Veselinović, Ljiljana M.

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Authority KeyName Variants
orcid::0000-0002-6100-9178
  • Veselinović, Ljiljana M. (33)
  • Veselinovic, Ljiljana (3)
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Author's Bibliography

On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study

Milović, Miloš; Vasić Anićijević, Dragana D.; Jugović, Dragana; Anićijević, Vladan J.; Veselinović, Ljiljana M.; Mitrić, Miodrag; Uskoković, Dragan

(2019)

TY  - JOUR
AU  - Milović, Miloš
AU  - Vasić Anićijević, Dragana D.
AU  - Jugović, Dragana
AU  - Anićijević, Vladan J.
AU  - Veselinović, Ljiljana M.
AU  - Mitrić, Miodrag
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8021
AB  - Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system. © 2018 Elsevier Masson SAS
T2  - Solid State Sciences
T1  - On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study
VL  - 87
SP  - 81
EP  - 86
DO  - 10.1016/j.solidstatesciences.2018.11.008
ER  - 
@article{
author = "Milović, Miloš and Vasić Anićijević, Dragana D. and Jugović, Dragana and Anićijević, Vladan J. and Veselinović, Ljiljana M. and Mitrić, Miodrag and Uskoković, Dragan",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8021",
abstract = "Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system. © 2018 Elsevier Masson SAS",
journal = "Solid State Sciences",
title = "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study",
volume = "87",
pages = "81-86",
doi = "10.1016/j.solidstatesciences.2018.11.008"
}
Milović, M., Vasić Anićijević, D. D., Jugović, D., Anićijević, V. J., Veselinović, L. M., Mitrić, M.,& Uskoković, D. (2019). On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study.
Solid State Sciences, 87, 81-86.
https://doi.org/10.1016/j.solidstatesciences.2018.11.008
Milović M, Vasić Anićijević DD, Jugović D, Anićijević VJ, Veselinović LM, Mitrić M, Uskoković D. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences. 2019;87:81-86
Milović Miloš, Vasić Anićijević Dragana D., Jugović Dragana, Anićijević Vladan J., Veselinović Ljiljana M., Mitrić Miodrag, Uskoković Dragan, "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study" Solid State Sciences, 87 (2019):81-86,
https://doi.org/10.1016/j.solidstatesciences.2018.11.008 .
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On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study

Milović, Miloš; Vasić Anićijević, Dragana D.; Jugović, Dragana; Anićijević, Vladan J.; Veselinović, Ljiljana M.; Mitrić, Miodrag; Uskoković, Dragan

(2019)

TY  - JOUR
AU  - Milović, Miloš
AU  - Vasić Anićijević, Dragana D.
AU  - Jugović, Dragana
AU  - Anićijević, Vladan J.
AU  - Veselinović, Ljiljana M.
AU  - Mitrić, Miodrag
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8017
AB  - Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system. © 2018 Elsevier Masson SAS
T2  - Solid State Sciences
T1  - On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study
VL  - 87
SP  - 81
EP  - 86
DO  - 10.1016/j.solidstatesciences.2018.11.008
ER  - 
@article{
author = "Milović, Miloš and Vasić Anićijević, Dragana D. and Jugović, Dragana and Anićijević, Vladan J. and Veselinović, Ljiljana M. and Mitrić, Miodrag and Uskoković, Dragan",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8017",
abstract = "Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system. © 2018 Elsevier Masson SAS",
journal = "Solid State Sciences",
title = "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study",
volume = "87",
pages = "81-86",
doi = "10.1016/j.solidstatesciences.2018.11.008"
}
Milović, M., Vasić Anićijević, D. D., Jugović, D., Anićijević, V. J., Veselinović, L. M., Mitrić, M.,& Uskoković, D. (2019). On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study.
Solid State Sciences, 87, 81-86.
https://doi.org/10.1016/j.solidstatesciences.2018.11.008
Milović M, Vasić Anićijević DD, Jugović D, Anićijević VJ, Veselinović LM, Mitrić M, Uskoković D. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences. 2019;87:81-86
Milović Miloš, Vasić Anićijević Dragana D., Jugović Dragana, Anićijević Vladan J., Veselinović Ljiljana M., Mitrić Miodrag, Uskoković Dragan, "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study" Solid State Sciences, 87 (2019):81-86,
https://doi.org/10.1016/j.solidstatesciences.2018.11.008 .
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Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging

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

(2019)

TY  - JOUR
AU  - Ignjatović, Nenad L.
AU  - Mančić, Lidija
AU  - Vuković, Marina
AU  - Stojanović, Zoran S.
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Jovanović, Sonja
AU  - Veselinović, Ljiljana M.
AU  - Uskoković, Vuk
AU  - Lazić, Snežana
AU  - Marković, Smilja
AU  - Lazarević, Miloš M.
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8625
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. © 2019, The Author(s).
T2  - Scientific Reports
T1  - Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging
VL  - 9
IS  - 1
SP  - 16305
DO  - 10.1038/s41598-019-52885-0
ER  - 
@article{
author = "Ignjatović, Nenad L. and Mančić, Lidija and Vuković, Marina and Stojanović, Zoran S. and Nikolić, Marko G. and Škapin, Srečo Davor and Jovanović, Sonja and Veselinović, Ljiljana M. and Uskoković, Vuk and Lazić, Snežana and Marković, Smilja and Lazarević, Miloš M. and Uskoković, Dragan",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8625",
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. © 2019, The Author(s).",
journal = "Scientific Reports",
title = "Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging",
volume = "9",
number = "1",
pages = "16305",
doi = "10.1038/s41598-019-52885-0"
}
Ignjatović, N. L., Mančić, L., Vuković, M., Stojanović, Z. S., Nikolić, M. G., Škapin, S. D., Jovanović, S., Veselinović, L. M., Uskoković, V., Lazić, S., Marković, S., Lazarević, M. M.,& Uskoković, D. (2019). Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging.
Scientific Reports, 9(1), 16305.
https://doi.org/10.1038/s41598-019-52885-0
Ignjatović NL, Mančić L, Vuković M, Stojanović ZS, Nikolić MG, Škapin SD, Jovanović S, Veselinović LM, Uskoković V, Lazić S, Marković S, Lazarević MM, Uskoković D. Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging. Scientific Reports. 2019;9(1):16305
Ignjatović Nenad L., Mančić Lidija, Vuković Marina, Stojanović Zoran S., Nikolić Marko G., Škapin Srečo Davor, Jovanović Sonja, Veselinović Ljiljana M., Uskoković Vuk, Lazić Snežana, Marković Smilja, Lazarević Miloš M., Uskoković Dragan, "Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging" Scientific Reports, 9, no. 1 (2019):16305,
https://doi.org/10.1038/s41598-019-52885-0 .
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Inert atmosphere processing of hydroxyapatite in the presence of lithium iron phosphate

(2018)

TY  - JOUR
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7580
AB  - The present study describes sintering behaviour of hydroxyapatite (HAp) upon addition of lithium iron phosphate (LFP) (1-10 wt.%) system in inert (Ar) atmosphere. The interaction between materials and melting of LFP influenced early and intermediate stages of HAp sintering, shifting the densification curves towards low-temperature side. Analysis of densification process indicated significant differences upon LFP addition. The reaction mechanism that assumes the initial interaction between phosphates from LFP and calcium from HAp was proposed, generating calcium vacancies and contributing to HAp densification. Cross-sections of sintered samples showed changes in microstructural properties, with uniform atomic distribution and presence of Li2Fe3O4 spherical inclusions (200 nm) located at grain boundaries of calcium phosphate matrix. The Rietveld refinement analysis indicated changes in structural and microstructural parameters like crystallite size, anisotropy and microstructural strain of HAp upon LFP addition. Mechanical characterisation indicated improvements in fracture behaviour upon LFP addition.
T2  - Journal of the European Ceramic Society
T1  - Inert atmosphere processing of hydroxyapatite in the presence of lithium iron phosphate
VL  - 38
SP  - 2120
EP  - 2133
DO  - 10.1016/j.jeurceramsoc.2017.12.023
ER  - 
@article{
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7580",
abstract = "The present study describes sintering behaviour of hydroxyapatite (HAp) upon addition of lithium iron phosphate (LFP) (1-10 wt.%) system in inert (Ar) atmosphere. The interaction between materials and melting of LFP influenced early and intermediate stages of HAp sintering, shifting the densification curves towards low-temperature side. Analysis of densification process indicated significant differences upon LFP addition. The reaction mechanism that assumes the initial interaction between phosphates from LFP and calcium from HAp was proposed, generating calcium vacancies and contributing to HAp densification. Cross-sections of sintered samples showed changes in microstructural properties, with uniform atomic distribution and presence of Li2Fe3O4 spherical inclusions (200 nm) located at grain boundaries of calcium phosphate matrix. The Rietveld refinement analysis indicated changes in structural and microstructural parameters like crystallite size, anisotropy and microstructural strain of HAp upon LFP addition. Mechanical characterisation indicated improvements in fracture behaviour upon LFP addition.",
journal = "Journal of the European Ceramic Society",
title = "Inert atmosphere processing of hydroxyapatite in the presence of lithium iron phosphate",
volume = "38",
pages = "2120-2133",
doi = "10.1016/j.jeurceramsoc.2017.12.023"
}
 (2018). Inert atmosphere processing of hydroxyapatite in the presence of lithium iron phosphate.
Journal of the European Ceramic Society, 38, 2120-2133.
https://doi.org/10.1016/j.jeurceramsoc.2017.12.023
 Inert atmosphere processing of hydroxyapatite in the presence of lithium iron phosphate. Journal of the European Ceramic Society. 2018;38:2120-2133
, "Inert atmosphere processing of hydroxyapatite in the presence of lithium iron phosphate" Journal of the European Ceramic Society, 38 (2018):2120-2133,
https://doi.org/10.1016/j.jeurceramsoc.2017.12.023 .
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Effect of PEO molecular weight on sunlight induced photocatalytic activity of ZnO/PEO composites

Markovic, Smilja; Rajić, Vladimir; Stanković, Ana; Veselinovic, Ljiljana; Belošević-Čavor, Jelena; Batalović, Katarina; Abazović, Nadica; Škapin, Srečo Davor; Uskoković, Dragan

(2016)

TY  - JOUR
AU  - Markovic, Smilja
AU  - Rajić, Vladimir
AU  - Stanković, Ana
AU  - Veselinovic, Ljiljana
AU  - Belošević-Čavor, Jelena
AU  - Batalović, Katarina
AU  - Abazović, Nadica
AU  - Škapin, Srečo Davor
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/963
AB  - ZnO spheroidal nanoparticles, synthesized by microwave processing, were used for preparation of composites with polyethylene oxide (PEO). The phase purity and crystal structure of the composites were investigated by X-ray diffraction (XRD) and Raman spectroscopy. The composites particles morphology and size distributions were studied by FE-SEM and laser diffraction particle size analyzer, respectively. The optical properties were studied using UV Vis diffuse reflectance and photoluminescence spectroscopy. It is found that in the wavelength range 550-800 nm, ZnO and ZnO/PEO composites absorb about 50% of the incident light intensity. Also red-shift of band gap energy (0.12-0.15 eV) compared to bulk ZnO was determined. The effect of PEO molecular weights, 200,000, 600,000 and 900,000 g/mol, on photocatalytic activity of ZnO/PEO composites were examined via de-colorization of methylene blue (MB) under direct sunlight irradiation. A large efficiency of MB de-colorization was found after 6 h of irradiation. The enhanced photocatalytic activity of ZnO/PEO composites is attributed to the: (1) lattice defects introduced in ZnO crystal structure by rapid microwave processing, and (2) presence of PEO as a source of oxygen interstitials. In order to confirm and further clarify the experimental results ab initio calculations based on density functional theory (DFT) were performed. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Solar Energy
T1  - Effect of PEO molecular weight on sunlight induced photocatalytic activity of ZnO/PEO composites
VL  - 127
SP  - 124
EP  - 135
DO  - 10.1016/j.solener.2016.01.026
ER  - 
@article{
author = "Markovic, Smilja and Rajić, Vladimir and Stanković, Ana and Veselinovic, Ljiljana and Belošević-Čavor, Jelena and Batalović, Katarina and Abazović, Nadica and Škapin, Srečo Davor and Uskoković, Dragan",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/963",
abstract = "ZnO spheroidal nanoparticles, synthesized by microwave processing, were used for preparation of composites with polyethylene oxide (PEO). The phase purity and crystal structure of the composites were investigated by X-ray diffraction (XRD) and Raman spectroscopy. The composites particles morphology and size distributions were studied by FE-SEM and laser diffraction particle size analyzer, respectively. The optical properties were studied using UV Vis diffuse reflectance and photoluminescence spectroscopy. It is found that in the wavelength range 550-800 nm, ZnO and ZnO/PEO composites absorb about 50% of the incident light intensity. Also red-shift of band gap energy (0.12-0.15 eV) compared to bulk ZnO was determined. The effect of PEO molecular weights, 200,000, 600,000 and 900,000 g/mol, on photocatalytic activity of ZnO/PEO composites were examined via de-colorization of methylene blue (MB) under direct sunlight irradiation. A large efficiency of MB de-colorization was found after 6 h of irradiation. The enhanced photocatalytic activity of ZnO/PEO composites is attributed to the: (1) lattice defects introduced in ZnO crystal structure by rapid microwave processing, and (2) presence of PEO as a source of oxygen interstitials. In order to confirm and further clarify the experimental results ab initio calculations based on density functional theory (DFT) were performed. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Solar Energy",
title = "Effect of PEO molecular weight on sunlight induced photocatalytic activity of ZnO/PEO composites",
volume = "127",
pages = "124-135",
doi = "10.1016/j.solener.2016.01.026"
}
Markovic, S., Rajić, V., Stanković, A., Veselinovic, L., Belošević-Čavor, J., Batalović, K., Abazović, N., Škapin, S. D.,& Uskoković, D. (2016). Effect of PEO molecular weight on sunlight induced photocatalytic activity of ZnO/PEO composites.
Solar Energy, 127, 124-135.
https://doi.org/10.1016/j.solener.2016.01.026
Markovic S, Rajić V, Stanković A, Veselinovic L, Belošević-Čavor J, Batalović K, Abazović N, Škapin SD, Uskoković D. Effect of PEO molecular weight on sunlight induced photocatalytic activity of ZnO/PEO composites. Solar Energy. 2016;127:124-135
Markovic Smilja, Rajić Vladimir, Stanković Ana, Veselinovic Ljiljana, Belošević-Čavor Jelena, Batalović Katarina, Abazović Nadica, Škapin Srečo Davor, Uskoković Dragan, "Effect of PEO molecular weight on sunlight induced photocatalytic activity of ZnO/PEO composites" Solar Energy, 127 (2016):124-135,
https://doi.org/10.1016/j.solener.2016.01.026 .
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Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies

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

(2016)

TY  - JOUR
AU  - Stojanović, Zoran S.
AU  - Ignjatović, Nenad L.
AU  - Wu, Victoria
AU  - Žunič, Vojka
AU  - Veselinović, Ljiljana M.
AU  - Škapin, Srečo Davor
AU  - Miljković, Miroslav
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7575
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
VL  - 68
SP  - 746
EP  - 757
DO  - 10.1016/j.msec.2016.06.047
ER  - 
@article{
author = "Stojanović, Zoran S. and Ignjatović, Nenad L. and Wu, Victoria and Žunič, Vojka and Veselinović, Ljiljana M. and Škapin, Srečo Davor and Miljković, Miroslav and Uskoković, Vuk and Uskoković, Dragan",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7575",
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",
volume = "68",
pages = "746-757",
doi = "10.1016/j.msec.2016.06.047"
}
Stojanović, Z. S., Ignjatović, N. L., Wu, V., Žunič, V., Veselinović, L. M., Škapin, S. D., Miljković, M., Uskoković, V.,& Uskoković, D. (2016). Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies.
Materials Science and Engineering: C, 68, 746-757.
https://doi.org/10.1016/j.msec.2016.06.047
Stojanović ZS, Ignjatović NL, Wu V, Žunič V, Veselinović LM, Škapin SD, Miljković M, Uskoković V, Uskoković D. Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies. Materials Science and Engineering: C. 2016;68:746-757
Stojanović Zoran S., Ignjatović Nenad L., Wu Victoria, Žunič Vojka, Veselinović Ljiljana M., Škapin Srečo Davor, Miljković Miroslav, Uskoković Vuk, Uskoković Dragan, "Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies" Materials Science and Engineering: C, 68 (2016):746-757,
https://doi.org/10.1016/j.msec.2016.06.047 .
25
21
26

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

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

(Elsevier, 2016)

TY  - JOUR
AU  - Stojanović, Zoran S.
AU  - Ignjatović, Nenad L.
AU  - Wu, Victoria
AU  - Žunič, Vojka
AU  - Veselinović, Ljiljana M.
AU  - Škapin, Srečo Davor
AU  - Miljković, Miroslav
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7576
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
VL  - 68
SP  - 746
EP  - 757
DO  - 10.1016/j.msec.2016.06.047
ER  - 
@article{
author = "Stojanović, Zoran S. and Ignjatović, Nenad L. and Wu, Victoria and Žunič, Vojka and Veselinović, Ljiljana M. and Škapin, Srečo Davor and Miljković, Miroslav and Uskoković, Vuk and Uskoković, Dragan",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7576",
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",
volume = "68",
pages = "746-757",
doi = "10.1016/j.msec.2016.06.047"
}
Stojanović, Z. S., Ignjatović, N. L., Wu, V., Žunič, V., Veselinović, L. M., Škapin, S. D., Miljković, M., Uskoković, V.,& Uskoković, D. (2016). Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies.
Materials Science and Engineering: C
Elsevier., 68, 746-757.
https://doi.org/10.1016/j.msec.2016.06.047
Stojanović ZS, Ignjatović NL, Wu V, Žunič V, Veselinović LM, Škapin SD, Miljković M, Uskoković V, Uskoković D. Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies. Materials Science and Engineering: C. 2016;68:746-757
Stojanović Zoran S., Ignjatović Nenad L., Wu Victoria, Žunič Vojka, Veselinović Ljiljana M., Škapin Srečo Davor, Miljković Miroslav, Uskoković Vuk, Uskoković Dragan, "Hydrothermally processed 1D hydroxyapatite: Mechanism of formation and biocompatibility studies" Materials Science and Engineering: C, 68 (2016):746-757,
https://doi.org/10.1016/j.msec.2016.06.047 .
25
21
25

New insights into BaTi1-xSnxO3 (0 LT = x LT = 0.20) phase diagram from neutron diffraction data

Veselinovic, Ljiljana; Mitrić, Miodrag; Avdeev, Maxim; Markovic, Smilja; Uskoković, Dragan

(2016)

TY  - JOUR
AU  - Veselinovic, Ljiljana
AU  - Mitrić, Miodrag
AU  - Avdeev, Maxim
AU  - Markovic, Smilja
AU  - Uskoković, Dragan
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1312
AB  - Neutron powder diffraction (NPD) was employed to further investigate the BaTi1-xSnxO3 (BTS) system previously studied by X-ray diffraction. The room-temperature phase compositions and crystal structures of BTS samples with x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20 were refined by the Rietveld method using NPD data. It is well known that barium titanate powder (x = 0) crystallizes in the tetragonal P4mm space group. The crystal structures of the samples with 0.025 LT = x LT = 0.07 were refined as mixtures of P4mm and Amm2 phases; those with x = 0.1 and 0.12 show the coexistence of rhombohedral R3m and cubic phases, while the samples with x = 0.15 and 0.20 crystallize in a single cubic Pm (3) over barm phase. Temperature-dependent NPD was used to characterize the BaTi0.95Sn0.05O3 sample at 273, 333 and 373 K, and it was found to form single-phase Amm2, P4mm and Pm (3) over barm structures at these respective temperatures. The NPD results are in agreement with data obtained by differential scanning calorimetry and dielectric permittivity measurements, which show a para-electric-ferroelectric transition (associated with structural transition) from Pm (3) over barm to P4mm at about 353 K followed by a P4mm to Amm2 phase transition at about 303 K.
T2  - Journal of Applied Crystallography
T1  - New insights into BaTi1-xSnxO3 (0 LT = x LT = 0.20) phase diagram from neutron diffraction data
VL  - 49
SP  - 1726
EP  - 1733
DO  - 10.1107/S1600576716013157
ER  - 
@article{
author = "Veselinovic, Ljiljana and Mitrić, Miodrag and Avdeev, Maxim and Markovic, Smilja and Uskoković, Dragan",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1312",
abstract = "Neutron powder diffraction (NPD) was employed to further investigate the BaTi1-xSnxO3 (BTS) system previously studied by X-ray diffraction. The room-temperature phase compositions and crystal structures of BTS samples with x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20 were refined by the Rietveld method using NPD data. It is well known that barium titanate powder (x = 0) crystallizes in the tetragonal P4mm space group. The crystal structures of the samples with 0.025 LT = x LT = 0.07 were refined as mixtures of P4mm and Amm2 phases; those with x = 0.1 and 0.12 show the coexistence of rhombohedral R3m and cubic phases, while the samples with x = 0.15 and 0.20 crystallize in a single cubic Pm (3) over barm phase. Temperature-dependent NPD was used to characterize the BaTi0.95Sn0.05O3 sample at 273, 333 and 373 K, and it was found to form single-phase Amm2, P4mm and Pm (3) over barm structures at these respective temperatures. The NPD results are in agreement with data obtained by differential scanning calorimetry and dielectric permittivity measurements, which show a para-electric-ferroelectric transition (associated with structural transition) from Pm (3) over barm to P4mm at about 353 K followed by a P4mm to Amm2 phase transition at about 303 K.",
journal = "Journal of Applied Crystallography",
title = "New insights into BaTi1-xSnxO3 (0 LT = x LT = 0.20) phase diagram from neutron diffraction data",
volume = "49",
pages = "1726-1733",
doi = "10.1107/S1600576716013157"
}
Veselinovic, L., Mitrić, M., Avdeev, M., Markovic, S.,& Uskoković, D. (2016). New insights into BaTi1-xSnxO3 (0 LT = x LT = 0.20) phase diagram from neutron diffraction data.
Journal of Applied Crystallography, 49, 1726-1733.
https://doi.org/10.1107/S1600576716013157
Veselinovic L, Mitrić M, Avdeev M, Markovic S, Uskoković D. New insights into BaTi1-xSnxO3 (0 LT = x LT = 0.20) phase diagram from neutron diffraction data. Journal of Applied Crystallography. 2016;49:1726-1733
Veselinovic Ljiljana, Mitrić Miodrag, Avdeev Maxim, Markovic Smilja, Uskoković Dragan, "New insights into BaTi1-xSnxO3 (0 LT = x LT = 0.20) phase diagram from neutron diffraction data" Journal of Applied Crystallography, 49 (2016):1726-1733,
https://doi.org/10.1107/S1600576716013157 .
1
10
7
10

The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1-xSnxO3 (0 LT = x LT = 0.20)

Veselinovic, Ljiljana; Mitrić, Miodrag; Mancic, Lidija; Vukomanovic, Marija; Hadžić, Branka B.; Markovic, Smilja; Uskoković, Dragan

(2014)

TY  - JOUR
AU  - Veselinovic, Ljiljana
AU  - Mitrić, Miodrag
AU  - Mancic, Lidija
AU  - Vukomanovic, Marija
AU  - Hadžić, Branka B.
AU  - Markovic, Smilja
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6022
AB  - The effect of Sn for Ti substitution on the crystal structure of a perovskite, barium titanate stannate (BTS), BaTi1-xSnxO3 for x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20, was investigated. The powders were prepared by the conventional solid-state reaction technique. The structural investigations of the BTS powders were done at room temperature by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED) and Raman spectroscopy analyses. Rietveld refinement of XRD data indicates that gradual replacement of titanium by tin in BaTiO3 provokes a phase transition from tetragonal for 0 LT = x LT = 0.07 to cubic for x = 0.12, 0.15 and 0.20. The coexistence of tetragonal (P4mm) and cubic (Pm (3) over barm) crystal phases was established in powder with nominal composition BaTi0.9Sn0.1O3. The crystal phases determined by Rietveld refinement were confirmed by HRTEM and SAED analyses. The crystal structures of the BTS powders at short-range scale were studied by Raman spectroscopy, which shows tetragonal (P4mm) and a small fraction of orthorhombic (Pmm2) crystal phases for all the examined BTS powders, implying a lower local ordering when compared to the average symmetry.
T2  - Journal of Applied Crystallography
T1  - The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1-xSnxO3 (0 LT = x LT = 0.20)
VL  - 47
SP  - 999
EP  - 1007
DO  - 10.1107/S1600576714007584
ER  - 
@article{
author = "Veselinovic, Ljiljana and Mitrić, Miodrag and Mancic, Lidija and Vukomanovic, Marija and Hadžić, Branka B. and Markovic, Smilja and Uskoković, Dragan",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/6022",
abstract = "The effect of Sn for Ti substitution on the crystal structure of a perovskite, barium titanate stannate (BTS), BaTi1-xSnxO3 for x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20, was investigated. The powders were prepared by the conventional solid-state reaction technique. The structural investigations of the BTS powders were done at room temperature by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED) and Raman spectroscopy analyses. Rietveld refinement of XRD data indicates that gradual replacement of titanium by tin in BaTiO3 provokes a phase transition from tetragonal for 0 LT = x LT = 0.07 to cubic for x = 0.12, 0.15 and 0.20. The coexistence of tetragonal (P4mm) and cubic (Pm (3) over barm) crystal phases was established in powder with nominal composition BaTi0.9Sn0.1O3. The crystal phases determined by Rietveld refinement were confirmed by HRTEM and SAED analyses. The crystal structures of the BTS powders at short-range scale were studied by Raman spectroscopy, which shows tetragonal (P4mm) and a small fraction of orthorhombic (Pmm2) crystal phases for all the examined BTS powders, implying a lower local ordering when compared to the average symmetry.",
journal = "Journal of Applied Crystallography",
title = "The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1-xSnxO3 (0 LT = x LT = 0.20)",
volume = "47",
pages = "999-1007",
doi = "10.1107/S1600576714007584"
}
Veselinovic, L., Mitrić, M., Mancic, L., Vukomanovic, M., Hadžić, B. B., Markovic, S.,& Uskoković, D. (2014). The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1-xSnxO3 (0 LT = x LT = 0.20).
Journal of Applied Crystallography, 47, 999-1007.
https://doi.org/10.1107/S1600576714007584
Veselinovic L, Mitrić M, Mancic L, Vukomanovic M, Hadžić BB, Markovic S, Uskoković D. The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1-xSnxO3 (0 LT = x LT = 0.20). Journal of Applied Crystallography. 2014;47:999-1007
Veselinovic Ljiljana, Mitrić Miodrag, Mancic Lidija, Vukomanovic Marija, Hadžić Branka B., Markovic Smilja, Uskoković Dragan, "The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1-xSnxO3 (0 LT = x LT = 0.20)" Journal of Applied Crystallography, 47 (2014):999-1007,
https://doi.org/10.1107/S1600576714007584 .
1
15
13
13

Structural investigation of CaCu3B4O12 (B = Ti, Ru)

Veselinović, Ljiljana M.; Marković, Smilja; Lukić, Miodrag; Mančić, Lidija; Škapin, Srečo Davor; Mitrić, Miodrag; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2014)

TY  - CONF
AU  - Veselinović, Ljiljana M.
AU  - Marković, Smilja
AU  - Lukić, Miodrag
AU  - Mančić, Lidija
AU  - Škapin, Srečo Davor
AU  - Mitrić, Miodrag
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/562
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/830
UR  - http://www.itn.sanu.ac.rs/opus4/files/830/Veselinovic_YUCOMAT2014.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7478
AB  - Perovskite-related materials with the general formula AC3B4O12 have great technological significance due to their specific physical properties. The crystal structure of AC3B4O12 compounds is cubic with Im3 symmetry. Different cations can occupy A and B sites, while the C site is commonly occupied by Cu2+ or Mn3+ ions. It has been found that the nature of B cation changes the physical properties of the material. In our previous studies we dealt with CaCu3Ti4O12 (CCTO) and CaCu3Ru4O12 (CCRO) compounds. CCTO has the gigantic permittivity of 104105 in the kilohertz region and good stability over the temperature range from -170 to 330 °C. While Ti-compound is semiconductor, the Ru one is conductive oxide and could be used as interfaces between CCTO and metallic electrodes. Thus, CCTO and CCRO have potential application for preparation of layer capacitors with CCRO as the electrode and CCTO as the dielectric material. Since the oxygen vacancies and/or intrinsic defects in perovskites have a crucial role in the physical properties it is important to determine crystal structure of ceramic materials. In this work, a detailed structural investigation of CCTO and CCRO perovskites was performed. The powders were prepared by precipitation and successive calcination at 1100 °C with 3 h dwell time to obtained single phased materials. The phase composition and crystal structure of synthesized powders were studied by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED) and Raman spectroscopy analyses. Rietveld refinement of XRD data was used to calculate the powders stoichiometry. Furthermore, since the XRD method is not adequate for determination of oxygen atoms due to their small scattering factors, to confirm the (oxygen-) stoichiometry of the ceramic powders, thermogravimetric (TG) measurements were employed. Two sets of experiments were performed; powders were heated in a flowing: (1) air atmosphere, and (2) reducing atmosphere (mixture of 5% H2 with Ar; 20 ml/min), to 1100 °C with a heating rate 10 °C/min with 3 h dwell time. TG measurements were performed on system coupled to a quadrupole mass spectrometer used for determination of volatile compounds. The weight losses measured by TG, in two different atmospheres, were compared; minor deviations in stoichiometries of CaCu3B4O12 compounds determined by Rietveld refinement were corrected.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
T1  - Structural investigation of CaCu3B4O12 (B = Ti, Ru)
SP  - 67
EP  - 67
ER  - 
@conference{
author = "Veselinović, Ljiljana M. and Marković, Smilja and Lukić, Miodrag and Mančić, Lidija and Škapin, Srečo Davor and Mitrić, Miodrag and Uskoković, Dragan",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/562, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/830, http://www.itn.sanu.ac.rs/opus4/files/830/Veselinovic_YUCOMAT2014.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7478",
abstract = "Perovskite-related materials with the general formula AC3B4O12 have great technological significance due to their specific physical properties. The crystal structure of AC3B4O12 compounds is cubic with Im3 symmetry. Different cations can occupy A and B sites, while the C site is commonly occupied by Cu2+ or Mn3+ ions. It has been found that the nature of B cation changes the physical properties of the material. In our previous studies we dealt with CaCu3Ti4O12 (CCTO) and CaCu3Ru4O12 (CCRO) compounds. CCTO has the gigantic permittivity of 104105 in the kilohertz region and good stability over the temperature range from -170 to 330 °C. While Ti-compound is semiconductor, the Ru one is conductive oxide and could be used as interfaces between CCTO and metallic electrodes. Thus, CCTO and CCRO have potential application for preparation of layer capacitors with CCRO as the electrode and CCTO as the dielectric material. Since the oxygen vacancies and/or intrinsic defects in perovskites have a crucial role in the physical properties it is important to determine crystal structure of ceramic materials. In this work, a detailed structural investigation of CCTO and CCRO perovskites was performed. The powders were prepared by precipitation and successive calcination at 1100 °C with 3 h dwell time to obtained single phased materials. The phase composition and crystal structure of synthesized powders were studied by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED) and Raman spectroscopy analyses. Rietveld refinement of XRD data was used to calculate the powders stoichiometry. Furthermore, since the XRD method is not adequate for determination of oxygen atoms due to their small scattering factors, to confirm the (oxygen-) stoichiometry of the ceramic powders, thermogravimetric (TG) measurements were employed. Two sets of experiments were performed; powders were heated in a flowing: (1) air atmosphere, and (2) reducing atmosphere (mixture of 5% H2 with Ar; 20 ml/min), to 1100 °C with a heating rate 10 °C/min with 3 h dwell time. TG measurements were performed on system coupled to a quadrupole mass spectrometer used for determination of volatile compounds. The weight losses measured by TG, in two different atmospheres, were compared; minor deviations in stoichiometries of CaCu3B4O12 compounds determined by Rietveld refinement were corrected.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts",
title = "Structural investigation of CaCu3B4O12 (B = Ti, Ru)",
pages = "67-67"
}
Veselinović, L. M., Marković, S., Lukić, M., Mančić, L., Škapin, S. D., Mitrić, M.,& Uskoković, D. (2014). Structural investigation of CaCu3B4O12 (B = Ti, Ru).
The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 67-67.
Veselinović LM, Marković S, Lukić M, Mančić L, Škapin SD, Mitrić M, Uskoković D. Structural investigation of CaCu3B4O12 (B = Ti, Ru). The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts. 2014;:67-67
Veselinović Ljiljana M., Marković Smilja, Lukić Miodrag, Mančić Lidija, Škapin Srečo Davor, Mitrić Miodrag, Uskoković Dragan, "Structural investigation of CaCu3B4O12 (B = Ti, Ru)" The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts (2014):67-67

The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures

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

(2014)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Ignjatović, Nenad L.
AU  - Miljković, Miroslav
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/844
UR  - http://dais.sanu.ac.rs/123456789/576
UR  - http://www.itn.sanu.ac.rs/opus4/files/844/Stojanovic_Yucoma2014_poster.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7482
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 M. and Ignjatović, Nenad L. and Miljković, Miroslav and Uskoković, Dragan",
year = "2014",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/844, http://dais.sanu.ac.rs/123456789/576, http://www.itn.sanu.ac.rs/opus4/files/844/Stojanovic_Yucoma2014_poster.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7482",
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"
}
Stojanović, Z. S., Veselinović, L. M., Ignjatović, N. L., Miljković, M.,& Uskoković, D. (2014). The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures.
.
Stojanović ZS, Veselinović LM, Ignjatović NL, Miljković M, Uskoković D. The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures. 2014;
Stojanović Zoran S., Veselinović Ljiljana M., Ignjatović Nenad L., Miljković Miroslav, Uskoković Dragan, "The Hydrothermal Synthesis of 1D Biomedical Hydroxyapatite Nanostructures" (2014)

The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures

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

(Belgrade : Materials Research Society of Serbia, 2014)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Ignjatović, Nenad L.
AU  - Miljković, Miroslav
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/849
UR  - http://dais.sanu.ac.rs/123456789/581
UR  - http://www.itn.sanu.ac.rs/opus4/files/849/Stojanovic_YUCOMAT2014.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7484
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 M. and Ignjatović, Nenad L. and Miljković, Miroslav and Uskoković, Dragan",
year = "2014",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/849, http://dais.sanu.ac.rs/123456789/581, http://www.itn.sanu.ac.rs/opus4/files/849/Stojanovic_YUCOMAT2014.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7484",
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"
}
Stojanović, Z. S., Veselinović, L. M., Ignjatović, N. L., Miljković, M.,& Uskoković, D. (2014). The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures.
The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 63-63.
Stojanović ZS, Veselinović LM, Ignjatović NL, Miljković M, Uskoković D. The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures. The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts. 2014;:63-63
Stojanović Zoran S., Veselinović Ljiljana M., Ignjatović Nenad L., Miljković Miroslav, Uskoković Dragan, "The hydrothermal synthesis of 1d biomedical hydroxyapatite nanostructures" The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts (2014):63-63

Influence of particle size and morphology of ZnO powders on their optical properties

Stanković, Ana; Stojanović, Zoran S.; Veselinović, Ljiljana M.; Abazović, Nadica; Škapin, Srečo Davor; Marković, Smilja; Uskoković, Dragan

(Belgrade : Serbian Ceramic Society, 2012)

TY  - CONF
AU  - Stanković, Ana
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Abazović, Nadica
AU  - Škapin, Srečo Davor
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/529
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/796
UR  - http://www.itn.sanu.ac.rs/opus4/files/796/Stankovic_11KMI.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7471
AB  - In this work we present details of different synthesis procedures for preparation of ZnO powders and a possibility to create various particles morphology and average size; from micrometer rods to nanometer spherical particles. We studied two synthesis methods, low temperature hydrothermal processing (HT) and ultrasound processing (US). The morphology and average particle size of the ZnO particles were modified by adjusting the mole ratio of [Zn2+]/[OH] in the reactants solution. Agglomeration of the particles was prevented using a polyvinyl pyrrolidone (PVP) as a capping agent. The synthesized powders were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (FESEM) and UV-Vis - diffusion reflection spectroscopy (UV-Vis DRS). Based on the results of the scanning electron microscopy we proposed a possible growth mechanism of the ZnO particles depending on the mole ratio of [Zn2+]/[OH]. Also, we considered the influence of particle size and morphology on the optical properties of the prepared powders. The observed results sowed that the size and morphology of ZnO particles greatly affect the absorption of visible light (%) and the shift of the energy gap (eV).
PB  - Belgrade : Serbian Ceramic Society
C3  - Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
T1  - Influence of particle size and morphology of ZnO powders on their optical properties
SP  - 60
EP  - 60
ER  - 
@conference{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Abazović, Nadica and Škapin, Srečo Davor and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/529, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/796, http://www.itn.sanu.ac.rs/opus4/files/796/Stankovic_11KMI.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7471",
abstract = "In this work we present details of different synthesis procedures for preparation of ZnO powders and a possibility to create various particles morphology and average size; from micrometer rods to nanometer spherical particles. We studied two synthesis methods, low temperature hydrothermal processing (HT) and ultrasound processing (US). The morphology and average particle size of the ZnO particles were modified by adjusting the mole ratio of [Zn2+]/[OH] in the reactants solution. Agglomeration of the particles was prevented using a polyvinyl pyrrolidone (PVP) as a capping agent. The synthesized powders were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (FESEM) and UV-Vis - diffusion reflection spectroscopy (UV-Vis DRS). Based on the results of the scanning electron microscopy we proposed a possible growth mechanism of the ZnO particles depending on the mole ratio of [Zn2+]/[OH]. Also, we considered the influence of particle size and morphology on the optical properties of the prepared powders. The observed results sowed that the size and morphology of ZnO particles greatly affect the absorption of visible light (%) and the shift of the energy gap (eV).",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts",
title = "Influence of particle size and morphology of ZnO powders on their optical properties",
pages = "60-60"
}
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Abazović, N., Škapin, S. D., Marković, S.,& Uskoković, D. (2012). Influence of particle size and morphology of ZnO powders on their optical properties.
Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
Belgrade : Serbian Ceramic Society., 60-60.
Stanković A, Stojanović ZS, Veselinović LM, Abazović N, Škapin SD, Marković S, Uskoković D. Influence of particle size and morphology of ZnO powders on their optical properties. Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts. 2012;:60-60
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana M., Abazović Nadica, Škapin Srečo Davor, Marković Smilja, Uskoković Dragan, "Influence of particle size and morphology of ZnO powders on their optical properties" Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts (2012):60-60

Controlled hydrothermal processing of ZnO powders in the presence of PVP

Stanković, Ana; Stojanović, Zoran S.; Veselinović, Ljiljana M.; Marković, Smilja; Uskoković, Dragan

(Belgrade : Society of Physical Chemists of Serbia, 2012)

TY  - CONF
AU  - Stanković, Ana
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/530
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/797
UR  - http://www.itn.sanu.ac.rs/opus4/files/797/Stankovic_Physical%20Chemistry%202012.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7472
AB  - In this study low-temperature hydrothermal processing was used for synthesis of ZnO powders with controlled morphology, from micro rods, via hexagonal prism-like to nano-spheres, by varying [Zn2+]/[OH-] molar ratio. The synthesized powders were characterized using XRPD, FE-SEM, UV-Vis diffuse reflectance and Raman spectroscopy. It is noticed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased visible light absorption. Besides, the band gap energy of the synthesized ZnO powders showed the red shift (-0.20eV) compared to bulk ZnO. The enhanced visible light absorption of the ZnO powders is related to the existence of lattice defects and the particle surface sensitization by PVP.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia
T1  - Controlled hydrothermal processing of ZnO powders in the presence of PVP
SP  - 431
EP  - 433
ER  - 
@conference{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/530, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/797, http://www.itn.sanu.ac.rs/opus4/files/797/Stankovic_Physical%20Chemistry%202012.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7472",
abstract = "In this study low-temperature hydrothermal processing was used for synthesis of ZnO powders with controlled morphology, from micro rods, via hexagonal prism-like to nano-spheres, by varying [Zn2+]/[OH-] molar ratio. The synthesized powders were characterized using XRPD, FE-SEM, UV-Vis diffuse reflectance and Raman spectroscopy. It is noticed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased visible light absorption. Besides, the band gap energy of the synthesized ZnO powders showed the red shift (-0.20eV) compared to bulk ZnO. The enhanced visible light absorption of the ZnO powders is related to the existence of lattice defects and the particle surface sensitization by PVP.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia",
title = "Controlled hydrothermal processing of ZnO powders in the presence of PVP",
pages = "431-433"
}
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Marković, S.,& Uskoković, D. (2012). Controlled hydrothermal processing of ZnO powders in the presence of PVP.
Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia
Belgrade : Society of Physical Chemists of Serbia., 431-433.
Stanković A, Stojanović ZS, Veselinović LM, Marković S, Uskoković D. Controlled hydrothermal processing of ZnO powders in the presence of PVP. Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia. 2012;:431-433
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana M., Marković Smilja, Uskoković Dragan, "Controlled hydrothermal processing of ZnO powders in the presence of PVP" Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia (2012):431-433

Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics

Stanković, Ana; Stojanović, Zoran S.; Veselinović, Ljiljana M.; Bračko, Ines; Škapin, Srečo Davor; Marković, Smilja; Uskoković, Dragan

(2012)

TY  - CONF
AU  - Stanković, Ana
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Bračko, Ines
AU  - Škapin, Srečo Davor
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/145
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/380
UR  - http://www.itn.sanu.ac.rs/opus4/files/380/Stankovic_Yucomat2012.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7351
AB  - Poster presented at the 14th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2012, Herceg Novi, Montenegro, September 3–7, 2012
T1  - Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics
ER  - 
@conference{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Bračko, Ines and Škapin, Srečo Davor and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/145, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/380, http://www.itn.sanu.ac.rs/opus4/files/380/Stankovic_Yucomat2012.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7351",
abstract = "Poster presented at the 14th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2012, Herceg Novi, Montenegro, September 3–7, 2012",
title = "Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics"
}
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Bračko, I., Škapin, S. D., Marković, S.,& Uskoković, D. (2012). Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics.
.
Stanković A, Stojanović ZS, Veselinović LM, Bračko I, Škapin SD, Marković S, Uskoković D. Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics. 2012;
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana M., Bračko Ines, Škapin Srečo Davor, Marković Smilja, Uskoković Dragan, "Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics" (2012)

Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics

Stanković, Ana; Stojanović, Zoran S.; Veselinović, Ljiljana M.; Bračko, Ines; Škapin, Srečo Davor; Marković, Smilja; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2012)

TY  - CONF
AU  - Stanković, Ana
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Bračko, Ines
AU  - Škapin, Srečo Davor
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/697
UR  - http://dais.sanu.ac.rs/123456789/435
UR  - http://www.itn.sanu.ac.rs/opus4/files/697/Stankovic-Yucomat2012-47.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7437
AB  - ZnO represent one of the most important multifunctional materials. Its properties are well known and confirmed in different application areas such as: gas sensors, UV lasers, solar cells, electroluminescent and optoelectronic devices, piezoelectric transducers, hydrogen-storages, rubber industry and plastic processing, cosmetics and pharmacy, and it is also used as an antibacterial agent. In this work, we propose a low-temperature hydrothermal method for the synthesis of phase-pure ZnO powders with a controlled morphology and narrow particle size distribution. This simple and low-cost method allows tailoring of the shape and size of ZnO particles, from micro-rods via hexagonal prism-like to nano-spheres, by choosing the appropriate pH of the reaction solution, tuned by the varying of [Na+]:[Zn2+] molar ratio. The agglomeration of the powders was prevented with the assistance of PVP as a capping agent. The synthesized powders were characterized by XRD, TEM, SEAD and HRTEM methods to examine the phase purity and crystallinity. FE-SEM measurements were used for the morphology characterization, while the results of Raman and UV-Vis DRS measurements were used for the study of optical properties. The relationship between the particle size and morphology and the optical properties is discussed. Diffuse reflectance spectra of ZnO powders with different size and morphology revealed characteristic R curves with the absorption edge near 380 nm, but with obvious difference in the absorption in the visible region. The micro-sized powder ZnO8 revealed the lowest reflectance (∼70%), compared to submicro- (∼80%) and nano-sized (ZnO12 and ZnO13, ∼90%) powders. Thus, the reflectance of the ZnO powders decreases with the increase in the average particle size.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
T1  - Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics
SP  - 47
EP  - 47
ER  - 
@conference{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Bračko, Ines and Škapin, Srečo Davor and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/697, http://dais.sanu.ac.rs/123456789/435, http://www.itn.sanu.ac.rs/opus4/files/697/Stankovic-Yucomat2012-47.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7437",
abstract = "ZnO represent one of the most important multifunctional materials. Its properties are well known and confirmed in different application areas such as: gas sensors, UV lasers, solar cells, electroluminescent and optoelectronic devices, piezoelectric transducers, hydrogen-storages, rubber industry and plastic processing, cosmetics and pharmacy, and it is also used as an antibacterial agent. In this work, we propose a low-temperature hydrothermal method for the synthesis of phase-pure ZnO powders with a controlled morphology and narrow particle size distribution. This simple and low-cost method allows tailoring of the shape and size of ZnO particles, from micro-rods via hexagonal prism-like to nano-spheres, by choosing the appropriate pH of the reaction solution, tuned by the varying of [Na+]:[Zn2+] molar ratio. The agglomeration of the powders was prevented with the assistance of PVP as a capping agent. The synthesized powders were characterized by XRD, TEM, SEAD and HRTEM methods to examine the phase purity and crystallinity. FE-SEM measurements were used for the morphology characterization, while the results of Raman and UV-Vis DRS measurements were used for the study of optical properties. The relationship between the particle size and morphology and the optical properties is discussed. Diffuse reflectance spectra of ZnO powders with different size and morphology revealed characteristic R curves with the absorption edge near 380 nm, but with obvious difference in the absorption in the visible region. The micro-sized powder ZnO8 revealed the lowest reflectance (∼70%), compared to submicro- (∼80%) and nano-sized (ZnO12 and ZnO13, ∼90%) powders. Thus, the reflectance of the ZnO powders decreases with the increase in the average particle size.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts",
title = "Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics",
pages = "47-47"
}
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Bračko, I., Škapin, S. D., Marković, S.,& Uskoković, D. (2012). Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics.
The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 47-47.
Stanković A, Stojanović ZS, Veselinović LM, Bračko I, Škapin SD, Marković S, Uskoković D. Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics. The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts. 2012;:47-47
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana M., Bračko Ines, Škapin Srečo Davor, Marković Smilja, Uskoković Dragan, "Hydrothermal synthesis of ZnO powders with a tailored particle morphology and improved optical characteristics" The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts (2012):47-47

Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders

Lukić, Miodrag; Veselinović, Ljiljana M.; Stojanović, Zoran S.; Maček Kržmanc, Marjeta; Bračko, Ines; Škapin, Srečo Davor; Marković, Smilja; Uskoković, Dragan

(Elsevier, 2012)

TY  - JOUR
AU  - Lukić, Miodrag
AU  - Veselinović, Ljiljana M.
AU  - Stojanović, Zoran S.
AU  - Maček Kržmanc, Marjeta
AU  - Bračko, Ines
AU  - Škapin, Srečo Davor
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/476
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/740
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7447
AB  - We report unusual sintering behavior of Ca-deficient hydroxyapatite processed with different heating rates; particularly, faster heating resulted in higher densification. We hypothesize that faster heating delays formation of β-tricalcium phosphate which yields to unobstructed densification in intermediate sintering stage, allowing further tailoring of both microstructure and phase composition (hydroxyapatite/tricalcium phosphate).
PB  - Elsevier
T2  - Materials Letters
T1  - Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders
SP  - 331
EP  - 335
DO  - 10.1016/j.matlet.2011.10.085
ER  - 
@article{
author = "Lukić, Miodrag and Veselinović, Ljiljana M. and Stojanović, Zoran S. and Maček Kržmanc, Marjeta and Bračko, Ines and Škapin, Srečo Davor and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/476, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/740, http://vinar.vin.bg.ac.rs/handle/123456789/7447",
abstract = "We report unusual sintering behavior of Ca-deficient hydroxyapatite processed with different heating rates; particularly, faster heating resulted in higher densification. We hypothesize that faster heating delays formation of β-tricalcium phosphate which yields to unobstructed densification in intermediate sintering stage, allowing further tailoring of both microstructure and phase composition (hydroxyapatite/tricalcium phosphate).",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders",
pages = "331-335",
doi = "10.1016/j.matlet.2011.10.085"
}
Lukić, M., Veselinović, L. M., Stojanović, Z. S., Maček Kržmanc, M., Bračko, I., Škapin, S. D., Marković, S.,& Uskoković, D. (2012). Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders.
Materials Letters
Elsevier., 331-335.
https://doi.org/10.1016/j.matlet.2011.10.085
Lukić M, Veselinović LM, Stojanović ZS, Maček Kržmanc M, Bračko I, Škapin SD, Marković S, Uskoković D. Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders. Materials Letters. 2012;:331-335
Lukić Miodrag, Veselinović Ljiljana M., Stojanović Zoran S., Maček Kržmanc Marjeta, Bračko Ines, Škapin Srečo Davor, Marković Smilja, Uskoković Dragan, "Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders" Materials Letters (2012):331-335,
https://doi.org/10.1016/j.matlet.2011.10.085 .
11
12
11

ZnO micro and nanocrystals with enhanced visible light absorption

Stanković, Ana; Stojanović, Zoran S.; Veselinović, Ljiljana M.; Škapin, Srečo Davor; Bračko, Ines; Marković, Smilja; Uskoković, Dragan

(Elsevier, 2012)

TY  - JOUR
AU  - Stanković, Ana
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Škapin, Srečo Davor
AU  - Bračko, Ines
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/486
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/751
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7450
AB  - In this paper, we investigate the effect of the particle size and morphology on the optical properties of ZnO. A series of ZnO micro and nanocrystals were synthesized by the hydrothermal processing of zinc acetate dihydrate and sodium hydroxide as the starting materials, and polyvinylpyrrolidone (PVP) as the polymer surfactant. The particle size and morphology were tailored by adjusting the reactant molar ratios [Zn2+]/[OH−], while the reaction temperature and the time remained unchanged. X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and high-resolution TEM (HRTEM) have shown that the micro and nanocrystals have a high crystalline pure wurtzite-type hexagonal structure with nanosized crystallites. The size and morphology of the ZnO micro and nanocrystals were investigated by field emission scanning electron microscopy (FE-SEM), which showed a modification from micro-rods via hexagonal-faceted prismatic morphology to nanospheres, caused by simple adjustment of the reactant molar ratio [Zn2+]/[OH−] from 1:1 to 1:5. The optical properties of the ZnO micro and nanocrystals, as well as their dependence on the particle size and morphology were investigated by Raman and ultraviolet–visible (UV–vis) diffuse reflectance spectroscopy (DRS). The UV–vis spectra showed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased absorption, and a slight red-shift of the absorption edge (0.06 eV). Besides, the band gap energy of the synthesized ZnO micro and nanocrystals showed the red shift (∼0.20 eV) compared to bulk ZnO. According to the results of a Raman spectroscopy, the enhanced visible light absorption of the ZnO micro and nanocrystals is related to two phenomena: (1) the existence of lattice defects (oxygen vacancies and zinc interstitials), and (2) the particle surface sensitization by PVP.
PB  - Elsevier
T2  - Materials Science and Engineering: B
T1  - ZnO micro and nanocrystals with enhanced visible light absorption
SP  - 1038
EP  - 1045
DO  - 10.1016/j.mseb.2012.05.013
ER  - 
@article{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Škapin, Srečo Davor and Bračko, Ines and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/486, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/751, http://vinar.vin.bg.ac.rs/handle/123456789/7450",
abstract = "In this paper, we investigate the effect of the particle size and morphology on the optical properties of ZnO. A series of ZnO micro and nanocrystals were synthesized by the hydrothermal processing of zinc acetate dihydrate and sodium hydroxide as the starting materials, and polyvinylpyrrolidone (PVP) as the polymer surfactant. The particle size and morphology were tailored by adjusting the reactant molar ratios [Zn2+]/[OH−], while the reaction temperature and the time remained unchanged. X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and high-resolution TEM (HRTEM) have shown that the micro and nanocrystals have a high crystalline pure wurtzite-type hexagonal structure with nanosized crystallites. The size and morphology of the ZnO micro and nanocrystals were investigated by field emission scanning electron microscopy (FE-SEM), which showed a modification from micro-rods via hexagonal-faceted prismatic morphology to nanospheres, caused by simple adjustment of the reactant molar ratio [Zn2+]/[OH−] from 1:1 to 1:5. The optical properties of the ZnO micro and nanocrystals, as well as their dependence on the particle size and morphology were investigated by Raman and ultraviolet–visible (UV–vis) diffuse reflectance spectroscopy (DRS). The UV–vis spectra showed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased absorption, and a slight red-shift of the absorption edge (0.06 eV). Besides, the band gap energy of the synthesized ZnO micro and nanocrystals showed the red shift (∼0.20 eV) compared to bulk ZnO. According to the results of a Raman spectroscopy, the enhanced visible light absorption of the ZnO micro and nanocrystals is related to two phenomena: (1) the existence of lattice defects (oxygen vacancies and zinc interstitials), and (2) the particle surface sensitization by PVP.",
publisher = "Elsevier",
journal = "Materials Science and Engineering: B",
title = "ZnO micro and nanocrystals with enhanced visible light absorption",
pages = "1038-1045",
doi = "10.1016/j.mseb.2012.05.013"
}
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Škapin, S. D., Bračko, I., Marković, S.,& Uskoković, D. (2012). ZnO micro and nanocrystals with enhanced visible light absorption.
Materials Science and Engineering: B
Elsevier., 1038-1045.
https://doi.org/10.1016/j.mseb.2012.05.013
Stanković A, Stojanović ZS, Veselinović LM, Škapin SD, Bračko I, Marković S, Uskoković D. ZnO micro and nanocrystals with enhanced visible light absorption. Materials Science and Engineering: B. 2012;:1038-1045
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana M., Škapin Srečo Davor, Bračko Ines, Marković Smilja, Uskoković Dragan, "ZnO micro and nanocrystals with enhanced visible light absorption" Materials Science and Engineering: B (2012):1038-1045,
https://doi.org/10.1016/j.mseb.2012.05.013 .
22
21
20

Kreiranje morfologije i veličine čestica ZnO prahova

Marković, Smilja; Stanković, Ana; Veselinović, Ljiljana M.; Stojanović, Zoran S.; Uskoković, Dragan

(Beograd : Savez inženjera i tehničara Srbije, 2012)

TY  - JOUR
AU  - Marković, Smilja
AU  - Stanković, Ana
AU  - Veselinović, Ljiljana M.
AU  - Stojanović, Zoran S.
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/479
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/743
UR  - http://www.itn.sanu.ac.rs/opus4/files/743/Markovic_Tehnika.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7449
AB  - U ovom tekstu objašnjeni su postupci sinteze prahova ZnO i mogućnosti da se tim sintezama morfologija i srednja veličina čestica kreiraju od mikrometarskih štapića do nanometarskih sfernih čestica. Primenjene su dve metode sinteze, niskotemperatursko hidrotermalno (HT) procesiranje i ultrazvučno (UZ) procesiranje. Morfologija i srednja veličina čestica su kreirane podešavanjem molskog odnosa [Zn2+]/[OH-] polaznog (prekurskorskog) rastvora. Aglomeracija čestica je sprečena upotrebom polivinil pirolidona (PVP). Sintetisani prahovi su karakterisani metodom rendgenske difrakcije na prahu (XRD), skanirajuće elektronske mikroskopije (FESEM) i UV-Vis difuzione refleksione spektroskopije (UV-Vis DRS). Na osnovu skanirajućih elektronskih mikrografija predložen je mehanizam rasta čestica ZnO u zavisnosti od molskog odnosa [Zn2+]/[OH-] polaznog rastvora. Takođe, ispitan je i uticaj veličine i morfologije čestica na optičke karakteristike prahova ZnO; uočeno je da veličina i morfologija čestica utiču kako na apsorpciju vidljive svetlosti (%) tako i na pomeraj energetskog procepa (eV).
AB  - Different ZnO powders synthesis methods as well as possibilities to obtain particles with controlled morphology and average particle size from micro- to nano-level were discussed. Two synthesis methods were applied, low-temperature hydrothermal (HT) and ultrasound processing (UZ). Morphology and average particle size were tailored by adjusting of initial solution [Zn2+]/[OH-]molar ratio. Particles agglomeration is suppressed by polyvinylpyrrolidone (PVP). Synthesized powders were characterized by X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). Considering FESEM micrographs the ZnO particles growth mechanism depending on initial solution [Zn2+]/[OH-] molar ratio is proposed. Furthermore, influence of average particle size and morphology on ZnO optical properties is studied; it is observed that both average particle size and morphology affect visible light absorption (%) as well as shift of Ebg (eV).
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika - Novi materijali
T1  - Kreiranje morfologije i veličine čestica ZnO prahova
SP  - 685
EP  - 691
ER  - 
@article{
author = "Marković, Smilja and Stanković, Ana and Veselinović, Ljiljana M. and Stojanović, Zoran S. and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/479, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/743, http://www.itn.sanu.ac.rs/opus4/files/743/Markovic_Tehnika.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7449",
abstract = "U ovom tekstu objašnjeni su postupci sinteze prahova ZnO i mogućnosti da se tim sintezama morfologija i srednja veličina čestica kreiraju od mikrometarskih štapića do nanometarskih sfernih čestica. Primenjene su dve metode sinteze, niskotemperatursko hidrotermalno (HT) procesiranje i ultrazvučno (UZ) procesiranje. Morfologija i srednja veličina čestica su kreirane podešavanjem molskog odnosa [Zn2+]/[OH-] polaznog (prekurskorskog) rastvora. Aglomeracija čestica je sprečena upotrebom polivinil pirolidona (PVP). Sintetisani prahovi su karakterisani metodom rendgenske difrakcije na prahu (XRD), skanirajuće elektronske mikroskopije (FESEM) i UV-Vis difuzione refleksione spektroskopije (UV-Vis DRS). Na osnovu skanirajućih elektronskih mikrografija predložen je mehanizam rasta čestica ZnO u zavisnosti od molskog odnosa [Zn2+]/[OH-] polaznog rastvora. Takođe, ispitan je i uticaj veličine i morfologije čestica na optičke karakteristike prahova ZnO; uočeno je da veličina i morfologija čestica utiču kako na apsorpciju vidljive svetlosti (%) tako i na pomeraj energetskog procepa (eV)., Different ZnO powders synthesis methods as well as possibilities to obtain particles with controlled morphology and average particle size from micro- to nano-level were discussed. Two synthesis methods were applied, low-temperature hydrothermal (HT) and ultrasound processing (UZ). Morphology and average particle size were tailored by adjusting of initial solution [Zn2+]/[OH-]molar ratio. Particles agglomeration is suppressed by polyvinylpyrrolidone (PVP). Synthesized powders were characterized by X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). Considering FESEM micrographs the ZnO particles growth mechanism depending on initial solution [Zn2+]/[OH-] molar ratio is proposed. Furthermore, influence of average particle size and morphology on ZnO optical properties is studied; it is observed that both average particle size and morphology affect visible light absorption (%) as well as shift of Ebg (eV).",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika - Novi materijali",
title = "Kreiranje morfologije i veličine čestica ZnO prahova",
pages = "685-691"
}
Marković, S., Stanković, A., Veselinović, L. M., Stojanović, Z. S.,& Uskoković, D. (2012). Kreiranje morfologije i veličine čestica ZnO prahova.
Tehnika - Novi materijali
Beograd : Savez inženjera i tehničara Srbije., 685-691.
Marković S, Stanković A, Veselinović LM, Stojanović ZS, Uskoković D. Kreiranje morfologije i veličine čestica ZnO prahova. Tehnika - Novi materijali. 2012;:685-691
Marković Smilja, Stanković Ana, Veselinović Ljiljana M., Stojanović Zoran S., Uskoković Dragan, "Kreiranje morfologije i veličine čestica ZnO prahova" Tehnika - Novi materijali (2012):685-691

Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology

Marković, Smilja; Veselinović, Ljiljana M.; Lukić, Miodrag; Karanović, Ljiljana; Bračko, Ines; Ignjatović, Nenad L.; Uskoković, Dragan

(IOP Publishing, 2011)

TY  - JOUR
AU  - Marković, Smilja
AU  - Veselinović, Ljiljana M.
AU  - Lukić, Miodrag
AU  - Karanović, Ljiljana
AU  - Bračko, Ines
AU  - Ignjatović, Nenad L.
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/731
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1004
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7522
AB  - Phase composition, crystal structure and morphology of biological hydroxyapatite (BHAp) extracted from human mandible bone, and carbonated hydroxyapatite (CHAp), synthesized by the chemical precipitation method, were studied by x-ray powder diffraction (XRD), Fourier transform infrared (FTIR) and Raman (R) spectroscopy techniques, combined with transmission electron microscopy (TEM). Structural and microstructural parameters were determined through Rietveld refinement of recorded XRD data, performed using the FullProf computing program, and TEM. Microstructural analysis shows anisotropic extension along the [0 0 l] crystallographic direction (i.e. elongated crystallites shape) of both investigated samples. The average crystallite sizes of 10 and 8 nm were estimated for BHAp and CHAp, respectively. The FTIR and R spectroscopy studies show that carbonate ions substitute both phosphate and hydroxyl ions in the crystal structure of BHAp as well as in CHAp, indicating that both of them are mixed AB-type of CHAp. The thermal behaviour and carbonate content were analysed using thermogravimetric and differential thermal analysis. The carbonate content of about 1 wt.% and phase transition, at near 790 °C, from HAp to β-tricalcium phosphate were determined in both samples. The quality of synthesized CHAp powder, particularly, the particle size distribution and uniformity of morphology, was analysed by a particle size analyser based on laser diffraction and field emission scanning electron microscopy, respectively. These data were used to discuss similarity between natural and synthetic CHAp. Good correlation between the unit cell parameters, average crystallite size, morphology, carbonate content and crystallographic positions of carbonate ions in natural and synthetic HAp samples was found.
PB  - IOP Publishing
T2  - Biomedical Materials
T1  - Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology
EP  - Art. No. 045005
DO  - 10.1088/1748-6041/6/4/045005
ER  - 
@article{
author = "Marković, Smilja and Veselinović, Ljiljana M. and Lukić, Miodrag and Karanović, Ljiljana and Bračko, Ines and Ignjatović, Nenad L. and Uskoković, Dragan",
year = "2011",
url = "http://dais.sanu.ac.rs/123456789/731, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1004, http://vinar.vin.bg.ac.rs/handle/123456789/7522",
abstract = "Phase composition, crystal structure and morphology of biological hydroxyapatite (BHAp) extracted from human mandible bone, and carbonated hydroxyapatite (CHAp), synthesized by the chemical precipitation method, were studied by x-ray powder diffraction (XRD), Fourier transform infrared (FTIR) and Raman (R) spectroscopy techniques, combined with transmission electron microscopy (TEM). Structural and microstructural parameters were determined through Rietveld refinement of recorded XRD data, performed using the FullProf computing program, and TEM. Microstructural analysis shows anisotropic extension along the [0 0 l] crystallographic direction (i.e. elongated crystallites shape) of both investigated samples. The average crystallite sizes of 10 and 8 nm were estimated for BHAp and CHAp, respectively. The FTIR and R spectroscopy studies show that carbonate ions substitute both phosphate and hydroxyl ions in the crystal structure of BHAp as well as in CHAp, indicating that both of them are mixed AB-type of CHAp. The thermal behaviour and carbonate content were analysed using thermogravimetric and differential thermal analysis. The carbonate content of about 1 wt.% and phase transition, at near 790 °C, from HAp to β-tricalcium phosphate were determined in both samples. The quality of synthesized CHAp powder, particularly, the particle size distribution and uniformity of morphology, was analysed by a particle size analyser based on laser diffraction and field emission scanning electron microscopy, respectively. These data were used to discuss similarity between natural and synthetic CHAp. Good correlation between the unit cell parameters, average crystallite size, morphology, carbonate content and crystallographic positions of carbonate ions in natural and synthetic HAp samples was found.",
publisher = "IOP Publishing",
journal = "Biomedical Materials",
title = "Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology",
pages = "Art. No. 045005",
doi = "10.1088/1748-6041/6/4/045005"
}
Marković, S., Veselinović, L. M., Lukić, M., Karanović, L., Bračko, I., Ignjatović, N. L.,& Uskoković, D. (2011). Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology.
Biomedical Materials
IOP Publishing..
https://doi.org/10.1088/1748-6041/6/4/045005
Marković S, Veselinović LM, Lukić M, Karanović L, Bračko I, Ignjatović NL, Uskoković D. Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology. Biomedical Materials. 2011;:null-Art. No. 045005
Marković Smilja, Veselinović Ljiljana M., Lukić Miodrag, Karanović Ljiljana, Bračko Ines, Ignjatović Nenad L., Uskoković Dragan, "Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology" Biomedical Materials (2011),
https://doi.org/10.1088/1748-6041/6/4/045005 .
61
57
61

Hydrothermal Synthesis of Zirconium-Substituted Hydroxyapatite

Stojanović, Zoran S.; Lukić, Miodrag; Veselinović, Ljiljana M.; Marković, Smilja; Uskoković, Dragan

(2011)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Lukić, Miodrag
AU  - Veselinović, Ljiljana M.
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/160
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/397
UR  - http://www.itn.sanu.ac.rs/opus4/files/397/StojanovicYUCOMAT2011.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7355
AB  - Poster presented at the 13th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2011, Herceg Novi, Crna Gora, 5–9. septembar 2011.
T1  - Hydrothermal Synthesis of Zirconium-Substituted Hydroxyapatite
ER  - 
@conference{
author = "Stojanović, Zoran S. and Lukić, Miodrag and Veselinović, Ljiljana M. and Marković, Smilja and Uskoković, Dragan",
year = "2011",
url = "http://dais.sanu.ac.rs/123456789/160, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/397, http://www.itn.sanu.ac.rs/opus4/files/397/StojanovicYUCOMAT2011.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7355",
abstract = "Poster presented at the 13th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2011, Herceg Novi, Crna Gora, 5–9. septembar 2011.",
title = "Hydrothermal Synthesis of Zirconium-Substituted Hydroxyapatite"
}
Stojanović, Z. S., Lukić, M., Veselinović, L. M., Marković, S.,& Uskoković, D. (2011). Hydrothermal Synthesis of Zirconium-Substituted Hydroxyapatite.
.
Stojanović ZS, Lukić M, Veselinović LM, Marković S, Uskoković D. Hydrothermal Synthesis of Zirconium-Substituted Hydroxyapatite. 2011;
Stojanović Zoran S., Lukić Miodrag, Veselinović Ljiljana M., Marković Smilja, Uskoković Dragan, "Hydrothermal Synthesis of Zirconium-Substituted Hydroxyapatite" (2011)

Hydrothermal synthesis of zirconium substituted hydroxyapatite

Stojanović, Zoran S.; Lukić, Miodrag; Veselinović, Ljiljana M.; Marković, Smilja; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2011)

TY  - CONF
AU  - Stojanović, Zoran S.
AU  - Lukić, Miodrag
AU  - Veselinović, Ljiljana M.
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/959
UR  - http://dais.sanu.ac.rs/123456789/687
UR  - http://www.itn.sanu.ac.rs/opus4/files/959/Stojanovic_YUCOMAT2011.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7510
AB  - Aim of work is to investigate an efficiency of hydrothermal treatment on formation of zirconium substituted hydroxyapatite Ca5-xZrx(PO4)3OH. A set of trial was conducted to optimize process and find substitution limit. Molar ratio of Zr/(Ca+Zr) in precursor suspension was varied from 0 to 0.2 with step of 0.05. Powders were analyzed by means of techniques such as XRD, Fourier transform IR spectroscopy, ICP, laser - diffraction granulometry and SEM.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
T1  - Hydrothermal synthesis of zirconium substituted hydroxyapatite
SP  - 74
EP  - 74
ER  - 
@conference{
author = "Stojanović, Zoran S. and Lukić, Miodrag and Veselinović, Ljiljana M. and Marković, Smilja and Uskoković, Dragan",
year = "2011",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/959, http://dais.sanu.ac.rs/123456789/687, http://www.itn.sanu.ac.rs/opus4/files/959/Stojanovic_YUCOMAT2011.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7510",
abstract = "Aim of work is to investigate an efficiency of hydrothermal treatment on formation of zirconium substituted hydroxyapatite Ca5-xZrx(PO4)3OH. A set of trial was conducted to optimize process and find substitution limit. Molar ratio of Zr/(Ca+Zr) in precursor suspension was varied from 0 to 0.2 with step of 0.05. Powders were analyzed by means of techniques such as XRD, Fourier transform IR spectroscopy, ICP, laser - diffraction granulometry and SEM.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts",
title = "Hydrothermal synthesis of zirconium substituted hydroxyapatite",
pages = "74-74"
}
Stojanović, Z. S., Lukić, M., Veselinović, L. M., Marković, S.,& Uskoković, D. (2011). Hydrothermal synthesis of zirconium substituted hydroxyapatite.
The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 74-74.
Stojanović ZS, Lukić M, Veselinović LM, Marković S, Uskoković D. Hydrothermal synthesis of zirconium substituted hydroxyapatite. The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts. 2011;:74-74
Stojanović Zoran S., Lukić Miodrag, Veselinović Ljiljana M., Marković Smilja, Uskoković Dragan, "Hydrothermal synthesis of zirconium substituted hydroxyapatite" The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts (2011):74-74

Rietveld refinement of barium titanate stannate crystal structure

Veselinović, Ljiljana M.; Mitrić, Miodrag; Vukomanović, Marija; Marković, Smilja; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2011)

TY  - CONF
AU  - Veselinović, Ljiljana M.
AU  - Mitrić, Miodrag
AU  - Vukomanović, Marija
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/960
UR  - http://dais.sanu.ac.rs/123456789/688
UR  - http://www.itn.sanu.ac.rs/opus4/files/960/Veselinovic_YUCOMAT2011.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7511
AB  - The barium titanates have wide application in electronic industry as a dielectric and ferroelectric materials.The BaTiO3 doped with Sn is important for practical application in ceramic capacitors as well as in functionally graded materials. It is known that BaTiO3 materials have the typical perovsikite crystal structural. Their ideal crystal structure is a centrosimetric cubic structure with space group. However, the changes in temperature, pressure, and composition lead to phase transitions and crystal structure transformations. Pm 3m in this study using by Rietveld refinement, we resolved crystal structure of barium titanate stannate (BTS) BaTi1−xSnxO3 (x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20) solid solutions. The powders were prepared by simple solid state reaction at 1420 oC, in air for 2 hours. The structural investigations of the BTS samples were done at room temperature using an X-ray diffraction, Raman spectroscopy and TEM micrograph. The Rietveld refinement of the X-ray diffraction data was used to analyze the structural changes depending on amount of the Sn4+ ions in the BTS. Obtained data show that increasing of Sn amount in the structure provokes the transformation of crystal structure from tetragonal to cubic one. We suppose that the absence of orthorhombic and rhombohedral phases is probably a consequence of phase (0.025≤x<0.20) stabilization caused by method of sample preparation (high temperature solid state reaction).
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
T1  - Rietveld refinement of barium titanate stannate crystal structure
SP  - 136
EP  - 136
ER  - 
@conference{
author = "Veselinović, Ljiljana M. and Mitrić, Miodrag and Vukomanović, Marija and Marković, Smilja and Uskoković, Dragan",
year = "2011",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/960, http://dais.sanu.ac.rs/123456789/688, http://www.itn.sanu.ac.rs/opus4/files/960/Veselinovic_YUCOMAT2011.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7511",
abstract = "The barium titanates have wide application in electronic industry as a dielectric and ferroelectric materials.The BaTiO3 doped with Sn is important for practical application in ceramic capacitors as well as in functionally graded materials. It is known that BaTiO3 materials have the typical perovsikite crystal structural. Their ideal crystal structure is a centrosimetric cubic structure with space group. However, the changes in temperature, pressure, and composition lead to phase transitions and crystal structure transformations. Pm 3m in this study using by Rietveld refinement, we resolved crystal structure of barium titanate stannate (BTS) BaTi1−xSnxO3 (x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20) solid solutions. The powders were prepared by simple solid state reaction at 1420 oC, in air for 2 hours. The structural investigations of the BTS samples were done at room temperature using an X-ray diffraction, Raman spectroscopy and TEM micrograph. The Rietveld refinement of the X-ray diffraction data was used to analyze the structural changes depending on amount of the Sn4+ ions in the BTS. Obtained data show that increasing of Sn amount in the structure provokes the transformation of crystal structure from tetragonal to cubic one. We suppose that the absence of orthorhombic and rhombohedral phases is probably a consequence of phase (0.025≤x<0.20) stabilization caused by method of sample preparation (high temperature solid state reaction).",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts",
title = "Rietveld refinement of barium titanate stannate crystal structure",
pages = "136-136"
}
Veselinović, L. M., Mitrić, M., Vukomanović, M., Marković, S.,& Uskoković, D. (2011). Rietveld refinement of barium titanate stannate crystal structure.
The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 136-136.
Veselinović LM, Mitrić M, Vukomanović M, Marković S, Uskoković D. Rietveld refinement of barium titanate stannate crystal structure. The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts. 2011;:136-136
Veselinović Ljiljana M., Mitrić Miodrag, Vukomanović Marija, Marković Smilja, Uskoković Dragan, "Rietveld refinement of barium titanate stannate crystal structure" The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts (2011):136-136

Rietveld refinement of barium titanate stannate crystal structure

Veselinović, Ljiljana M.; Mitrić, Miodrag; Vukomanović, Marija; Marković, Smilja; Uskoković, Dragan

(2011)

TY  - CONF
AU  - Veselinović, Ljiljana M.
AU  - Mitrić, Miodrag
AU  - Vukomanović, Marija
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/161
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/398
UR  - http://www.itn.sanu.ac.rs/opus4/files/398/Veselinovic_YUCOMAT2011.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7356
AB  - Poster presented at the 13th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2011, Herceg Novi, Crna Gora, 5–9. septembar 2011.
T1  - Rietveld refinement of barium titanate stannate crystal structure
ER  - 
@conference{
author = "Veselinović, Ljiljana M. and Mitrić, Miodrag and Vukomanović, Marija and Marković, Smilja and Uskoković, Dragan",
year = "2011",
url = "http://dais.sanu.ac.rs/123456789/161, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/398, http://www.itn.sanu.ac.rs/opus4/files/398/Veselinovic_YUCOMAT2011.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7356",
abstract = "Poster presented at the 13th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2011, Herceg Novi, Crna Gora, 5–9. septembar 2011.",
title = "Rietveld refinement of barium titanate stannate crystal structure"
}
Veselinović, L. M., Mitrić, M., Vukomanović, M., Marković, S.,& Uskoković, D. (2011). Rietveld refinement of barium titanate stannate crystal structure.
.
Veselinović LM, Mitrić M, Vukomanović M, Marković S, Uskoković D. Rietveld refinement of barium titanate stannate crystal structure. 2011;
Veselinović Ljiljana M., Mitrić Miodrag, Vukomanović Marija, Marković Smilja, Uskoković Dragan, "Rietveld refinement of barium titanate stannate crystal structure" (2011)

Influence of size scale and morphology on antibacterial properties of ZnO nanoparticles

Stanković, Ana; Stojanović, Zoran S.; Veselinović, Ljiljana M.; Dimitrijević, Suzana I.; Škapin, Srečo Davor; Uskoković, Dragan

(2010)

TY  - CONF
AU  - Stanković, Ana
AU  - Stojanović, Zoran S.
AU  - Veselinović, Ljiljana M.
AU  - Dimitrijević, Suzana I.
AU  - Škapin, Srečo Davor
AU  - Uskoković, Dragan
PY  - 2010
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/446
UR  - http://dais.sanu.ac.rs/123456789/187
UR  - http://www.itn.sanu.ac.rs/opus4/files/446/Ana%20Stankovic%20YUCOMAT%202010.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7363
AB  - Poster presented at the 12th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2010, Herceg Novi, Montenegro, September 6–10, 2010
T1  - Influence of size scale and morphology on antibacterial properties of ZnO nanoparticles
ER  - 
@conference{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Dimitrijević, Suzana I. and Škapin, Srečo Davor and Uskoković, Dragan",
year = "2010",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/446, http://dais.sanu.ac.rs/123456789/187, http://www.itn.sanu.ac.rs/opus4/files/446/Ana%20Stankovic%20YUCOMAT%202010.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7363",
abstract = "Poster presented at the 12th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2010, Herceg Novi, Montenegro, September 6–10, 2010",
title = "Influence of size scale and morphology on antibacterial properties of ZnO nanoparticles"
}
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Dimitrijević, S. I., Škapin, S. D.,& Uskoković, D. (2010). Influence of size scale and morphology on antibacterial properties of ZnO nanoparticles.
.
Stanković A, Stojanović ZS, Veselinović LM, Dimitrijević SI, Škapin SD, Uskoković D. Influence of size scale and morphology on antibacterial properties of ZnO nanoparticles. 2010;
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana M., Dimitrijević Suzana I., Škapin Srečo Davor, Uskoković Dragan, "Influence of size scale and morphology on antibacterial properties of ZnO nanoparticles" (2010)