TY  - JOUR
AU  - Mirković, Miljana M.
AU  - Došen, Anja M.
AU  - Erić, Suzana
AU  - Vulić, Predrag
AU  - Matović, Branko
AU  - Rosić, Aleksandra
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8663
AB  - In this paper we present the phase and morphological characteristics of urinary stones from Serbian patients. The study included for the first time the determination of the phase composition and a statistical analysis of the presence of different types of urinary stones in both men and women in Serbia. The main goal of study was representation of collected data for the first time. For past three years, more than 600 samples were collected from Serbian patients. The phase composition of all samples of urinary stones was investigated using XRD analysis. Morphology and chemical composition of phases in some characteristic samples was determinate by the SEM-EDS analysis. Results indicate that there are several different types of urinary stones that vary in mineral composition, chemistry and morphology. It was found that 312 (52%) of the 600 stones were composed of calcium oxalate minerals (CaOx): 17.3% of which were pure calcium oxalate monohydrate COM, 4% were pure calcium oxalate dihydrate COD; 200 (33.3%) were a mixture of CaOx and Hydroxyapatite HA, 19 (3.1%) were uric acid (uricite) UA and uric acid dihydrate UAD, 17 (2.8%) were a combination of UA and CaOx minerals, 41 (6.8%) were combination of CaP minerals and CaOx, 11 (1.9%) were cystine (Cy) stones. The obtained data shows the diversity of types of urinary stones. Morphological, chemical and XRPD analysis give us statistical data which shows that the most common urinary stones from Serbian patients are from CaOx group and in most of cases are associated with CaP. © 2019 Elsevier B.V.
T2  - Microchemical Journal
T1  - Phase and microstructural study of urinary stones
VL  - 152
SP  - 104429
DO  - 10.1016/j.microc.2019.104429
ER  - 

@article{
author = "Mirković, Miljana M. and Došen, Anja M. and Erić, Suzana and Vulić, Predrag and Matović, Branko and Rosić, Aleksandra",
year = "2020",
abstract = "In this paper we present the phase and morphological characteristics of urinary stones from Serbian patients. The study included for the first time the determination of the phase composition and a statistical analysis of the presence of different types of urinary stones in both men and women in Serbia. The main goal of study was representation of collected data for the first time. For past three years, more than 600 samples were collected from Serbian patients. The phase composition of all samples of urinary stones was investigated using XRD analysis. Morphology and chemical composition of phases in some characteristic samples was determinate by the SEM-EDS analysis. Results indicate that there are several different types of urinary stones that vary in mineral composition, chemistry and morphology. It was found that 312 (52%) of the 600 stones were composed of calcium oxalate minerals (CaOx): 17.3% of which were pure calcium oxalate monohydrate COM, 4% were pure calcium oxalate dihydrate COD; 200 (33.3%) were a mixture of CaOx and Hydroxyapatite HA, 19 (3.1%) were uric acid (uricite) UA and uric acid dihydrate UAD, 17 (2.8%) were a combination of UA and CaOx minerals, 41 (6.8%) were combination of CaP minerals and CaOx, 11 (1.9%) were cystine (Cy) stones. The obtained data shows the diversity of types of urinary stones. Morphological, chemical and XRPD analysis give us statistical data which shows that the most common urinary stones from Serbian patients are from CaOx group and in most of cases are associated with CaP. © 2019 Elsevier B.V.",
journal = "Microchemical Journal",
title = "Phase and microstructural study of urinary stones",
volume = "152",
pages = "104429",
doi = "10.1016/j.microc.2019.104429"
}

Mirković, M. M., Došen, A. M., Erić, S., Vulić, P., Matović, B.,& Rosić, A.. (2020). Phase and microstructural study of urinary stones. in Microchemical Journal, 152, 104429.
https://doi.org/10.1016/j.microc.2019.104429

Mirković MM, Došen AM, Erić S, Vulić P, Matović B, Rosić A. Phase and microstructural study of urinary stones. in Microchemical Journal. 2020;152:104429.
doi:10.1016/j.microc.2019.104429 .

Mirković, Miljana M., Došen, Anja M., Erić, Suzana, Vulić, Predrag, Matović, Branko, Rosić, Aleksandra, "Phase and microstructural study of urinary stones" in Microchemical Journal, 152 (2020):104429,
https://doi.org/10.1016/j.microc.2019.104429 . .

TY  - JOUR
AU  - Lakić, Mladen
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Vulić, Predrag
AU  - Perić, Marko R.
AU  - Iskrenović, Predrag
AU  - Krstić, Ivan
AU  - Kuraica, Milorad M.
AU  - Nikolić, Aleksandar S.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0925346719301995
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8114
AB  - Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019
T2  - Optical Materials
T1  - Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite
VL  - 91
SP  - 279
EP  - 285
DO  - 10.1016/j.optmat.2019.03.031
ER  - 

@article{
author = "Lakić, Mladen and Anđelković, Ljubica and Šuljagić, Marija and Vulić, Predrag and Perić, Marko R. and Iskrenović, Predrag and Krstić, Ivan and Kuraica, Milorad M. and Nikolić, Aleksandar S.",
year = "2019",
abstract = "Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019",
journal = "Optical Materials",
title = "Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite",
volume = "91",
pages = "279-285",
doi = "10.1016/j.optmat.2019.03.031"
}

Lakić, M., Anđelković, L., Šuljagić, M., Vulić, P., Perić, M. R., Iskrenović, P., Krstić, I., Kuraica, M. M.,& Nikolić, A. S.. (2019). Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite. in Optical Materials, 91, 279-285.
https://doi.org/10.1016/j.optmat.2019.03.031

Lakić M, Anđelković L, Šuljagić M, Vulić P, Perić MR, Iskrenović P, Krstić I, Kuraica MM, Nikolić AS. Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite. in Optical Materials. 2019;91:279-285.
doi:10.1016/j.optmat.2019.03.031 .

Lakić, Mladen, Anđelković, Ljubica, Šuljagić, Marija, Vulić, Predrag, Perić, Marko R., Iskrenović, Predrag, Krstić, Ivan, Kuraica, Milorad M., Nikolić, Aleksandar S., "Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite" in Optical Materials, 91 (2019):279-285,
https://doi.org/10.1016/j.optmat.2019.03.031 . .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Vulić, Predrag
AU  - Radovanović, Željko
AU  - Balanč, Bojana
AU  - Simović, Bojana
AU  - Zeković, Ivana Lj.
AU  - Dramićanin, Miroslav
AU  - Rogan, Jelena R.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8737
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4
SP  - 171
EP  - 173
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8737
ER  - 

@conference{
author = "Radovanović, Lidija and Vulić, Predrag and Radovanović, Željko and Balanč, Bojana and Simović, Bojana and Zeković, Ivana Lj. and Dramićanin, Miroslav and Rogan, Jelena R.",
year = "2018",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4",
pages = "171-173",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8737"
}

Radovanović, L., Vulić, P., Radovanović, Ž., Balanč, B., Simović, B., Zeković, I. Lj., Dramićanin, M.,& Rogan, J. R.. (2018). Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 171-173.
https://hdl.handle.net/21.15107/rcub_vinar_8737

Radovanović L, Vulić P, Radovanović Ž, Balanč B, Simović B, Zeković IL, Dramićanin M, Rogan JR. Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:171-173.
https://hdl.handle.net/21.15107/rcub_vinar_8737 .

Radovanović, Lidija, Vulić, Predrag, Radovanović, Željko, Balanč, Bojana, Simović, Bojana, Zeković, Ivana Lj., Dramićanin, Miroslav, Rogan, Jelena R., "Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):171-173,
https://hdl.handle.net/21.15107/rcub_vinar_8737 .

TY  - JOUR
AU  - Đorđević, Vesna R.
AU  - Brik, Mikhail G.
AU  - Srivastava, Alok M.
AU  - Medić, Mina M.
AU  - Vulić, Predrag J.
AU  - Glais, Estelle
AU  - Viana, Bruno
AU  - Dramićanin, Miroslav
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7197
AB  - Herein, the synthesis, structural and crystal field analysis and optical spectroscopy of Mn4+ doped metal titanates ATiO(3) (A = Ca, Mg) are presented. Materials of desired phase were prepared by molten salt assisted sol-gel method in the powder form. Crystallographic data of samples were obtained by refinement of X-ray diffraction measurements. From experimental excitation and emission spectra and structural data, crystal field parameters and energy levels of Mn4+ in CaTiO3 and MgTiO3 were calculated by the exchange charge model of crystal-field theory. It is found that crystalline field strength is lower (Dq = 1831 cm(-1)) in the rhombohedral Ilmenite MgTiO3 structure due to the relatively longer average Mn4+-O2- bond distance (2.059 angstrom), and higher (Dq = 2017 cm(-1)) in orthorhombic CaTiO3 which possess shorter average Mn4+-O2- bond distance (1.956 angstrom). Spectral positions of the Mn(4+2)Eg - GT (4)A(2g) transition maxima is 709 nm in MgTiO3 and 717 nm in CaTiO3 respectively in good agreement with calculated values. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations
VL  - 74
SP  - 46
EP  - 51
DO  - 10.1016/j.optmat.2017.03.021
ER  - 

@article{
author = "Đorđević, Vesna R. and Brik, Mikhail G. and Srivastava, Alok M. and Medić, Mina M. and Vulić, Predrag J. and Glais, Estelle and Viana, Bruno and Dramićanin, Miroslav",
year = "2017",
abstract = "Herein, the synthesis, structural and crystal field analysis and optical spectroscopy of Mn4+ doped metal titanates ATiO(3) (A = Ca, Mg) are presented. Materials of desired phase were prepared by molten salt assisted sol-gel method in the powder form. Crystallographic data of samples were obtained by refinement of X-ray diffraction measurements. From experimental excitation and emission spectra and structural data, crystal field parameters and energy levels of Mn4+ in CaTiO3 and MgTiO3 were calculated by the exchange charge model of crystal-field theory. It is found that crystalline field strength is lower (Dq = 1831 cm(-1)) in the rhombohedral Ilmenite MgTiO3 structure due to the relatively longer average Mn4+-O2- bond distance (2.059 angstrom), and higher (Dq = 2017 cm(-1)) in orthorhombic CaTiO3 which possess shorter average Mn4+-O2- bond distance (1.956 angstrom). Spectral positions of the Mn(4+2)Eg - GT (4)A(2g) transition maxima is 709 nm in MgTiO3 and 717 nm in CaTiO3 respectively in good agreement with calculated values. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations",
volume = "74",
pages = "46-51",
doi = "10.1016/j.optmat.2017.03.021"
}

Đorđević, V. R., Brik, M. G., Srivastava, A. M., Medić, M. M., Vulić, P. J., Glais, E., Viana, B.,& Dramićanin, M.. (2017). Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations. in Optical Materials, 74, 46-51.
https://doi.org/10.1016/j.optmat.2017.03.021

Đorđević VR, Brik MG, Srivastava AM, Medić MM, Vulić PJ, Glais E, Viana B, Dramićanin M. Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations. in Optical Materials. 2017;74:46-51.
doi:10.1016/j.optmat.2017.03.021 .

Đorđević, Vesna R., Brik, Mikhail G., Srivastava, Alok M., Medić, Mina M., Vulić, Predrag J., Glais, Estelle, Viana, Bruno, Dramićanin, Miroslav, "Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations" in Optical Materials, 74 (2017):46-51,
https://doi.org/10.1016/j.optmat.2017.03.021 . .

TY  - JOUR
AU  - Kremenović, Aleksandar S.
AU  - Antić, Bratislav
AU  - Vulić, Predrag J.
AU  - Blanuša, Jovan
AU  - Tomić, Aleksandra
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1469
AB  - Magnetic structure of ZnFe2O4 normal spinel is re- examined. Antiferromagnetic structure non-collinear model is established within C(a)2 space group having four different crystallographic/magnetic sites for 32 Fe3+ spins within magnetic unit cell.
T2  - Journal of Magnetism and Magnetic Materials
T1  - ZnFe2O4 antiferromagnetic structure redetermination
VL  - 426
SP  - 264
EP  - 266
DO  - 10.1016/j.jmmm.2016.11.071
ER  - 

@article{
author = "Kremenović, Aleksandar S. and Antić, Bratislav and Vulić, Predrag J. and Blanuša, Jovan and Tomić, Aleksandra",
year = "2017",
abstract = "Magnetic structure of ZnFe2O4 normal spinel is re- examined. Antiferromagnetic structure non-collinear model is established within C(a)2 space group having four different crystallographic/magnetic sites for 32 Fe3+ spins within magnetic unit cell.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "ZnFe2O4 antiferromagnetic structure redetermination",
volume = "426",
pages = "264-266",
doi = "10.1016/j.jmmm.2016.11.071"
}

Kremenović, A. S., Antić, B., Vulić, P. J., Blanuša, J.,& Tomić, A.. (2017). ZnFe2O4 antiferromagnetic structure redetermination. in Journal of Magnetism and Magnetic Materials, 426, 264-266.
https://doi.org/10.1016/j.jmmm.2016.11.071

Kremenović AS, Antić B, Vulić PJ, Blanuša J, Tomić A. ZnFe2O4 antiferromagnetic structure redetermination. in Journal of Magnetism and Magnetic Materials. 2017;426:264-266.
doi:10.1016/j.jmmm.2016.11.071 .

Kremenović, Aleksandar S., Antić, Bratislav, Vulić, Predrag J., Blanuša, Jovan, Tomić, Aleksandra, "ZnFe2O4 antiferromagnetic structure redetermination" in Journal of Magnetism and Magnetic Materials, 426 (2017):264-266,
https://doi.org/10.1016/j.jmmm.2016.11.071 . .

TY  - CONF
AU  - Mirković, Miljana
AU  - Došen, Anja
AU  - Babić, Biljana
AU  - Čebela, Maria
AU  - Vulić, Predrag
AU  - Rosić, Aleksandra
AU  - Matović, Branko
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11542
AB  - Synthesis of monetite (CaHPO4) by means of mechanochemical treatment of brushite (CaHPO4∙2H2O) was studied. Start sample (Brushite) was obtained by precipitation method at room temperature. Particle size of brushite was reduced using vibromilling. The powders were analyzed by X-ray powder diffraction (XRPD). Microstructure and morphology was determined by means of scanning electron microscopy (SEM). Brunauer-Emmett-Teller (BET) method was used for examining specific surface area of obtained powders. It was found that five minutes of milling induces brushite-monetite phase transformation. This type of synthesis is cost-effective compared to the other used methods for synthesis of monetite.
PB  - Novi Sad : University of Novi Sad, Faculty of Technology
C3  - 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts
T1  - Synthesis of Monetite (CaHPO4) by mechanochemical treatment of Brushite (CaHPO4∙2H2O)
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11542
ER  - 

@conference{
author = "Mirković, Miljana and Došen, Anja and Babić, Biljana and Čebela, Maria and Vulić, Predrag and Rosić, Aleksandra and Matović, Branko",
year = "2015",
abstract = "Synthesis of monetite (CaHPO4) by means of mechanochemical treatment of brushite (CaHPO4∙2H2O) was studied. Start sample (Brushite) was obtained by precipitation method at room temperature. Particle size of brushite was reduced using vibromilling. The powders were analyzed by X-ray powder diffraction (XRPD). Microstructure and morphology was determined by means of scanning electron microscopy (SEM). Brunauer-Emmett-Teller (BET) method was used for examining specific surface area of obtained powders. It was found that five minutes of milling induces brushite-monetite phase transformation. This type of synthesis is cost-effective compared to the other used methods for synthesis of monetite.",
publisher = "Novi Sad : University of Novi Sad, Faculty of Technology",
journal = "11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts",
title = "Synthesis of Monetite (CaHPO4) by mechanochemical treatment of Brushite (CaHPO4∙2H2O)",
pages = "71",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11542"
}

Mirković, M., Došen, A., Babić, B., Čebela, M., Vulić, P., Rosić, A.,& Matović, B.. (2015). Synthesis of Monetite (CaHPO4) by mechanochemical treatment of Brushite (CaHPO4∙2H2O). in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts
Novi Sad : University of Novi Sad, Faculty of Technology., 71.
https://hdl.handle.net/21.15107/rcub_vinar_11542

Mirković M, Došen A, Babić B, Čebela M, Vulić P, Rosić A, Matović B. Synthesis of Monetite (CaHPO4) by mechanochemical treatment of Brushite (CaHPO4∙2H2O). in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts. 2015;:71.
https://hdl.handle.net/21.15107/rcub_vinar_11542 .

Mirković, Miljana, Došen, Anja, Babić, Biljana, Čebela, Maria, Vulić, Predrag, Rosić, Aleksandra, Matović, Branko, "Synthesis of Monetite (CaHPO4) by mechanochemical treatment of Brushite (CaHPO4∙2H2O)" in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts (2015):71,
https://hdl.handle.net/21.15107/rcub_vinar_11542 .

TY  - JOUR
AU  - Welsch, A-M.
AU  - Murawski, D.
AU  - Prekajski, Marija D.
AU  - Vulic, P.
AU  - Kremenović, Aleksandar S.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/501
AB  - With the increased interest in application of Li aluminosilicate materials as solid electrolytes, this study focuses on investigating the influence of structure on conductivity properties in single-crystal LiAlSi2O6 which is characterized by three crystal polymorphs where only structural arrangements differ while the amount of mobile carriers is identical. Two single-crystal polymorphic phases produced at ambient pressure are with tetragonal P4(1)2(1)2 symmetry and hexagonal P6(2)22 symmetry, also referred to as beta- and gamma-spodumene in the older literature. For this study, flux-grown hexagonal spodumene single-crystals were measured for conductivity parallel to the crystallographic c-axis and the results were compared with previously published results for tetragonal spodumene, both as single-crystal and polycrystalline aggregate, monoclinic spodumene (alpha-spodumene) and LiAlSi2O6 glass. The activation energy E (a) of 79.69 +/- A 0.38 kJ/mol for hexagonal phase is very similar to the other crystalline polymorphs with the same orientation. However, the sigma (DC) in hexagonal spodumene was determined to be higher than other crystalline phases and about 1.5 orders of magnitude lower than the conductivity in glass LiAlSi2O6 phase. Additionally, the densities of atomic packing were compared between phases, and the differences in the openness of the structures indicate that the more dominant effect on the Li mobility lies with the actual spatial arrangement of Li sites and the Si/Al sublattice.
T2  - Physics and Chemistry of Minerals
T1  - Ionic conductivity in single-crystal LiAlSi2O6: influence of structure on lithium mobility
VL  - 42
IS  - 5
SP  - 413
EP  - 420
DO  - 10.1007/s00269-015-0732-2
ER  - 

@article{
author = "Welsch, A-M. and Murawski, D. and Prekajski, Marija D. and Vulic, P. and Kremenović, Aleksandar S.",
year = "2015",
abstract = "With the increased interest in application of Li aluminosilicate materials as solid electrolytes, this study focuses on investigating the influence of structure on conductivity properties in single-crystal LiAlSi2O6 which is characterized by three crystal polymorphs where only structural arrangements differ while the amount of mobile carriers is identical. Two single-crystal polymorphic phases produced at ambient pressure are with tetragonal P4(1)2(1)2 symmetry and hexagonal P6(2)22 symmetry, also referred to as beta- and gamma-spodumene in the older literature. For this study, flux-grown hexagonal spodumene single-crystals were measured for conductivity parallel to the crystallographic c-axis and the results were compared with previously published results for tetragonal spodumene, both as single-crystal and polycrystalline aggregate, monoclinic spodumene (alpha-spodumene) and LiAlSi2O6 glass. The activation energy E (a) of 79.69 +/- A 0.38 kJ/mol for hexagonal phase is very similar to the other crystalline polymorphs with the same orientation. However, the sigma (DC) in hexagonal spodumene was determined to be higher than other crystalline phases and about 1.5 orders of magnitude lower than the conductivity in glass LiAlSi2O6 phase. Additionally, the densities of atomic packing were compared between phases, and the differences in the openness of the structures indicate that the more dominant effect on the Li mobility lies with the actual spatial arrangement of Li sites and the Si/Al sublattice.",
journal = "Physics and Chemistry of Minerals",
title = "Ionic conductivity in single-crystal LiAlSi2O6: influence of structure on lithium mobility",
volume = "42",
number = "5",
pages = "413-420",
doi = "10.1007/s00269-015-0732-2"
}

Welsch, A-M., Murawski, D., Prekajski, M. D., Vulic, P.,& Kremenović, A. S.. (2015). Ionic conductivity in single-crystal LiAlSi2O6: influence of structure on lithium mobility. in Physics and Chemistry of Minerals, 42(5), 413-420.
https://doi.org/10.1007/s00269-015-0732-2

Welsch A, Murawski D, Prekajski MD, Vulic P, Kremenović AS. Ionic conductivity in single-crystal LiAlSi2O6: influence of structure on lithium mobility. in Physics and Chemistry of Minerals. 2015;42(5):413-420.
doi:10.1007/s00269-015-0732-2 .

Welsch, A-M., Murawski, D., Prekajski, Marija D., Vulic, P., Kremenović, Aleksandar S., "Ionic conductivity in single-crystal LiAlSi2O6: influence of structure on lithium mobility" in Physics and Chemistry of Minerals, 42, no. 5 (2015):413-420,
https://doi.org/10.1007/s00269-015-0732-2 . .

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Perović, Ivana M.
AU  - Gavrilov, Nemanja M.
AU  - Pašti, Igor A.
AU  - Šaponjić, Aleksandra
AU  - Vulić, Predrag J.
AU  - Karić, Slavko D.
AU  - Babić, Biljana M.
AU  - Marčeta Kaninski, Milica
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6072
AB  - Fuel cell application of tungsten carbide is revisited starting with four different tungsten carbide precursors used for high temperature synthesis. It was shown that the final products greatly depend on the nature of the precursor. Using tungsten peroxide/2-propanol derived precursor almost pure WC was obtained which was subjected to further electrochemical investigation. It was shown that it is necessary to decorate WC with Pt nanoparticles in order to obtain satisfactory fuel cell performance, but catalytic activity of Pt/WC anode catalyst is not expected to overcome the activity of Pt/C. It is argued that new synthetic routes for the preparation of WC should be directed towards obtaining highly dispersed WC, that is, WC with high external surface area available for Pt deposition, rather than high specific surface area WC with large contribution of micropores having no importance when it comes to the use of WC as a catalyst support. The true benefit of the use of WC as catalyst support is found in increased CO tolerance/CO oxidation activity of WC-supported Pt catalysts. Qualitative mechanistic view on increased CO oxidation activity of Pt/WC is offered. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages
VL  - 39
IS  - 21
SP  - 11175
EP  - 11185
DO  - 10.1016/j.ijhydene.2014.05.078
ER  - 

@article{
author = "Nikolić, Vladimir M. and Perović, Ivana M. and Gavrilov, Nemanja M. and Pašti, Igor A. and Šaponjić, Aleksandra and Vulić, Predrag J. and Karić, Slavko D. and Babić, Biljana M. and Marčeta Kaninski, Milica",
year = "2014",
abstract = "Fuel cell application of tungsten carbide is revisited starting with four different tungsten carbide precursors used for high temperature synthesis. It was shown that the final products greatly depend on the nature of the precursor. Using tungsten peroxide/2-propanol derived precursor almost pure WC was obtained which was subjected to further electrochemical investigation. It was shown that it is necessary to decorate WC with Pt nanoparticles in order to obtain satisfactory fuel cell performance, but catalytic activity of Pt/WC anode catalyst is not expected to overcome the activity of Pt/C. It is argued that new synthetic routes for the preparation of WC should be directed towards obtaining highly dispersed WC, that is, WC with high external surface area available for Pt deposition, rather than high specific surface area WC with large contribution of micropores having no importance when it comes to the use of WC as a catalyst support. The true benefit of the use of WC as catalyst support is found in increased CO tolerance/CO oxidation activity of WC-supported Pt catalysts. Qualitative mechanistic view on increased CO oxidation activity of Pt/WC is offered. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages",
volume = "39",
number = "21",
pages = "11175-11185",
doi = "10.1016/j.ijhydene.2014.05.078"
}

Nikolić, V. M., Perović, I. M., Gavrilov, N. M., Pašti, I. A., Šaponjić, A., Vulić, P. J., Karić, S. D., Babić, B. M.,& Marčeta Kaninski, M.. (2014). On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages. in International Journal of Hydrogen Energy, 39(21), 11175-11185.
https://doi.org/10.1016/j.ijhydene.2014.05.078

Nikolić VM, Perović IM, Gavrilov NM, Pašti IA, Šaponjić A, Vulić PJ, Karić SD, Babić BM, Marčeta Kaninski M. On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages. in International Journal of Hydrogen Energy. 2014;39(21):11175-11185.
doi:10.1016/j.ijhydene.2014.05.078 .

Nikolić, Vladimir M., Perović, Ivana M., Gavrilov, Nemanja M., Pašti, Igor A., Šaponjić, Aleksandra, Vulić, Predrag J., Karić, Slavko D., Babić, Biljana M., Marčeta Kaninski, Milica, "On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages" in International Journal of Hydrogen Energy, 39, no. 21 (2014):11175-11185,
https://doi.org/10.1016/j.ijhydene.2014.05.078 . .

TY  - JOUR
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
AU  - Vulic, P.
AU  - Dramićanin, Miroslav
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5839
AB  - Sub-micronic, spherical Y2O3:Yb/Er particles comprising clustered nano-units (70 nm) were prepared via ultrasonic spray pyrolysis from pure nitrate precursor solutions with different Yb/Er dopant ratios. The particles were additionally thermally treated at 1100 degrees C for 12, 24 and 48 h. The structural and morphological characteristics of particles were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, field-emission scanning electron microscopy, energy dispersive X-ray analysis and specific surface area (BET) and were further correlated with their advanced optical properties. For the recorded up-conversion emissions, originating from the following Er3+ transitions: [H-2(9/2) - GT I-4(15/2)] in blue (407-420 nm); [H-2(11/2), S-4(3/2) - GT I-4(15/2)] green: 510-590 nm; and [F-4(9/2) - GT I-4(15/2)] in red (640-720 nm) spectral region, the corresponding lifetimes were acquired in the wide temperature range (10-300 K). The most intense green up-conversion emission with the long decay of 550 ms is recorded for Y1.97Yb0.02Er0.01O3 particles thermally treated at 1100 degrees C for 24 h. (c) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis
VL  - 40
IS  - 2
SP  - 3089
EP  - 3095
DO  - 10.1016/j.ceramint.2013.10.002
ER  - 

@article{
author = "Lojpur, Vesna and Mančić, Lidija and Vulic, P. and Dramićanin, Miroslav and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2014",
abstract = "Sub-micronic, spherical Y2O3:Yb/Er particles comprising clustered nano-units (70 nm) were prepared via ultrasonic spray pyrolysis from pure nitrate precursor solutions with different Yb/Er dopant ratios. The particles were additionally thermally treated at 1100 degrees C for 12, 24 and 48 h. The structural and morphological characteristics of particles were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, field-emission scanning electron microscopy, energy dispersive X-ray analysis and specific surface area (BET) and were further correlated with their advanced optical properties. For the recorded up-conversion emissions, originating from the following Er3+ transitions: [H-2(9/2) - GT I-4(15/2)] in blue (407-420 nm); [H-2(11/2), S-4(3/2) - GT I-4(15/2)] green: 510-590 nm; and [F-4(9/2) - GT I-4(15/2)] in red (640-720 nm) spectral region, the corresponding lifetimes were acquired in the wide temperature range (10-300 K). The most intense green up-conversion emission with the long decay of 550 ms is recorded for Y1.97Yb0.02Er0.01O3 particles thermally treated at 1100 degrees C for 24 h. (c) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis",
volume = "40",
number = "2",
pages = "3089-3095",
doi = "10.1016/j.ceramint.2013.10.002"
}

Lojpur, V., Mančić, L., Vulic, P., Dramićanin, M., Rabanal, M. E.,& Milošević, O.. (2014). Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis. in Ceramics International, 40(2), 3089-3095.
https://doi.org/10.1016/j.ceramint.2013.10.002

Lojpur V, Mančić L, Vulic P, Dramićanin M, Rabanal ME, Milošević O. Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis. in Ceramics International. 2014;40(2):3089-3095.
doi:10.1016/j.ceramint.2013.10.002 .

Lojpur, Vesna, Mančić, Lidija, Vulic, P., Dramićanin, Miroslav, Rabanal, Maria Eugenia, Milošević, Olivera, "Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis" in Ceramics International, 40, no. 2 (2014):3089-3095,
https://doi.org/10.1016/j.ceramint.2013.10.002 . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Perović, Marija M.
AU  - Kremenović, Aleksandar S.
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
AU  - Vulić, Predrag J.
AU  - Bessais, Lotfi
AU  - Božin, Emil S.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5305
AB  - The evolution of the magnetic state, crystal structure and microstructure parameters of nanocrystalline zinc-ferrite, tuned by thermal annealing of similar to 4 nm nanoparticles, was systematically studied by complementary characterization methods. Structural analysis of neutron and synchrotron x-ray radiation data revealed a mixed cation distribution in the nanoparticle samples, with the degree of inversion systematically decreasing from 0.25 in an as-prepared nanocrystalline sample to a non-inverted spinel structure with a normal cation distribution in the bulk counterpart. The results of DC magnetization and Mossbauer spectroscopy experiments indicated a superparamagnetic relaxation in similar to 4 nm nanoparticles, albeit with different freezing temperatures T-f of 27.5 K and 46 K, respectively. The quadrupole splitting parameter decreases with the annealing temperature due to cation redistribution between the tetrahedral and octahedral sites of the spinel structure and the associated defects. DC magnetization measurements indicated the existence of significant interparticle interactions among nanoparticles (superspins). Additional confirmation for the presence of interparticle interactions was found from the fit of the Tf(H) dependence to the AT line, from which a value of the anisotropy constant of K-eff = 5.6 x 10(5) erg cm(-3) was deduced. Further evidence for strong interparticle interactions was found from AC susceptibility measurements, where the frequency dependence of the freezing temperature T-f(f) was satisfactory described by both Vogel-Fulcher and dynamic scaling theory, both applicable for interacting systems. The parameters obtained from these fits suggest collective freezing of magnetic moments at T-f.
T2  - Journal of Physics: Condensed Matter
T1  - An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles
VL  - 25
IS  - 8
DO  - 10.1088/0953-8984/25/8/086001
ER  - 

@article{
author = "Antić, Bratislav and Perović, Marija M. and Kremenović, Aleksandar S. and Blanuša, Jovan and Spasojević, Vojislav and Vulić, Predrag J. and Bessais, Lotfi and Božin, Emil S.",
year = "2013",
abstract = "The evolution of the magnetic state, crystal structure and microstructure parameters of nanocrystalline zinc-ferrite, tuned by thermal annealing of similar to 4 nm nanoparticles, was systematically studied by complementary characterization methods. Structural analysis of neutron and synchrotron x-ray radiation data revealed a mixed cation distribution in the nanoparticle samples, with the degree of inversion systematically decreasing from 0.25 in an as-prepared nanocrystalline sample to a non-inverted spinel structure with a normal cation distribution in the bulk counterpart. The results of DC magnetization and Mossbauer spectroscopy experiments indicated a superparamagnetic relaxation in similar to 4 nm nanoparticles, albeit with different freezing temperatures T-f of 27.5 K and 46 K, respectively. The quadrupole splitting parameter decreases with the annealing temperature due to cation redistribution between the tetrahedral and octahedral sites of the spinel structure and the associated defects. DC magnetization measurements indicated the existence of significant interparticle interactions among nanoparticles (superspins). Additional confirmation for the presence of interparticle interactions was found from the fit of the Tf(H) dependence to the AT line, from which a value of the anisotropy constant of K-eff = 5.6 x 10(5) erg cm(-3) was deduced. Further evidence for strong interparticle interactions was found from AC susceptibility measurements, where the frequency dependence of the freezing temperature T-f(f) was satisfactory described by both Vogel-Fulcher and dynamic scaling theory, both applicable for interacting systems. The parameters obtained from these fits suggest collective freezing of magnetic moments at T-f.",
journal = "Journal of Physics: Condensed Matter",
title = "An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles",
volume = "25",
number = "8",
doi = "10.1088/0953-8984/25/8/086001"
}

Antić, B., Perović, M. M., Kremenović, A. S., Blanuša, J., Spasojević, V., Vulić, P. J., Bessais, L.,& Božin, E. S.. (2013). An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles. in Journal of Physics: Condensed Matter, 25(8).
https://doi.org/10.1088/0953-8984/25/8/086001

Antić B, Perović MM, Kremenović AS, Blanuša J, Spasojević V, Vulić PJ, Bessais L, Božin ES. An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles. in Journal of Physics: Condensed Matter. 2013;25(8).
doi:10.1088/0953-8984/25/8/086001 .

Antić, Bratislav, Perović, Marija M., Kremenović, Aleksandar S., Blanuša, Jovan, Spasojević, Vojislav, Vulić, Predrag J., Bessais, Lotfi, Božin, Emil S., "An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles" in Journal of Physics: Condensed Matter, 25, no. 8 (2013),
https://doi.org/10.1088/0953-8984/25/8/086001 . .

TY  - JOUR
AU  - Jović, Nataša G.
AU  - Vučinić-Vasić, Milica
AU  - Kremenović, Aleksandar S.
AU  - Antić, Bratislav
AU  - Jovalekić, Čedomir
AU  - Vulic, P.
AU  - Kahlenberg, V.
AU  - Kaindl, R.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3753
AB  - Nanocrystalline LiZn0.5Ti1.5O4 disordered spinel (S.G. Fd (3) over barm) was synthesized by high energy ball milling (HEBM). TEM analysis of the sample has shown that the particle size distribution is broad ranging from 10 to 60 nm. By X-ray line broadening analysis, the average apparent size of the crystallites is found to be 19(1) nm, while the average apparent strain is 26(4) x 10(-4). The cation distribution was found to be metastable, with Zn in octahedral 16d and Ti in tetrahedral 8a position, against their known site preference. After annealing the sample at 650 degrees C for 3 h and slow cooling down to room temperature, superstructure reflections (110), (210), (211) have been observed, indicating a cation ordering in the octahedral sublattice and a combined symmetry reduction (S.G. P4(3)32). The reverse symmetry change P4(3)32 - GT Fd (3) over barm caused by increasing the temperature was studied by in situ XRPD, DSC/DTA, Landaus theory of phase transitions and Raman spectroscopy. An analysis of the topology of the order parameter vector space indicates a biquadratic or linear-quadratic coupling between the order parameters Q(1) and Q(2). In LiZn0.5Ti1.5O4 dilatation expansion of crystal lattice as well as spontaneous strain values are rather small (order of 10(-4)), comparing to e.g. Li1.33xCo2-2xTi1+0.67xO4. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - HEBM synthesis of nanocrystalline LiZn0.5Ti1.5O4 spinel and thermally induced order-disorder phase transition(P4(3)32 - GT Fd(3)over-barm)
VL  - 116
IS  - 2-3
SP  - 542
EP  - 549
DO  - 10.1016/j.matchemphys.2009.04.033
ER  - 

@article{
author = "Jović, Nataša G. and Vučinić-Vasić, Milica and Kremenović, Aleksandar S. and Antić, Bratislav and Jovalekić, Čedomir and Vulic, P. and Kahlenberg, V. and Kaindl, R.",
year = "2009",
abstract = "Nanocrystalline LiZn0.5Ti1.5O4 disordered spinel (S.G. Fd (3) over barm) was synthesized by high energy ball milling (HEBM). TEM analysis of the sample has shown that the particle size distribution is broad ranging from 10 to 60 nm. By X-ray line broadening analysis, the average apparent size of the crystallites is found to be 19(1) nm, while the average apparent strain is 26(4) x 10(-4). The cation distribution was found to be metastable, with Zn in octahedral 16d and Ti in tetrahedral 8a position, against their known site preference. After annealing the sample at 650 degrees C for 3 h and slow cooling down to room temperature, superstructure reflections (110), (210), (211) have been observed, indicating a cation ordering in the octahedral sublattice and a combined symmetry reduction (S.G. P4(3)32). The reverse symmetry change P4(3)32 - GT Fd (3) over barm caused by increasing the temperature was studied by in situ XRPD, DSC/DTA, Landaus theory of phase transitions and Raman spectroscopy. An analysis of the topology of the order parameter vector space indicates a biquadratic or linear-quadratic coupling between the order parameters Q(1) and Q(2). In LiZn0.5Ti1.5O4 dilatation expansion of crystal lattice as well as spontaneous strain values are rather small (order of 10(-4)), comparing to e.g. Li1.33xCo2-2xTi1+0.67xO4. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "HEBM synthesis of nanocrystalline LiZn0.5Ti1.5O4 spinel and thermally induced order-disorder phase transition(P4(3)32 - GT Fd(3)over-barm)",
volume = "116",
number = "2-3",
pages = "542-549",
doi = "10.1016/j.matchemphys.2009.04.033"
}

Jović, N. G., Vučinić-Vasić, M., Kremenović, A. S., Antić, B., Jovalekić, Č., Vulic, P., Kahlenberg, V.,& Kaindl, R.. (2009). HEBM synthesis of nanocrystalline LiZn0.5Ti1.5O4 spinel and thermally induced order-disorder phase transition(P4(3)32 - GT Fd(3)over-barm). in Materials Chemistry and Physics, 116(2-3), 542-549.
https://doi.org/10.1016/j.matchemphys.2009.04.033

Jović NG, Vučinić-Vasić M, Kremenović AS, Antić B, Jovalekić Č, Vulic P, Kahlenberg V, Kaindl R. HEBM synthesis of nanocrystalline LiZn0.5Ti1.5O4 spinel and thermally induced order-disorder phase transition(P4(3)32 - GT Fd(3)over-barm). in Materials Chemistry and Physics. 2009;116(2-3):542-549.
doi:10.1016/j.matchemphys.2009.04.033 .

Jović, Nataša G., Vučinić-Vasić, Milica, Kremenović, Aleksandar S., Antić, Bratislav, Jovalekić, Čedomir, Vulic, P., Kahlenberg, V., Kaindl, R., "HEBM synthesis of nanocrystalline LiZn0.5Ti1.5O4 spinel and thermally induced order-disorder phase transition(P4(3)32 - GT Fd(3)over-barm)" in Materials Chemistry and Physics, 116, no. 2-3 (2009):542-549,
https://doi.org/10.1016/j.matchemphys.2009.04.033 . .

TY  - JOUR
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Vulic, P.
AU  - Matović, Branko
AU  - Devečerski, Aleksandar
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6751
AB  - The paper analyze the possibility of using LTA zeolite as a precursor for obtaining sillenite phase (Bi(12)MO(20), M=Si, Ti, Ge) by hydrothermal synthesis process. The synthesis procedure involves mixing of zeolite (Na-LTA) water solution with native bismuth in autoclave at 170 degrees C for 7 days. As-prepared sample contains sillenite Bi(12)SiO(20) and nepheline (Na(2)AlO(6)) phases. The structures of sillenite and nepheline phases were determined by XRPD methods, and their quantitative amounts were calculated by Rietveld method. These structures were refined with agreement factors: R(p)=7.21, R(wp)=9.25 and R(bragg)=6.14 for a cubic structure sillenite and R(bragg)=18.6 for nepheline phases. The weight fractions were 36.73% for sillenite and 63.72% for nepheline. The shape, morphology and chemical composition of investigated phase are done by means of scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS).
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Synthesis of sillenite-type compounds from zeolite precursors: XRPD and SEM/EDS analyses
VL  - 10
IS  - 4
SP  - 887
EP  - 890
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6751
ER  - 

@article{
author = "Radosavljević-Mihajlović, Ana S. and Vulic, P. and Matović, Branko and Devečerski, Aleksandar",
year = "2008",
abstract = "The paper analyze the possibility of using LTA zeolite as a precursor for obtaining sillenite phase (Bi(12)MO(20), M=Si, Ti, Ge) by hydrothermal synthesis process. The synthesis procedure involves mixing of zeolite (Na-LTA) water solution with native bismuth in autoclave at 170 degrees C for 7 days. As-prepared sample contains sillenite Bi(12)SiO(20) and nepheline (Na(2)AlO(6)) phases. The structures of sillenite and nepheline phases were determined by XRPD methods, and their quantitative amounts were calculated by Rietveld method. These structures were refined with agreement factors: R(p)=7.21, R(wp)=9.25 and R(bragg)=6.14 for a cubic structure sillenite and R(bragg)=18.6 for nepheline phases. The weight fractions were 36.73% for sillenite and 63.72% for nepheline. The shape, morphology and chemical composition of investigated phase are done by means of scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS).",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Synthesis of sillenite-type compounds from zeolite precursors: XRPD and SEM/EDS analyses",
volume = "10",
number = "4",
pages = "887-890",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6751"
}

Radosavljević-Mihajlović, A. S., Vulic, P., Matović, B.,& Devečerski, A.. (2008). Synthesis of sillenite-type compounds from zeolite precursors: XRPD and SEM/EDS analyses. in Journal of Optoelectronics and Advanced Materials, 10(4), 887-890.
https://hdl.handle.net/21.15107/rcub_vinar_6751

Radosavljević-Mihajlović AS, Vulic P, Matović B, Devečerski A. Synthesis of sillenite-type compounds from zeolite precursors: XRPD and SEM/EDS analyses. in Journal of Optoelectronics and Advanced Materials. 2008;10(4):887-890.
https://hdl.handle.net/21.15107/rcub_vinar_6751 .

Radosavljević-Mihajlović, Ana S., Vulic, P., Matović, Branko, Devečerski, Aleksandar, "Synthesis of sillenite-type compounds from zeolite precursors: XRPD and SEM/EDS analyses" in Journal of Optoelectronics and Advanced Materials, 10, no. 4 (2008):887-890,
https://hdl.handle.net/21.15107/rcub_vinar_6751 .

TY  - JOUR
AU  - Djinovic, VM
AU  - Mančić, Lidija
AU  - Bogdanović, Goran A.
AU  - Vulic, PJ
AU  - del Rosario, G
AU  - Sabo, Tibor J.
AU  - Milošević, Olivera
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2889
AB  - Pure and Pt-doped ZnO nanophase particles were synthesized by ultrasonic spray pyrolysis. The particles were obtained through the decomposition of zinc nitrate and with a newly developed Pt(IV) complex with 1,3 -propylenediamine-NN-diacetate tetradentate class ligand (pdda). The complex was characterized by elemental analysis, electronic absorption and infrared spectroscopy. The form of the determined complex structure {trans-[Pt(pdda)Br-2]center dot H2O} implies that Pt(IV) ion has a distorted octahedral coordination due to intramolecular N-H center dot center dot center dot Br interaction. The results of structural refinement (cell parameters, bond lengths, and ion occupancy) of ultrasonically derived pure and Pt-doped ZnO particles suggest either the formation of Zn-i interstitials or platinum ion incorporation into the ZnO lattice in octahedral interstitial positions, respectively. A well-crystallized hexagonal wurtzite structure of ZnO was pronounced in all investigated samples [JCPDS card 36-1415, Joint Committee on Powder Diffraction Standards, defined by International Centre for Diffraction Data (www.icdd.com)]. Phase determination also indicated the presence of a nitrate hydroxide hydrate phase (JCPDS card 24-1460), as a result of incomplete precursor decomposition and a spinel Zn2PtO4 phase (below 1.0 wt%) located in the boundary region for a Pt-doped ZnO sample. Based on x-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy analyses, it was shown that the different particle growing morphologies, which were either spheroidally or pyramidally shaped, were influenced by the precursor chemistry, processing parameters and the presence of platinum ions. The composite internal particle structure revealed by transmission electron microscopy and selected area electron diffraction analyses, implied that the secondary particles represent an assembly of primary particles sized under 60 nm aroused during the processes of nucleation, growth and aggregation. Both hexagonal and spheroidal shape of primary particles was evident. The particle morphology, primarily particle size and the mechanism of Pt4+ ion introduction into the ZnO cell was discussed based on the structural refinement and selected area electron diffraction analysis.
T2  - Journal of Materials Research
T1  - Aerosol synthesis of pure and Pt-doped ZnO particles using nitrate and pdda-Pt(IV) complex solutions
VL  - 20
IS  - 1
SP  - 102
EP  - 113
DO  - 10.1557/JMR.2005.0006
ER  - 

@article{
author = "Djinovic, VM and Mančić, Lidija and Bogdanović, Goran A. and Vulic, PJ and del Rosario, G and Sabo, Tibor J. and Milošević, Olivera",
year = "2005",
abstract = "Pure and Pt-doped ZnO nanophase particles were synthesized by ultrasonic spray pyrolysis. The particles were obtained through the decomposition of zinc nitrate and with a newly developed Pt(IV) complex with 1,3 -propylenediamine-NN-diacetate tetradentate class ligand (pdda). The complex was characterized by elemental analysis, electronic absorption and infrared spectroscopy. The form of the determined complex structure {trans-[Pt(pdda)Br-2]center dot H2O} implies that Pt(IV) ion has a distorted octahedral coordination due to intramolecular N-H center dot center dot center dot Br interaction. The results of structural refinement (cell parameters, bond lengths, and ion occupancy) of ultrasonically derived pure and Pt-doped ZnO particles suggest either the formation of Zn-i interstitials or platinum ion incorporation into the ZnO lattice in octahedral interstitial positions, respectively. A well-crystallized hexagonal wurtzite structure of ZnO was pronounced in all investigated samples [JCPDS card 36-1415, Joint Committee on Powder Diffraction Standards, defined by International Centre for Diffraction Data (www.icdd.com)]. Phase determination also indicated the presence of a nitrate hydroxide hydrate phase (JCPDS card 24-1460), as a result of incomplete precursor decomposition and a spinel Zn2PtO4 phase (below 1.0 wt%) located in the boundary region for a Pt-doped ZnO sample. Based on x-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy analyses, it was shown that the different particle growing morphologies, which were either spheroidally or pyramidally shaped, were influenced by the precursor chemistry, processing parameters and the presence of platinum ions. The composite internal particle structure revealed by transmission electron microscopy and selected area electron diffraction analyses, implied that the secondary particles represent an assembly of primary particles sized under 60 nm aroused during the processes of nucleation, growth and aggregation. Both hexagonal and spheroidal shape of primary particles was evident. The particle morphology, primarily particle size and the mechanism of Pt4+ ion introduction into the ZnO cell was discussed based on the structural refinement and selected area electron diffraction analysis.",
journal = "Journal of Materials Research",
title = "Aerosol synthesis of pure and Pt-doped ZnO particles using nitrate and pdda-Pt(IV) complex solutions",
volume = "20",
number = "1",
pages = "102-113",
doi = "10.1557/JMR.2005.0006"
}

Djinovic, V., Mančić, L., Bogdanović, G. A., Vulic, P., del Rosario, G., Sabo, T. J.,& Milošević, O.. (2005). Aerosol synthesis of pure and Pt-doped ZnO particles using nitrate and pdda-Pt(IV) complex solutions. in Journal of Materials Research, 20(1), 102-113.
https://doi.org/10.1557/JMR.2005.0006

Djinovic V, Mančić L, Bogdanović GA, Vulic P, del Rosario G, Sabo TJ, Milošević O. Aerosol synthesis of pure and Pt-doped ZnO particles using nitrate and pdda-Pt(IV) complex solutions. in Journal of Materials Research. 2005;20(1):102-113.
doi:10.1557/JMR.2005.0006 .

Djinovic, VM, Mančić, Lidija, Bogdanović, Goran A., Vulic, PJ, del Rosario, G, Sabo, Tibor J., Milošević, Olivera, "Aerosol synthesis of pure and Pt-doped ZnO particles using nitrate and pdda-Pt(IV) complex solutions" in Journal of Materials Research, 20, no. 1 (2005):102-113,
https://doi.org/10.1557/JMR.2005.0006 . .