHAp) and Zr4+/ZrO2 (ZrHAp). The synthesis of HAp, CoHAp and ZrHAp were investigated in hydrothermal system without any presence of organic compounds. The detailed characterization of samples was performed using methods such as X – ray powder diffraction (XRD), the laser diffraction (LD), atomic spectroscopy (ICP AS) and scanning electron microscopy (SEM). In addition, the extensive study of HAp and CoHAp was conducted in vitro and in vivo in the biological environment to examine functional properties of these materials for bone damage reparation in rat’s mandible. Obtained results shows that synergistic effects in biological systems, when implanting CoHAp material, enable unexpectedly fast regeneration and improve density of bone tissue.
The possibility of ambiphilic HAp nanoparticle synthesis was investigated in combined two phase hydrothermal system using triethanolamine and oleic acid. The characterization of dispersions by SEM and LD, using Fourier transformed infrared spectroscopy, as well as macroscopic properties confirmed that synthesized HAp nanoparticles have hydrophilic as well as hydrophobic properties. Also it was demonstrated by stabilization of Pickering emulsion for nanobiotechnology application.
The second larger part of the research was related to iron oxides. The combined one and two phase solvothermal hydrolitic method for synthesis of colloidal magnetite nanocrystals in mixtured solvent was detaily examined. Regarding of precursor and solvents ratio, different sizes, from 5 nm up to 20 nm, of monodispersed alkyl – terminated superparamagnetic iron oxide nanocrystals (SPION's) were produced. This was confirmed by means of methods such as XRD, FTIR, transmision electron microscopy (TEM), electron diffraction (ED), dinamic light scattering (DLS) and vibrating sample magnetometry (VSM). The 5 nm sized nanocrystals have saturation magnetization of ~ 40 emu/g. The alkyl – terminated SPION’s were immobilized in polymeric matrix of poly-Llactide: polyethylenimine. The stabile dispersions of hybrid magnetic nanoparticles in water were obtained, contaning of 200 nm sized particles. All of this was confirmed also by TEM, ED and LD techniques. The synthesized SPION’s were also used for hetero nanodimmer gold – magnetite synthesis. The dimmer was characterized using TEM and UV – VIS spectroscopy. Plate–like shaped submicron crystals of hematite α – Fe2O3 were synthesized by hydrothermal method. Crystallographic analysis revealed that growth of platelets was oriented in [012] crystallographic direction. Oriented growth was achieved by adding small amounts of oleate ligand in system. Measurements established that coercivity value of these platelets is higher than for bulk hematite. Magnetic properties of these structures are strongly, correlated with morphology which, was the subject of further research. Furthermore, hydrolysis of molecular precursor Fe(III) – oleate in two phase system and precipitation of nanostructured lithium iron phosphate LiFePO4 in hydrothermal conditions were examined. The precipitation was enabled by mechanism of reductive dissolution of hydrolysis product in encapsulated water phase. The established method demonstrated sophistication, chemical efficiency of lithium consumption and high degree of reproducibility. Galvanostatic cycling of battery made out of ―as prepared‖ material on 55 oC, showed capacity of 80% of theoretical at rate of C/20. Modification of the method was also proposed and will be examined. The plasmonic nanocrystals was also investigated, specifically, gold nanocrystals in simple solvothermal system using oleylamine as ligand, solvent, reducing agent and water as reactant. The reduction mechanism was elucidated and some important remarks were made. The method was proven to be effective for synthesis of monodispersed hydrophobic Au nanocrystals (7 nm in sizes), which was confirmed by TEM, ED, DLS and UV – VIS techniques. Au nanocrystals were solubilized by MHCP, DPPE – PEG2k and DGS – NTA(Ni) lipids, and conjugated by specific binding to engineered ferritin nanocages. This is also confirmed using TEM and DLS methods.
Finnaly, possibility of catalitic and photocatalitic etching of Si wafers to obtain porous photoluminescent (PL) silicon were examined. This is achieved by impregnation of wafer surface with hydrophobic Au nanocrystals. Porous structures and 1D nanostructures of Si, ultra –long nanowires from 40 nm to 60 nm ticknes, were obtained, which was confirmed by SEM analysis. Silicon nanostructures have great potential in biomedical and other technological applications. 
The study of hydrothermal and solvothermal synthesis processes of nanostructured materials presented in the thesis, demonstrated relative complexity of these methods and their great ability and superiority over other methods of designing such structures at molecular level with controllable morphological, physical and chemical properties.",
publisher = "Belgrade : University of Belgrade, Faculty of Technology and Metallurgy",
title = "Proučavanje procesa sinteze i svojstava višefaznih oksidnih prahova dobijenih hidrotermalnim procesiranjem"
}

Proučavanje procesa sinteze i svojstava višefaznih oksidnih prahova dobijenih hidrotermalnim procesiranjem

Stojanović, Zoran S.

(2014)

@misc{
author = "Stojanović, Zoran S.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/578",
abstract = "PhD defence presentation. The thesis "The Study of Synthesis Processes and Properties of Multiphase Oxide Powders Obtained by Hydrothermal Processing" was defended at the University of Belgrade, Faculty of Technology and Metallurgy, in 2014., Prezentacija prikazana na odbrani doktorske teze "Proučavanje procesa sinteze i svojstava višefaznih oksidnih prahova dobijenih hidrotermalnim procesiranjem". Teza je odbranjena na Tehnološko-metalurškom fakultetu Univerziteta u Beogradu 2014. godine.",
title = "Proučavanje procesa sinteze i svojstava višefaznih oksidnih prahova dobijenih hidrotermalnim procesiranjem"
}

The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures

Stojanović, Zoran S.; Veselinović, Ljiljana; Ignjatović, Nenad; Miljković, Miroslav; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2014)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana
AU  - Ignjatović, Nenad
AU  - Miljković, Miroslav
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/581
AB  - 1D hydroxyapatite nanostructures such as nanotubes, ultra long nanowires and other morphological varieties have been promising material for bone reconstruction and therapy. Advantages like high specific surface, packing properties and mechanical properties make those nanostructures excellent candidates for scaffolds. This work is focused on soft hydrothermal routes for preparing different 1D nanostructures. Using hydroxyapatite formation mechanisms in hydrothermal and solvothermal systems, various chemical parameters, i.e. precursor chemical composition, are investigated for obtaining these 1D materials on gram scale. The synthesized materials are characterized by X – ray diffraction, scanning electron microscopy and laser diffraction methods.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
T1  - The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures
SP  - 63
EP  - 63
ER  - 
@conference{
author = "Stojanović, Zoran S. and Veselinović, Ljiljana and Ignjatović, Nenad and Miljković, Miroslav and Uskoković, Dragan",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/581",
abstract = "1D hydroxyapatite nanostructures such as nanotubes, ultra long nanowires and other morphological varieties have been promising material for bone reconstruction and therapy. Advantages like high specific surface, packing properties and mechanical properties make those nanostructures excellent candidates for scaffolds. This work is focused on soft hydrothermal routes for preparing different 1D nanostructures. Using hydroxyapatite formation mechanisms in hydrothermal and solvothermal systems, various chemical parameters, i.e. precursor chemical composition, are investigated for obtaining these 1D materials on gram scale. The synthesized materials are characterized by X – ray diffraction, scanning electron microscopy and laser diffraction methods.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts",
title = "The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures",
pages = "63-63"
}

The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures

Stojanović, Zoran S.; Veselinović, Ljiljana; Ignjatović, Nenad; Miljković, Miroslav; Uskoković, Dragan

(2014)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana
AU  - Ignjatović, Nenad
AU  - Miljković, Miroslav
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/576
AB  - Poster presented at the 16th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2014, Herceg Novi, Montenegro, September 1–5, 2014
T1  - The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures
ER  - 
@conference{
author = "Stojanović, Zoran S. and Veselinović, Ljiljana and Ignjatović, Nenad and Miljković, Miroslav and Uskoković, Dragan",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/576",
abstract = "Poster presented at the 16th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2014, Herceg Novi, Montenegro, September 1–5, 2014",
title = "The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures"
}

The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles

Stojanović, Zoran S.; Otoničar, Mojca; Lee, Jongwook; Stevanović, Magdalena; Hwang, Mintai P.; Lee, Hyi; Choi, Jonghoon; Uskoković, Dragan

(Elsevier, 2013)

TY  - JOUR
AU  - Stojanović, Zoran S.
AU  - Otoničar, Mojca
AU  - Lee, Jongwook
AU  - Stevanović, Magdalena
AU  - Hwang, Mintai P.
AU  - Lee, Hyi
AU  - Choi, Jonghoon
AU  - Uskoković, Dragan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/113
AB  - We report a simple and green procedure for the preparation of magnetic iron oxide nanocrystals via solvothermal synthesis. The nanocrystal synthesis was carried out under mild conditions in the water–ethanol–oleic acid solvent system with the use of the oleate anion as a surface modifier of nanocrystals and glucose as a reducing agent. Specific conditions for homogenous precipitation achieved in such a reaction system lead to the formation of uniform high-quality nanocrystals down to 5 nm in diameter. The obtained hydrophobic nanocrystals can easily be converted to hydrophilic magnetic nanoparticles by being immobilized in a poly(l-lactide)–polyethyleneimine polymeric matrix. These hybrid nano-constructs may find various biomedical applications, such as magnetic separation, gene transfection and/or magnetic resonance imaging.
PB  - Elsevier
T2  - Colloids and Surfaces B: Biointerfaces
T1  - The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles
SP  - 236
EP  - 243
VL  - 109
DO  - 10.1016/j.colsurfb.2013.03.053
ER  - 
@article{
author = "Stojanović, Zoran S. and Otoničar, Mojca and Lee, Jongwook and Stevanović, Magdalena and Hwang, Mintai P. and Lee, Hyi and Choi, Jonghoon and Uskoković, Dragan",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/113",
abstract = "We report a simple and green procedure for the preparation of magnetic iron oxide nanocrystals via solvothermal synthesis. The nanocrystal synthesis was carried out under mild conditions in the water–ethanol–oleic acid solvent system with the use of the oleate anion as a surface modifier of nanocrystals and glucose as a reducing agent. Specific conditions for homogenous precipitation achieved in such a reaction system lead to the formation of uniform high-quality nanocrystals down to 5 nm in diameter. The obtained hydrophobic nanocrystals can easily be converted to hydrophilic magnetic nanoparticles by being immobilized in a poly(l-lactide)–polyethyleneimine polymeric matrix. These hybrid nano-constructs may find various biomedical applications, such as magnetic separation, gene transfection and/or magnetic resonance imaging.",
publisher = "Elsevier",
journal = "Colloids and Surfaces B: Biointerfaces",
title = "The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles",
pages = "236-243",
volume = "109",
doi = "10.1016/j.colsurfb.2013.03.053"
}
12
14
14

The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles

Stojanović, Zoran S.; Otoničar, Mojca; Lee, Jongwook; Stevanović, Magdalena; Hwang, Mintai P.; Lee, Hyi; Choi, Jonghoon; Uskoković, Dragan

(2013)

TY  - JOUR
AU  - Stojanović, Zoran S.
AU  - Otoničar, Mojca
AU  - Lee, Jongwook
AU  - Stevanović, Magdalena
AU  - Hwang, Mintai P.
AU  - Lee, Hyi
AU  - Choi, Jonghoon
AU  - Uskoković, Dragan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/163
AB  - We report a simple and green procedure for the preparation of magnetic iron oxide nanocrystals via solvothermal synthesis. The nanocrystal synthesis was carried out under mild conditions in the water–ethanol–oleic acid solvent system with the use of the oleate anion as a surface modifier of nanocrystals and glucose as a reducing agent. Specific conditions for homogenous precipitation achieved in such a reaction system lead to the formation of uniform high-quality nanocrystals down to 5 nm in diameter. The obtained hydrophobic nanocrystals can easily be converted to hydrophilic magnetic nanoparticles by being immobilized in a poly(l-lactide)–polyethyleneimine polymeric matrix. These hybrid nano-constructs may find various biomedical applications, such as magnetic separation, gene transfection and/or magnetic resonance imaging.
T2  - Colloids and Surfaces B: Biointerfaces
T1  - The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles
SP  - 236
EP  - 243
VL  - 109
DO  - 10.1016/j.colsurfb.2013.03.053
ER  - 
@article{
author = "Stojanović, Zoran S. and Otoničar, Mojca and Lee, Jongwook and Stevanović, Magdalena and Hwang, Mintai P. and Lee, Hyi and Choi, Jonghoon and Uskoković, Dragan",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/163",
abstract = "We report a simple and green procedure for the preparation of magnetic iron oxide nanocrystals via solvothermal synthesis. The nanocrystal synthesis was carried out under mild conditions in the water–ethanol–oleic acid solvent system with the use of the oleate anion as a surface modifier of nanocrystals and glucose as a reducing agent. Specific conditions for homogenous precipitation achieved in such a reaction system lead to the formation of uniform high-quality nanocrystals down to 5 nm in diameter. The obtained hydrophobic nanocrystals can easily be converted to hydrophilic magnetic nanoparticles by being immobilized in a poly(l-lactide)–polyethyleneimine polymeric matrix. These hybrid nano-constructs may find various biomedical applications, such as magnetic separation, gene transfection and/or magnetic resonance imaging.",
journal = "Colloids and Surfaces B: Biointerfaces",
title = "The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles",
pages = "236-243",
volume = "109",
doi = "10.1016/j.colsurfb.2013.03.053"
}
12
14
14

Surface characterisation of mechanochemicaly activated carbon cloth

Đukić, Anđelka B.; Grbović Novaković, Jasmina; Stojanović, Zoran S.; Milanović, Igor; Vujasin, Radojka; Milošević, Sanja S.; Matović, Ljiljana Lj.

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Đukić, Anđelka B.
AU  - Grbović Novaković, Jasmina
AU  - Stojanović, Zoran S.
AU  - Milanović, Igor
AU  - Vujasin, Radojka
AU  - Milošević, Sanja S.
AU  - Matović, Ljiljana Lj.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/390
AB  - Adsorption on activated carbon cloth is an efficient procedure for removing pollutants from wastewaters, because this material possesses large specific area and high adsorption capacity. In
this study the activated carbon cloth was modified by mechanical milling in order to improve its sorption properties. The microstructure and morphology of the sample was investigated by XRD,
PSD and SEM and surface chemistry was characterized by potentiometric titrations. The result showed that microstructure and morphology was drastically changed with milling: particle sizes
reduction, agglomeration and the loss of fibrous structure occurred. These changes resulted in increase of the acidic and the base groups: the number of basic groups was increased by the factor of 11 while the number of acidic groups by the factor of 1.5.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Surface characterisation of mechanochemicaly activated carbon cloth
SP  - 126
EP  - 126
ER  - 
@conference{
author = "Đukić, Anđelka B. and Grbović Novaković, Jasmina and Stojanović, Zoran S. and Milanović, Igor and Vujasin, Radojka and Milošević, Sanja S. and Matović, Ljiljana Lj.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/390",
abstract = "Adsorption on activated carbon cloth is an efficient procedure for removing pollutants from wastewaters, because this material possesses large specific area and high adsorption capacity. In
this study the activated carbon cloth was modified by mechanical milling in order to improve its sorption properties. The microstructure and morphology of the sample was investigated by XRD,
PSD and SEM and surface chemistry was characterized by potentiometric titrations. The result showed that microstructure and morphology was drastically changed with milling: particle sizes
reduction, agglomeration and the loss of fibrous structure occurred. These changes resulted in increase of the acidic and the base groups: the number of basic groups was increased by the factor of 11 while the number of acidic groups by the factor of 1.5.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Surface characterisation of mechanochemicaly activated carbon cloth",
pages = "126-126"
}

Simultaneous Removal of Divalent Heavy Metals from Aqueous Solutions Using Raw and Mechanochemically Treated Interstratified Montmorillonite/Kaolinite Clay

Kumrić, Ksenija R.; Đukić, Anđelka B.; Trtić Petrović, Tatjana; Vukelić, Nikola S.; Stojanović, Zoran S.; Grbović Novaković, Jasmina; Matović, Ljiljana Lj.

(Washington, DC : ACS Publications, 2013)

TY  - JOUR
AU  - Kumrić, Ksenija R.
AU  - Đukić, Anđelka B.
AU  - Trtić Petrović, Tatjana
AU  - Vukelić, Nikola S.
AU  - Stojanović, Zoran S.
AU  - Grbović Novaković, Jasmina
AU  - Matović, Ljiljana Lj.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/357
AB  - The removal of Pb(II), Cd(II), Cu(II), and Zn(II) from aqueous solutions using (un)modified Serbian interstratified montmorillonite/kaolinite clay as an adsorbent was investigated. The clay was modified by mechanochemical activation for different time periods. X-ray diffraction patterns and particle size distributions were used to characterize the samples. Batch adsorption studies were conducted to optimize various conditions. The adsorption equilibrium was established within 60 min, and the maximum adsorption occurred in the pH range of 4.5–6.5. The milled clays exhibited greater equilibrium adsorption capacities (qe) for all of the metals than the raw clay. A difference in qe values for clays milled for 2 and 19 h could be observed only for initial concentrations (Ci) of ≥100 mg dm–3. This was related to the amorphization (i.e., exfoliation) of 19-h-milled clay particles. The adsorption equilibrium data of heavy metals on both raw and modified clays fit the Langmuir equation, although there were changes in the microstructure of the clay. The mechanochemical treatment of the clay reduced the amount of adsorbent necessary to achieve a highly efficient removal of heavy metals by a factor of 5. Thus, the mechanochemically treated interstratified clay can be considered as an efficient adsorbent for the simultaneous removal of divalent heavy metals.
PB  - Washington, DC : ACS Publications
T2  - Industrial and Engineering Chemistry Research
T1  - Simultaneous Removal of Divalent Heavy Metals from Aqueous Solutions Using Raw and Mechanochemically Treated Interstratified Montmorillonite/Kaolinite Clay
SP  - 7930
EP  - 7939
VL  - 52
IS  - 23
DO  - 10.1021/ie400257k
ER  - 
@article{
author = "Kumrić, Ksenija R. and Đukić, Anđelka B. and Trtić Petrović, Tatjana and Vukelić, Nikola S. and Stojanović, Zoran S. and Grbović Novaković, Jasmina and Matović, Ljiljana Lj.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/357",
abstract = "The removal of Pb(II), Cd(II), Cu(II), and Zn(II) from aqueous solutions using (un)modified Serbian interstratified montmorillonite/kaolinite clay as an adsorbent was investigated. The clay was modified by mechanochemical activation for different time periods. X-ray diffraction patterns and particle size distributions were used to characterize the samples. Batch adsorption studies were conducted to optimize various conditions. The adsorption equilibrium was established within 60 min, and the maximum adsorption occurred in the pH range of 4.5–6.5. The milled clays exhibited greater equilibrium adsorption capacities (qe) for all of the metals than the raw clay. A difference in qe values for clays milled for 2 and 19 h could be observed only for initial concentrations (Ci) of ≥100 mg dm–3. This was related to the amorphization (i.e., exfoliation) of 19-h-milled clay particles. The adsorption equilibrium data of heavy metals on both raw and modified clays fit the Langmuir equation, although there were changes in the microstructure of the clay. The mechanochemical treatment of the clay reduced the amount of adsorbent necessary to achieve a highly efficient removal of heavy metals by a factor of 5. Thus, the mechanochemically treated interstratified clay can be considered as an efficient adsorbent for the simultaneous removal of divalent heavy metals.",
publisher = "Washington, DC : ACS Publications",
journal = "Industrial and Engineering Chemistry Research",
title = "Simultaneous Removal of Divalent Heavy Metals from Aqueous Solutions Using Raw and Mechanochemically Treated Interstratified Montmorillonite/Kaolinite Clay",
pages = "7930-7939",
volume = "52",
number = "23",
doi = "10.1021/ie400257k"
}
29
27
30

Changes in Storage Properties of Hydrides Induced by Ion Irradiation

Grbović Novaković, Jasmina; Kurko, Sandra; Rašković Lovre, Željka; Milošević, Sanja S.; Milanović, Igor; Stojanović, Zoran S.; Vujasin, Radojka; Matović, Ljiljana Lj.

(Kaunas University of Technology, 2013)

TY  - JOUR
AU  - Grbović Novaković, Jasmina
AU  - Kurko, Sandra
AU  - Rašković Lovre, Željka
AU  - Milošević, Sanja S.
AU  - Milanović, Igor
AU  - Stojanović, Zoran S.
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana Lj.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/352
AB  - The influence of structural changes caused by irradiation with different ions, their energies and fluences on sorption properties has been investigated. Results suggest that there are several mechanisms of desorption depending on defect concentration, their interaction and ordering. It has been also demonstrated that the changes in near-surface area play the crucial role in hydrogen desorption kinetics. It is confirmed that there is possibility to control the thermodynamic parameters of these systems by controlling vacancies depth profile and concentration.
PB  - Kaunas University of Technology
T2  - Materials Science MEDZIAGOTYRA
T1  - Changes in Storage Properties of Hydrides Induced by Ion Irradiation
SP  - 134
EP  - 139
VL  - 19
IS  - 2
DO  - 10.5755/j01.ms.19.2.1579
ER  - 
@article{
author = "Grbović Novaković, Jasmina and Kurko, Sandra and Rašković Lovre, Željka and Milošević, Sanja S. and Milanović, Igor and Stojanović, Zoran S. and Vujasin, Radojka and Matović, Ljiljana Lj.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/352",
abstract = "The influence of structural changes caused by irradiation with different ions, their energies and fluences on sorption properties has been investigated. Results suggest that there are several mechanisms of desorption depending on defect concentration, their interaction and ordering. It has been also demonstrated that the changes in near-surface area play the crucial role in hydrogen desorption kinetics. It is confirmed that there is possibility to control the thermodynamic parameters of these systems by controlling vacancies depth profile and concentration.",
publisher = "Kaunas University of Technology",
journal = "Materials Science MEDZIAGOTYRA",
title = "Changes in Storage Properties of Hydrides Induced by Ion Irradiation",
pages = "134-139",
volume = "19",
number = "2",
doi = "10.5755/j01.ms.19.2.1579"
}
1
2
2

Nanoparticles of cobalt-substituted hydroxyapatite in regeneration of mandibular osteoporotic bones

Ignjatović, Nenad; Ajduković, Zorica; Savić, Vojin; Najman, Stevo; Mihailović, Dragan; Vasiljević, Perica; Stojanović, Zoran S.; Uskoković, Vuk; Uskoković, Dragan

(2013)

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Ajduković, Zorica
AU  - Savić, Vojin
AU  - Najman, Stevo
AU  - Mihailović, Dragan
AU  - Vasiljević, Perica
AU  - Stojanović, Zoran S.
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/572
AB  - Indications exist that paramagnetic calcium phosphates may be able to promote regeneration of bone faster than their regular, diamagnetic counterparts. In this study, analyzed was the influence of paramagnetic cobalt-substituted hydroxyapatite nanoparticles on osteoporotic alveolar bone regeneration in rats. Simultaneously, biocompatibility of the material was tested in vitro, on osteoblastic MC3T3-E1 and epithelial Caco-2 cells in culture. The material was shown to be biocompatible and nontoxic when added to epithelial monolayers in vitro, while it caused a substantial decrease in the cell viability as well as deformation of the cytoskeleton and cell morphology when incubated with the osteoblastic cells. In the course of 6 months after the implantation of the material containing different amounts of cobalt, ranging from 5 to 12 wt%, in the osteoporotic alveolar bone of the lower jaw, the following parameters were investigated: histopathological parameters, alkaline phosphatase and alveolar bone density. The best result in terms of osteoporotic bone tissue regeneration was observed for hydroxyapatite nanoparticles with the largest content of cobalt ions. The histological analysis showed a high level of reparatory ability of the nanoparticulate material implanted in the bone defect, paralleled by a corresponding increase in the alveolar bone density. The combined effect of growth factors from autologous plasma admixed to cobalt-substituted hydroxyapatite was furthermore shown to have a crucial effect on the augmented osteoporotic bone regeneration upon the implantation of the biomaterial investigated in this study.
T2  - Journal of Materials Science: Materials in Medicine
T1  - Nanoparticles of cobalt-substituted hydroxyapatite in regeneration of mandibular osteoporotic bones
SP  - 343
EP  - 354
VL  - 24
IS  - 2
DO  - 10.1007/s10856-012-4793-1
ER  - 
@article{
author = "Ignjatović, Nenad and Ajduković, Zorica and Savić, Vojin and Najman, Stevo and Mihailović, Dragan and Vasiljević, Perica and Stojanović, Zoran S. and Uskoković, Vuk and Uskoković, Dragan",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/572",
abstract = "Indications exist that paramagnetic calcium phosphates may be able to promote regeneration of bone faster than their regular, diamagnetic counterparts. In this study, analyzed was the influence of paramagnetic cobalt-substituted hydroxyapatite nanoparticles on osteoporotic alveolar bone regeneration in rats. Simultaneously, biocompatibility of the material was tested in vitro, on osteoblastic MC3T3-E1 and epithelial Caco-2 cells in culture. The material was shown to be biocompatible and nontoxic when added to epithelial monolayers in vitro, while it caused a substantial decrease in the cell viability as well as deformation of the cytoskeleton and cell morphology when incubated with the osteoblastic cells. In the course of 6 months after the implantation of the material containing different amounts of cobalt, ranging from 5 to 12 wt%, in the osteoporotic alveolar bone of the lower jaw, the following parameters were investigated: histopathological parameters, alkaline phosphatase and alveolar bone density. The best result in terms of osteoporotic bone tissue regeneration was observed for hydroxyapatite nanoparticles with the largest content of cobalt ions. The histological analysis showed a high level of reparatory ability of the nanoparticulate material implanted in the bone defect, paralleled by a corresponding increase in the alveolar bone density. The combined effect of growth factors from autologous plasma admixed to cobalt-substituted hydroxyapatite was furthermore shown to have a crucial effect on the augmented osteoporotic bone regeneration upon the implantation of the biomaterial investigated in this study.",
journal = "Journal of Materials Science: Materials in Medicine",
title = "Nanoparticles of cobalt-substituted hydroxyapatite in regeneration of mandibular osteoporotic bones",
pages = "343-354",
volume = "24",
number = "2",
doi = "10.1007/s10856-012-4793-1"
}
55
49
58

LiFePO4 nanocrystals synthesis by hydrothermal reduction method

Stojanović, Zoran S.; Kuzmanović, Maja; Tadić, Marin; Dominko, Robert; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Kuzmanović, Maja
AU  - Tadić, Marin
AU  - Dominko, Robert
AU  - Uskoković, Dragan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/405
AB  - The nanocrystals of LiFePO4 a cathode material for Li-ion batteries were synthesized by simple one – pot combined colloidal hydrothermal reduction approach. The influences of surfactant ratios on nanocrystal formation are investigated. Also extent of surface modification and agglomeration is assessed. The electrochemical performance of material is investigated on as prepared samples and on samples with carbonized surface layer. The XRD, TEM, SEM, FTIR, laser diffraction PSA, magnetic measurements and galvanostatic cycling are performed characterization techniques.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - LiFePO4 nanocrystals synthesis by hydrothermal reduction method
SP  - 76
EP  - 76
ER  - 
@conference{
author = "Stojanović, Zoran S. and Kuzmanović, Maja and Tadić, Marin and Dominko, Robert and Uskoković, Dragan",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/405",
abstract = "The nanocrystals of LiFePO4 a cathode material for Li-ion batteries were synthesized by simple one – pot combined colloidal hydrothermal reduction approach. The influences of surfactant ratios on nanocrystal formation are investigated. Also extent of surface modification and agglomeration is assessed. The electrochemical performance of material is investigated on as prepared samples and on samples with carbonized surface layer. The XRD, TEM, SEM, FTIR, laser diffraction PSA, magnetic measurements and galvanostatic cycling are performed characterization techniques.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "LiFePO4 nanocrystals synthesis by hydrothermal reduction method",
pages = "76-76"
}