TY  - JOUR
AU  - Dojčinović, Biljana P.
AU  - Jančar, Boštjan
AU  - Bessais, Lotfi
AU  - Kremenović, Aleksandar S.
AU  - Jović-Jovičić, Nataša P.
AU  - Banković, Predrag T.
AU  - Stanković, Dalibor M.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8612
AB  - Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3-xYxO4 nanoparticles formed. The series of Fe3-xYxO4 (x = 0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200 degrees C. With increase of yttrium content (x value), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By both transmission electron microscopy and x-ray powder diffraction analyses, it was determined that the direction of growth of the spinel nanorods is along the [110] crystallographic direction. The Fe3-xYxO4 affinities of adsorption toward the inorganic arsenic species, As(III) (arsenite, AsO33-) and As(V) (arsenate, AsO43-), were investigated. Increased Y3+ content related to changes in sample morphology was followed by a decrease of As(III) removal efficiency and vice versa for As(V). The increase in Y3+ content, in addition to increasing the adsorption capacity for As(V), significantly expanded the optimum pH range for the maximum removal and decreased the contact time for necessary 50% removal (t(1/2)) of As(V) (Y00: pH 2-3, t(1/2) = 3.12 min; Y05: pH 2-6, t(1/2) = 2.12 min and Y10: pH 2-10, t(1/2) = 1.12 min). The results point to incorporation of Y3+ in the crystal lattice of magnetite, inducing nanorod spinel structure formation with significant changes in sorption properties important for the removal of inorganic arsenic from waters.
T2  - Nanotechnology
T1  - Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species
VL  - 30
IS  - 47
SP  - 475702
DO  - 10.1088/1361-6528/ab3ca2
ER  - 

@article{
author = "Dojčinović, Biljana P. and Jančar, Boštjan and Bessais, Lotfi and Kremenović, Aleksandar S. and Jović-Jovičić, Nataša P. and Banković, Predrag T. and Stanković, Dalibor M. and Ognjanović, Miloš and Antić, Bratislav",
year = "2019",
abstract = "Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3-xYxO4 nanoparticles formed. The series of Fe3-xYxO4 (x = 0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200 degrees C. With increase of yttrium content (x value), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By both transmission electron microscopy and x-ray powder diffraction analyses, it was determined that the direction of growth of the spinel nanorods is along the [110] crystallographic direction. The Fe3-xYxO4 affinities of adsorption toward the inorganic arsenic species, As(III) (arsenite, AsO33-) and As(V) (arsenate, AsO43-), were investigated. Increased Y3+ content related to changes in sample morphology was followed by a decrease of As(III) removal efficiency and vice versa for As(V). The increase in Y3+ content, in addition to increasing the adsorption capacity for As(V), significantly expanded the optimum pH range for the maximum removal and decreased the contact time for necessary 50% removal (t(1/2)) of As(V) (Y00: pH 2-3, t(1/2) = 3.12 min; Y05: pH 2-6, t(1/2) = 2.12 min and Y10: pH 2-10, t(1/2) = 1.12 min). The results point to incorporation of Y3+ in the crystal lattice of magnetite, inducing nanorod spinel structure formation with significant changes in sorption properties important for the removal of inorganic arsenic from waters.",
journal = "Nanotechnology",
title = "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species",
volume = "30",
number = "47",
pages = "475702",
doi = "10.1088/1361-6528/ab3ca2"
}

Dojčinović, B. P., Jančar, B., Bessais, L., Kremenović, A. S., Jović-Jovičić, N. P., Banković, P. T., Stanković, D. M., Ognjanović, M.,& Antić, B.. (2019). Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species. in Nanotechnology, 30(47), 475702.
https://doi.org/10.1088/1361-6528/ab3ca2

Dojčinović BP, Jančar B, Bessais L, Kremenović AS, Jović-Jovičić NP, Banković PT, Stanković DM, Ognjanović M, Antić B. Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species. in Nanotechnology. 2019;30(47):475702.
doi:10.1088/1361-6528/ab3ca2 .

Dojčinović, Biljana P., Jančar, Boštjan, Bessais, Lotfi, Kremenović, Aleksandar S., Jović-Jovičić, Nataša P., Banković, Predrag T., Stanković, Dalibor M., Ognjanović, Miloš, Antić, Bratislav, "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, 30, no. 47 (2019):475702,
https://doi.org/10.1088/1361-6528/ab3ca2 . .

TY  - JOUR
AU  - Ognjanović, Miloš
AU  - Stanković, Dalibor M.
AU  - Ming, Yue
AU  - Zhang, Hongguo
AU  - Jančar, Boštjan
AU  - Dojčinović, Biljana P.
AU  - Prijović, Željko
AU  - Antić, Bratislav
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0925838818340684
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7942
AB  - In a new approach based on a two-step procedure, co-precipitation method followed by hydrothermal treatment in a microwave field, Zn-substituted Fe3O4 nanoparticles (ZnxFe3-xO4) were synthesized. Results of XRD, FT–IR and TEM analysis clearly demonstrate that nanoparticles were single phase, crystallizing in the spinel structure type (S.G. Fd3¯m) with crystallite size in the range of 2–20 nm, which strongly depends on Zn concentration. The produced nanoparticles were used for fabrication of modified carbon paste electrodes as a novel system for electrochemical non-enzymatic glucose detection. It was found that the increase of zinc concentration up to the value of x = 0.56 (Zn0.56Fe2.44O4) of as-prepared nanoparticles was followed with an increase of a performance of the modified carbon paste electrode toward glucose detection. Linear working range from 0.1 to 2 mM was obtained with detection limit of 0.03 mM, and with fast response time (<3 s). Proposed sensor was successfully applied for the determination of glucose level in real samples with satisfactory recovery. The synthesized zinc-ferrite samples were also tested as potential heating agents in magnetic hyperthermia. The heating ability (SAR value) increases with x value, reaching maximum for x = 0.37. This is correlated with changes of particle size and magnetic characteristics which strongly depend on Zn concentration. © 2018 Elsevier B.V.
T2  - Journal of Alloys and Compounds
T1  - Bifunctional (Zn,Fe)3O4 nanoparticles: Tuning their efficiency for potential application in reagentless glucose biosensors and magnetic hyperthermia
VL  - 777
SP  - 454
EP  - 462
DO  - 10.1016/j.jallcom.2018.10.369
ER  - 

@article{
author = "Ognjanović, Miloš and Stanković, Dalibor M. and Ming, Yue and Zhang, Hongguo and Jančar, Boštjan and Dojčinović, Biljana P. and Prijović, Željko and Antić, Bratislav",
year = "2019",
abstract = "In a new approach based on a two-step procedure, co-precipitation method followed by hydrothermal treatment in a microwave field, Zn-substituted Fe3O4 nanoparticles (ZnxFe3-xO4) were synthesized. Results of XRD, FT–IR and TEM analysis clearly demonstrate that nanoparticles were single phase, crystallizing in the spinel structure type (S.G. Fd3¯m) with crystallite size in the range of 2–20 nm, which strongly depends on Zn concentration. The produced nanoparticles were used for fabrication of modified carbon paste electrodes as a novel system for electrochemical non-enzymatic glucose detection. It was found that the increase of zinc concentration up to the value of x = 0.56 (Zn0.56Fe2.44O4) of as-prepared nanoparticles was followed with an increase of a performance of the modified carbon paste electrode toward glucose detection. Linear working range from 0.1 to 2 mM was obtained with detection limit of 0.03 mM, and with fast response time (<3 s). Proposed sensor was successfully applied for the determination of glucose level in real samples with satisfactory recovery. The synthesized zinc-ferrite samples were also tested as potential heating agents in magnetic hyperthermia. The heating ability (SAR value) increases with x value, reaching maximum for x = 0.37. This is correlated with changes of particle size and magnetic characteristics which strongly depend on Zn concentration. © 2018 Elsevier B.V.",
journal = "Journal of Alloys and Compounds",
title = "Bifunctional (Zn,Fe)3O4 nanoparticles: Tuning their efficiency for potential application in reagentless glucose biosensors and magnetic hyperthermia",
volume = "777",
pages = "454-462",
doi = "10.1016/j.jallcom.2018.10.369"
}

Ognjanović, M., Stanković, D. M., Ming, Y., Zhang, H., Jančar, B., Dojčinović, B. P., Prijović, Ž.,& Antić, B.. (2019). Bifunctional (Zn,Fe)3O4 nanoparticles: Tuning their efficiency for potential application in reagentless glucose biosensors and magnetic hyperthermia. in Journal of Alloys and Compounds, 777, 454-462.
https://doi.org/10.1016/j.jallcom.2018.10.369

Ognjanović M, Stanković DM, Ming Y, Zhang H, Jančar B, Dojčinović BP, Prijović Ž, Antić B. Bifunctional (Zn,Fe)3O4 nanoparticles: Tuning their efficiency for potential application in reagentless glucose biosensors and magnetic hyperthermia. in Journal of Alloys and Compounds. 2019;777:454-462.
doi:10.1016/j.jallcom.2018.10.369 .

Ognjanović, Miloš, Stanković, Dalibor M., Ming, Yue, Zhang, Hongguo, Jančar, Boštjan, Dojčinović, Biljana P., Prijović, Željko, Antić, Bratislav, "Bifunctional (Zn,Fe)3O4 nanoparticles: Tuning their efficiency for potential application in reagentless glucose biosensors and magnetic hyperthermia" in Journal of Alloys and Compounds, 777 (2019):454-462,
https://doi.org/10.1016/j.jallcom.2018.10.369 . .

TY  - JOUR
AU  - Ognjanović, Miloš
AU  - Spasojević, Irena
AU  - Stanković, Dalibor M.
AU  - Ming, Yue
AU  - Jančar, Boštjan
AU  - Dojčinović, Biljana P.
AU  - Spasojević, Vojislav
AU  - Antić, Bratislav
PY  - 2019
UR  - https://www.ingentaconnect.com/content/10.1166/jnn.2019.16284
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8074
AB  - A series of MgxFe3-xO₄ (x ═ 0-1) nanoparticles was synthesized in order to prepare novel MgxFe3-xO₄/glassy carbon modified electrodes. Effects of magnesium content (x) on the analytical performance of the modified electrodes in the detection of gallic acid were evaluated. It was found that magnesium concentration and crystallite/particle size of the prepared nanoparticles play significant roles in the sensing properties of modified electrodes. The increase of magnesium concentration up to the value of x ═ 0.4 in MgxFe3-xO₄/glassy carbon paste was accompanied by an increase of the corresponding oxidation current of gallic acid. However, further growth of x value caused decline of the obtained oxidation current. An electroanalytical procedure was established, and the analytical performance of the proposed Mg0.4Fe2.6O₄/glassy carbon paste electrode was monitored using previously optimized experimental conditions. A working linear range from 1-39 µM gallic acid was obtained with detection limit of 0.29 µM. According to these results, the developed procedure can be applied for detection of low concentrations of gallic acid with satisfactory selectivity in the presence of some common naturally occurring compounds. Experimental results indicate that the developed procedure could be a novel approach in the detection of antioxidant, overcoming some known disadvantages such as passivation, and could be a promising replacement for sophisticated chromatographic methods.
T2  - Journal of Nanoscience and Nanotechnology
T1  - Enhancing Analytical Performance of (Mg,Fe)3O4/Glassy Carbon Electrodes by Tailoring Chemical Composition of (Mg,Fe)3O4 Nanoparticles
VL  - 19
IS  - 7
SP  - 4205
EP  - 4213
DO  - 10.1166/jnn.2019.16284
ER  - 

@article{
author = "Ognjanović, Miloš and Spasojević, Irena and Stanković, Dalibor M. and Ming, Yue and Jančar, Boštjan and Dojčinović, Biljana P. and Spasojević, Vojislav and Antić, Bratislav",
year = "2019",
abstract = "A series of MgxFe3-xO₄ (x ═ 0-1) nanoparticles was synthesized in order to prepare novel MgxFe3-xO₄/glassy carbon modified electrodes. Effects of magnesium content (x) on the analytical performance of the modified electrodes in the detection of gallic acid were evaluated. It was found that magnesium concentration and crystallite/particle size of the prepared nanoparticles play significant roles in the sensing properties of modified electrodes. The increase of magnesium concentration up to the value of x ═ 0.4 in MgxFe3-xO₄/glassy carbon paste was accompanied by an increase of the corresponding oxidation current of gallic acid. However, further growth of x value caused decline of the obtained oxidation current. An electroanalytical procedure was established, and the analytical performance of the proposed Mg0.4Fe2.6O₄/glassy carbon paste electrode was monitored using previously optimized experimental conditions. A working linear range from 1-39 µM gallic acid was obtained with detection limit of 0.29 µM. According to these results, the developed procedure can be applied for detection of low concentrations of gallic acid with satisfactory selectivity in the presence of some common naturally occurring compounds. Experimental results indicate that the developed procedure could be a novel approach in the detection of antioxidant, overcoming some known disadvantages such as passivation, and could be a promising replacement for sophisticated chromatographic methods.",
journal = "Journal of Nanoscience and Nanotechnology",
title = "Enhancing Analytical Performance of (Mg,Fe)3O4/Glassy Carbon Electrodes by Tailoring Chemical Composition of (Mg,Fe)3O4 Nanoparticles",
volume = "19",
number = "7",
pages = "4205-4213",
doi = "10.1166/jnn.2019.16284"
}

Ognjanović, M., Spasojević, I., Stanković, D. M., Ming, Y., Jančar, B., Dojčinović, B. P., Spasojević, V.,& Antić, B.. (2019). Enhancing Analytical Performance of (Mg,Fe)3O4/Glassy Carbon Electrodes by Tailoring Chemical Composition of (Mg,Fe)3O4 Nanoparticles. in Journal of Nanoscience and Nanotechnology, 19(7), 4205-4213.
https://doi.org/10.1166/jnn.2019.16284

Ognjanović M, Spasojević I, Stanković DM, Ming Y, Jančar B, Dojčinović BP, Spasojević V, Antić B. Enhancing Analytical Performance of (Mg,Fe)3O4/Glassy Carbon Electrodes by Tailoring Chemical Composition of (Mg,Fe)3O4 Nanoparticles. in Journal of Nanoscience and Nanotechnology. 2019;19(7):4205-4213.
doi:10.1166/jnn.2019.16284 .

Ognjanović, Miloš, Spasojević, Irena, Stanković, Dalibor M., Ming, Yue, Jančar, Boštjan, Dojčinović, Biljana P., Spasojević, Vojislav, Antić, Bratislav, "Enhancing Analytical Performance of (Mg,Fe)3O4/Glassy Carbon Electrodes by Tailoring Chemical Composition of (Mg,Fe)3O4 Nanoparticles" in Journal of Nanoscience and Nanotechnology, 19, no. 7 (2019):4205-4213,
https://doi.org/10.1166/jnn.2019.16284 . .

TY  - JOUR
AU  - Bošković, Marko
AU  - Goya, Gerardo F.
AU  - Vranješ-Đurić, Sanja
AU  - Jović, Nataša G.
AU  - Jančar, Boštjan
AU  - Antić, Bratislav
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/461
AB  - Herein we present the results of specific loss power (SLP) analysis of polydisperse water based ferrofluids, Fe3O4/PEG200 and Fe3O4/PEG6000, with average Fe3O4 particle size of 9 nm and 11 nm, respectively. Specific loss power was measured in alternating magnetic field of various amplitudes and at fixed frequency of 580.5 kHz. Maximum SLP values acquired were 195 W/g for Fe3O4/PEG200 and 60 W/g for Fe3O4/PEG6000 samples. The samples were labeled as superparamagnetic by magnetization measurements, but SLP field dependence showed deviation from the behavior predicted by the commonly employed linear response theory. The scope of this theory for both samples with wide particle size distribution is discussed. Deviation from the expected behavior is explained by referring to polydisperse nature of the samples and field dependent relaxation rates. (C) 2015 AIP Publishing LLC.
T2  - Journal of Applied Physics
T1  - Influence of size distribution and field amplitude on specific loss power
VL  - 117
IS  - 10
DO  - 10.1063/1.4914074
ER  - 

@article{
author = "Bošković, Marko and Goya, Gerardo F. and Vranješ-Đurić, Sanja and Jović, Nataša G. and Jančar, Boštjan and Antić, Bratislav",
year = "2015",
abstract = "Herein we present the results of specific loss power (SLP) analysis of polydisperse water based ferrofluids, Fe3O4/PEG200 and Fe3O4/PEG6000, with average Fe3O4 particle size of 9 nm and 11 nm, respectively. Specific loss power was measured in alternating magnetic field of various amplitudes and at fixed frequency of 580.5 kHz. Maximum SLP values acquired were 195 W/g for Fe3O4/PEG200 and 60 W/g for Fe3O4/PEG6000 samples. The samples were labeled as superparamagnetic by magnetization measurements, but SLP field dependence showed deviation from the behavior predicted by the commonly employed linear response theory. The scope of this theory for both samples with wide particle size distribution is discussed. Deviation from the expected behavior is explained by referring to polydisperse nature of the samples and field dependent relaxation rates. (C) 2015 AIP Publishing LLC.",
journal = "Journal of Applied Physics",
title = "Influence of size distribution and field amplitude on specific loss power",
volume = "117",
number = "10",
doi = "10.1063/1.4914074"
}

Bošković, M., Goya, G. F., Vranješ-Đurić, S., Jović, N. G., Jančar, B.,& Antić, B.. (2015). Influence of size distribution and field amplitude on specific loss power. in Journal of Applied Physics, 117(10).
https://doi.org/10.1063/1.4914074

Bošković M, Goya GF, Vranješ-Đurić S, Jović NG, Jančar B, Antić B. Influence of size distribution and field amplitude on specific loss power. in Journal of Applied Physics. 2015;117(10).
doi:10.1063/1.4914074 .

Bošković, Marko, Goya, Gerardo F., Vranješ-Đurić, Sanja, Jović, Nataša G., Jančar, Boštjan, Antić, Bratislav, "Influence of size distribution and field amplitude on specific loss power" in Journal of Applied Physics, 117, no. 10 (2015),
https://doi.org/10.1063/1.4914074 . .

TY  - JOUR
AU  - Nikolić, Aleksandar S.
AU  - Bošković, Marko
AU  - Spasojević, Vojislav
AU  - Jančar, Boštjan
AU  - Antić, Bratislav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5939
AB  - Magnetic nanocomposites can show enhanced properties compared to their single phase counterparts. Novel soft ferrite Fe3O4/soft ferrite MnFe2O4 nanocomposite, as well as pure MnFe2O4 and Fe3O4 for the sake of comparison, were synthesized by co-precipitation method. The spinel type of structure (space group Fd (3) over barm) of the samples was confirmed by XRPD and SAED. Samples are composed of spherical particles with size in the range 5-15 nm. Nanocomposite (92 wt%) MnFe2O4/(8 wt%) Fe3O4 exert single phase like magnetic behavior. Saturation magnetization (M-S) of Fe3O4/MnFe2O4 is 26% greater than M-S of MnFe2O4 and even 50% than M-S of Fe3O4. At the same time coercivity field of the nanocomposite is twice less value (H-C=180 Oe) than in binary ferrites (H-C=360 Oe). Magnetization enhancement and softening in Magnetite/Mn-ferrite is discussed related to particle interactions among two different ferrites and intrinsic properties of nanoparticles. Tailoring phase ratio and synthesis conditions can be a tool for tuning magnetic properties of nanocomposites. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Magnetite/Mn-ferrite nanocomposite with improved magnetic properties
VL  - 120
SP  - 86
EP  - 89
DO  - 10.1016/j.matlet.2014.01.023
ER  - 

@article{
author = "Nikolić, Aleksandar S. and Bošković, Marko and Spasojević, Vojislav and Jančar, Boštjan and Antić, Bratislav",
year = "2014",
abstract = "Magnetic nanocomposites can show enhanced properties compared to their single phase counterparts. Novel soft ferrite Fe3O4/soft ferrite MnFe2O4 nanocomposite, as well as pure MnFe2O4 and Fe3O4 for the sake of comparison, were synthesized by co-precipitation method. The spinel type of structure (space group Fd (3) over barm) of the samples was confirmed by XRPD and SAED. Samples are composed of spherical particles with size in the range 5-15 nm. Nanocomposite (92 wt%) MnFe2O4/(8 wt%) Fe3O4 exert single phase like magnetic behavior. Saturation magnetization (M-S) of Fe3O4/MnFe2O4 is 26% greater than M-S of MnFe2O4 and even 50% than M-S of Fe3O4. At the same time coercivity field of the nanocomposite is twice less value (H-C=180 Oe) than in binary ferrites (H-C=360 Oe). Magnetization enhancement and softening in Magnetite/Mn-ferrite is discussed related to particle interactions among two different ferrites and intrinsic properties of nanoparticles. Tailoring phase ratio and synthesis conditions can be a tool for tuning magnetic properties of nanocomposites. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Magnetite/Mn-ferrite nanocomposite with improved magnetic properties",
volume = "120",
pages = "86-89",
doi = "10.1016/j.matlet.2014.01.023"
}

Nikolić, A. S., Bošković, M., Spasojević, V., Jančar, B.,& Antić, B.. (2014). Magnetite/Mn-ferrite nanocomposite with improved magnetic properties. in Materials Letters, 120, 86-89.
https://doi.org/10.1016/j.matlet.2014.01.023

Nikolić AS, Bošković M, Spasojević V, Jančar B, Antić B. Magnetite/Mn-ferrite nanocomposite with improved magnetic properties. in Materials Letters. 2014;120:86-89.
doi:10.1016/j.matlet.2014.01.023 .

Nikolić, Aleksandar S., Bošković, Marko, Spasojević, Vojislav, Jančar, Boštjan, Antić, Bratislav, "Magnetite/Mn-ferrite nanocomposite with improved magnetic properties" in Materials Letters, 120 (2014):86-89,
https://doi.org/10.1016/j.matlet.2014.01.023 . .

TY  - JOUR
AU  - Vučinić-Vasić, Milica
AU  - Božin, Emil S.
AU  - Bessais, Lotfi
AU  - Stojanovic, G.
AU  - Kozmidis-Luburic, U.
AU  - Abeykoon, M.
AU  - Jančar, Boštjan
AU  - Meden, A.
AU  - Kremenović, Aleksandar S.
AU  - Antić, Bratislav
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5555
AB  - Evolution of the structural and magnetic properties of ZnFe1.95Yb0.05O4 nanoparticles, prepared via a high-energy ball milling route and exposed to further thermal annealing/heating, was assessed in detail and correlation of these properties explored. inversion, heating of the sample to similar to 500 degrees C is found to rapidly alter the cation distribution from mixed to normal, in agreement with the known cation preferences. Under the same conditions the crystallite size only slowly grows. By further thermal treatment appreciably. An interrelationship among the lattice parameter, octahedral site occupancy, and crystallite size has been established. The observations are (a) both the site occupancy of Fe3+ at octahedral 16d spinel sites (N-16d(Fe3+)) and the cubic lattice parameter rapidly increase with an initial increase of the crystallite size, (b) the lattice parameter increases with increasing occupancy, N-16d(Fe3+), and (c) there appears to be a critical nanoparticle diameter (approximately 15 nm) above which both the site occupancy and lattice parameter values are saturated. The magnetic behavior of the annealed samples appears to be correlated to the evolution of both the cation distribution and crystallite size, as follows. As-prepared samples and those annealed at lower temperatures show superparamagnetic behavior at room temperature, presumably as a consequence of the Fe3+ distribution and strong Fe3+(8a)-O-Fe3+(16d) superexchange interactions. Samples with a nanopartide diameter greater than 12 nm and with almost normal distributions exhibit the paramagnetic state. The coercive field is found to decrease with an increase of the crystallite size. Partial Yb3+/Fe3+ substitution is found to increase the inversion parameter and saturation magnetization. Detailed knowledge of the thermal evolution of structural/microstructural parameters allows control over the cation distribution and crystallite size and hence the magnetic properties of nanoferrites.
T2  - Journal of Physical Chemistry. C
T1  - Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles
VL  - 117
IS  - 23
SP  - 12358
EP  - 12365
DO  - 10.1021/jp403459t
ER  - 

@article{
author = "Vučinić-Vasić, Milica and Božin, Emil S. and Bessais, Lotfi and Stojanovic, G. and Kozmidis-Luburic, U. and Abeykoon, M. and Jančar, Boštjan and Meden, A. and Kremenović, Aleksandar S. and Antić, Bratislav",
year = "2013",
abstract = "Evolution of the structural and magnetic properties of ZnFe1.95Yb0.05O4 nanoparticles, prepared via a high-energy ball milling route and exposed to further thermal annealing/heating, was assessed in detail and correlation of these properties explored. inversion, heating of the sample to similar to 500 degrees C is found to rapidly alter the cation distribution from mixed to normal, in agreement with the known cation preferences. Under the same conditions the crystallite size only slowly grows. By further thermal treatment appreciably. An interrelationship among the lattice parameter, octahedral site occupancy, and crystallite size has been established. The observations are (a) both the site occupancy of Fe3+ at octahedral 16d spinel sites (N-16d(Fe3+)) and the cubic lattice parameter rapidly increase with an initial increase of the crystallite size, (b) the lattice parameter increases with increasing occupancy, N-16d(Fe3+), and (c) there appears to be a critical nanoparticle diameter (approximately 15 nm) above which both the site occupancy and lattice parameter values are saturated. The magnetic behavior of the annealed samples appears to be correlated to the evolution of both the cation distribution and crystallite size, as follows. As-prepared samples and those annealed at lower temperatures show superparamagnetic behavior at room temperature, presumably as a consequence of the Fe3+ distribution and strong Fe3+(8a)-O-Fe3+(16d) superexchange interactions. Samples with a nanopartide diameter greater than 12 nm and with almost normal distributions exhibit the paramagnetic state. The coercive field is found to decrease with an increase of the crystallite size. Partial Yb3+/Fe3+ substitution is found to increase the inversion parameter and saturation magnetization. Detailed knowledge of the thermal evolution of structural/microstructural parameters allows control over the cation distribution and crystallite size and hence the magnetic properties of nanoferrites.",
journal = "Journal of Physical Chemistry. C",
title = "Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles",
volume = "117",
number = "23",
pages = "12358-12365",
doi = "10.1021/jp403459t"
}

Vučinić-Vasić, M., Božin, E. S., Bessais, L., Stojanovic, G., Kozmidis-Luburic, U., Abeykoon, M., Jančar, B., Meden, A., Kremenović, A. S.,& Antić, B.. (2013). Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles. in Journal of Physical Chemistry. C, 117(23), 12358-12365.
https://doi.org/10.1021/jp403459t

Vučinić-Vasić M, Božin ES, Bessais L, Stojanovic G, Kozmidis-Luburic U, Abeykoon M, Jančar B, Meden A, Kremenović AS, Antić B. Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles. in Journal of Physical Chemistry. C. 2013;117(23):12358-12365.
doi:10.1021/jp403459t .

Vučinić-Vasić, Milica, Božin, Emil S., Bessais, Lotfi, Stojanovic, G., Kozmidis-Luburic, U., Abeykoon, M., Jančar, Boštjan, Meden, A., Kremenović, Aleksandar S., Antić, Bratislav, "Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles" in Journal of Physical Chemistry. C, 117, no. 23 (2013):12358-12365,
https://doi.org/10.1021/jp403459t . .

TY  - JOUR
AU  - Kremenović, Aleksandar S.
AU  - Božanić, Dušan K.
AU  - Welsch, A. -M.
AU  - Jančar, Boštjan
AU  - Nikolić, Aleksandar S.
AU  - Bošković, Marko
AU  - Colomban, Ph.
AU  - Fabian, Martin
AU  - Antić, Bratislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5320
AB  - The 5-10 nnn Ce1-XEuXO2-delta (0 LT = x LT = 0.30) nanoparticles with fluorite structure were synthesized by thermal decomposition of Eu- and Ce-2,4-pentanedione complexes mixtures. X-ray line broadening analysis of mixed samples Ce1-XEuXO2-delta (0.05 LT = x LT = 0.30) showed that the crystallite size was lower and root mean square strain higher than in pure ceria. However, within mixed samples Ce1-XEuXO2-delta (0.05 LT = x LT = 0.30) crystallite size and root mean square strain were independent of Eu3+ concentration. Raman spectroscopy results indicated that europium ions yield disorder by breaking the phonon propagation and therefore making the non-centre Brillouin zone modes Raman active. The absorption bands in the spectra of mixed oxides were blue-shifted in comparison to pure CeO2-delta nanopowder. The samples show red emission typical for Eu ions. The biggest photoluminescent intensity was observed for the highest Eu3+ concentration (x = 0.30) and further enhanced with the increase in crystallinity.
T2  - Journal of Nanoscience and Nanotechnology
T1  - Effects of Eu3+ Concentration on Structural, Optical and Vibrational Properties of Multifunctional Ce1-X,EuXO2-delta Nanoparticles Synthesized by Thermolysis of 2,4-Pentanedione Complexes
VL  - 12
IS  - 12
SP  - 8893
EP  - 8899
DO  - 10.1166/jnn.2012.6797
ER  - 

@article{
author = "Kremenović, Aleksandar S. and Božanić, Dušan K. and Welsch, A. -M. and Jančar, Boštjan and Nikolić, Aleksandar S. and Bošković, Marko and Colomban, Ph. and Fabian, Martin and Antić, Bratislav",
year = "2012",
abstract = "The 5-10 nnn Ce1-XEuXO2-delta (0 LT = x LT = 0.30) nanoparticles with fluorite structure were synthesized by thermal decomposition of Eu- and Ce-2,4-pentanedione complexes mixtures. X-ray line broadening analysis of mixed samples Ce1-XEuXO2-delta (0.05 LT = x LT = 0.30) showed that the crystallite size was lower and root mean square strain higher than in pure ceria. However, within mixed samples Ce1-XEuXO2-delta (0.05 LT = x LT = 0.30) crystallite size and root mean square strain were independent of Eu3+ concentration. Raman spectroscopy results indicated that europium ions yield disorder by breaking the phonon propagation and therefore making the non-centre Brillouin zone modes Raman active. The absorption bands in the spectra of mixed oxides were blue-shifted in comparison to pure CeO2-delta nanopowder. The samples show red emission typical for Eu ions. The biggest photoluminescent intensity was observed for the highest Eu3+ concentration (x = 0.30) and further enhanced with the increase in crystallinity.",
journal = "Journal of Nanoscience and Nanotechnology",
title = "Effects of Eu3+ Concentration on Structural, Optical and Vibrational Properties of Multifunctional Ce1-X,EuXO2-delta Nanoparticles Synthesized by Thermolysis of 2,4-Pentanedione Complexes",
volume = "12",
number = "12",
pages = "8893-8899",
doi = "10.1166/jnn.2012.6797"
}

Kremenović, A. S., Božanić, D. K., Welsch, A. -M., Jančar, B., Nikolić, A. S., Bošković, M., Colomban, Ph., Fabian, M.,& Antić, B.. (2012). Effects of Eu3+ Concentration on Structural, Optical and Vibrational Properties of Multifunctional Ce1-X,EuXO2-delta Nanoparticles Synthesized by Thermolysis of 2,4-Pentanedione Complexes. in Journal of Nanoscience and Nanotechnology, 12(12), 8893-8899.
https://doi.org/10.1166/jnn.2012.6797

Kremenović AS, Božanić DK, Welsch A-, Jančar B, Nikolić AS, Bošković M, Colomban P, Fabian M, Antić B. Effects of Eu3+ Concentration on Structural, Optical and Vibrational Properties of Multifunctional Ce1-X,EuXO2-delta Nanoparticles Synthesized by Thermolysis of 2,4-Pentanedione Complexes. in Journal of Nanoscience and Nanotechnology. 2012;12(12):8893-8899.
doi:10.1166/jnn.2012.6797 .

Kremenović, Aleksandar S., Božanić, Dušan K., Welsch, A. -M., Jančar, Boštjan, Nikolić, Aleksandar S., Bošković, Marko, Colomban, Ph., Fabian, Martin, Antić, Bratislav, "Effects of Eu3+ Concentration on Structural, Optical and Vibrational Properties of Multifunctional Ce1-X,EuXO2-delta Nanoparticles Synthesized by Thermolysis of 2,4-Pentanedione Complexes" in Journal of Nanoscience and Nanotechnology, 12, no. 12 (2012):8893-8899,
https://doi.org/10.1166/jnn.2012.6797 . .

TY  - JOUR
AU  - Jović, Nataša G.
AU  - Prekajski, Marija D.
AU  - Kremenović, Aleksandar S.
AU  - Jančar, Boštjan
AU  - Kahlenberg, V.
AU  - Antić, Bratislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4721
AB  - alpha-lithium ferrite (Li0.5Fe2.5O4) nanoparticles have been prepared using two synthesis routes: citrate gel decomposition as well as the Pechini method. Analysis of HRTEM images of the particles showed that they have a core/shell structure, an average size of similar to 10 nm and stacking faults parallel to the (110) planes. In both samples, the distribution of the Li and Fe cations was found to be partially ordered on the octahedral sites (Wyckoff positions 4b and 12d of space group P4(3)32). According to literature data, Li0.5Fe2.5O4 should adopt a disordered spinel structure (so called beta-phase, space group Fd (3) over barm) for crystallites of 10 nm or less in size. In this study it is shown that (a) the symmetry of the Li0.5Fe2.5O4 nanoparticles depends on the degree of their crystallinity and (b) the ordered crystal structures can be formed even for crystallites of 5-6 nm in size. By fitting the room temperature Mossbauer spectra it was obtained that the hyperfine field values are lower in the sample synthesized by the Pechini method. The Pechini process probably resulted in larger distortions of the cation environments than the citrate gel decomposition method. The saturation magnetization in turn was higher for the material obtained by the gel decomposition approach. (C) 2012 American Institute of Physics. [doi:10.1063/1.3684554]
T2  - Journal of Applied Physics
T1  - Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles
VL  - 111
IS  - 3
DO  - 10.1063/1.3684554
ER  - 

@article{
author = "Jović, Nataša G. and Prekajski, Marija D. and Kremenović, Aleksandar S. and Jančar, Boštjan and Kahlenberg, V. and Antić, Bratislav",
year = "2012",
abstract = "alpha-lithium ferrite (Li0.5Fe2.5O4) nanoparticles have been prepared using two synthesis routes: citrate gel decomposition as well as the Pechini method. Analysis of HRTEM images of the particles showed that they have a core/shell structure, an average size of similar to 10 nm and stacking faults parallel to the (110) planes. In both samples, the distribution of the Li and Fe cations was found to be partially ordered on the octahedral sites (Wyckoff positions 4b and 12d of space group P4(3)32). According to literature data, Li0.5Fe2.5O4 should adopt a disordered spinel structure (so called beta-phase, space group Fd (3) over barm) for crystallites of 10 nm or less in size. In this study it is shown that (a) the symmetry of the Li0.5Fe2.5O4 nanoparticles depends on the degree of their crystallinity and (b) the ordered crystal structures can be formed even for crystallites of 5-6 nm in size. By fitting the room temperature Mossbauer spectra it was obtained that the hyperfine field values are lower in the sample synthesized by the Pechini method. The Pechini process probably resulted in larger distortions of the cation environments than the citrate gel decomposition method. The saturation magnetization in turn was higher for the material obtained by the gel decomposition approach. (C) 2012 American Institute of Physics. [doi:10.1063/1.3684554]",
journal = "Journal of Applied Physics",
title = "Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles",
volume = "111",
number = "3",
doi = "10.1063/1.3684554"
}

Jović, N. G., Prekajski, M. D., Kremenović, A. S., Jančar, B., Kahlenberg, V.,& Antić, B.. (2012). Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles. in Journal of Applied Physics, 111(3).
https://doi.org/10.1063/1.3684554

Jović NG, Prekajski MD, Kremenović AS, Jančar B, Kahlenberg V, Antić B. Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles. in Journal of Applied Physics. 2012;111(3).
doi:10.1063/1.3684554 .

Jović, Nataša G., Prekajski, Marija D., Kremenović, Aleksandar S., Jančar, Boštjan, Kahlenberg, V., Antić, Bratislav, "Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles" in Journal of Applied Physics, 111, no. 3 (2012),
https://doi.org/10.1063/1.3684554 . .

TY  - JOUR
AU  - Kremenović, Aleksandar S.
AU  - Jančar, Boštjan
AU  - Ristić, Mira
AU  - Vučinić-Vasić, Milica
AU  - Rogan, Jelena R.
AU  - Pacevski, Aleksandar
AU  - Antić, Bratislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4726
AB  - Transition-metal-oxide/transition-metal nanocomposites, such as NiO/Ni, FeO/Fe, and CoO/Co, have been the subject of much recent investigation (i) because of their potential applications and (ii) because they are good model systems for studies of some effects on the nanoscale. They are used, for example, as catalysts, fuel-cell electrodes, magnetic memories, etc. When a nanocomposite is composed of both ferromagnetic (FM) and antiferromagnetic (AFM) nanoparticles, interesting physical properties can occur, such as the phenomenon of exchange bias (EB). A Ni/NiO nanocomposite obtained by the thermal decomposition of nickel(II) acetate tetrahydrate, Ni(CH3COO)(2)center dot 4H(2)O, at 300 degrees C, is composed of NiO (62%) and Ni (38%) with crystallite sizes of 11 and 278 nm, respectively. We observed an increase in the crystallite size for NiO and decrease of crystallite size for Ni, a decrease in the microstrain for both and an increase in the NiO phase content with thermal annealing in air, while high-energy ball milling leads to a decrease of the crystallite size, an increase in the size of the agglomerates, and microstrain as well as reduction, NiO - GT Ni. The lattice parameters of the nanosized NiO and Ni show a deviation from the value for the bulk counterparts as a consequence of crystallite size reduction and the grain-surface relaxation effect. The exchange bias found in a milled sample with particles of 10 nm (NiO) and 11 nm (Ni) disappears for larger particles as a consequence of a coupling-area decrease between the antiferromagnetic and ferromagnetic particles. Due to reduction/oxidation (NiO LT - GT Ni) and size as well as surface-relaxation effects the saturation magnetization value increases/decreases with milling/annealing, respectively. Having in mind the effect of size on the exchange bias, coercivity, and magnetization values, it is possible, by annealing/milling, to tailor the composition and particle size and then control the exchange bias and improve the other magnetic properties of the Ni/NiO.
T2  - Journal of Physical Chemistry. C
T1  - Exchange-Bias and Grain-Surface Relaxations in Nanostructured NiO/Ni Induced by a Particle Size Reduction
VL  - 116
IS  - 7
SP  - 4356
EP  - 4364
DO  - 10.1021/jp206658v
ER  - 

@article{
author = "Kremenović, Aleksandar S. and Jančar, Boštjan and Ristić, Mira and Vučinić-Vasić, Milica and Rogan, Jelena R. and Pacevski, Aleksandar and Antić, Bratislav",
year = "2012",
abstract = "Transition-metal-oxide/transition-metal nanocomposites, such as NiO/Ni, FeO/Fe, and CoO/Co, have been the subject of much recent investigation (i) because of their potential applications and (ii) because they are good model systems for studies of some effects on the nanoscale. They are used, for example, as catalysts, fuel-cell electrodes, magnetic memories, etc. When a nanocomposite is composed of both ferromagnetic (FM) and antiferromagnetic (AFM) nanoparticles, interesting physical properties can occur, such as the phenomenon of exchange bias (EB). A Ni/NiO nanocomposite obtained by the thermal decomposition of nickel(II) acetate tetrahydrate, Ni(CH3COO)(2)center dot 4H(2)O, at 300 degrees C, is composed of NiO (62%) and Ni (38%) with crystallite sizes of 11 and 278 nm, respectively. We observed an increase in the crystallite size for NiO and decrease of crystallite size for Ni, a decrease in the microstrain for both and an increase in the NiO phase content with thermal annealing in air, while high-energy ball milling leads to a decrease of the crystallite size, an increase in the size of the agglomerates, and microstrain as well as reduction, NiO - GT Ni. The lattice parameters of the nanosized NiO and Ni show a deviation from the value for the bulk counterparts as a consequence of crystallite size reduction and the grain-surface relaxation effect. The exchange bias found in a milled sample with particles of 10 nm (NiO) and 11 nm (Ni) disappears for larger particles as a consequence of a coupling-area decrease between the antiferromagnetic and ferromagnetic particles. Due to reduction/oxidation (NiO LT - GT Ni) and size as well as surface-relaxation effects the saturation magnetization value increases/decreases with milling/annealing, respectively. Having in mind the effect of size on the exchange bias, coercivity, and magnetization values, it is possible, by annealing/milling, to tailor the composition and particle size and then control the exchange bias and improve the other magnetic properties of the Ni/NiO.",
journal = "Journal of Physical Chemistry. C",
title = "Exchange-Bias and Grain-Surface Relaxations in Nanostructured NiO/Ni Induced by a Particle Size Reduction",
volume = "116",
number = "7",
pages = "4356-4364",
doi = "10.1021/jp206658v"
}

Kremenović, A. S., Jančar, B., Ristić, M., Vučinić-Vasić, M., Rogan, J. R., Pacevski, A.,& Antić, B.. (2012). Exchange-Bias and Grain-Surface Relaxations in Nanostructured NiO/Ni Induced by a Particle Size Reduction. in Journal of Physical Chemistry. C, 116(7), 4356-4364.
https://doi.org/10.1021/jp206658v

Kremenović AS, Jančar B, Ristić M, Vučinić-Vasić M, Rogan JR, Pacevski A, Antić B. Exchange-Bias and Grain-Surface Relaxations in Nanostructured NiO/Ni Induced by a Particle Size Reduction. in Journal of Physical Chemistry. C. 2012;116(7):4356-4364.
doi:10.1021/jp206658v .

Kremenović, Aleksandar S., Jančar, Boštjan, Ristić, Mira, Vučinić-Vasić, Milica, Rogan, Jelena R., Pacevski, Aleksandar, Antić, Bratislav, "Exchange-Bias and Grain-Surface Relaxations in Nanostructured NiO/Ni Induced by a Particle Size Reduction" in Journal of Physical Chemistry. C, 116, no. 7 (2012):4356-4364,
https://doi.org/10.1021/jp206658v . .

TY  - JOUR
AU  - Radović, Magdalena
AU  - Vranješ-Đurić, Sanja
AU  - Nikolić, Nadežda S.
AU  - Janković, Drina
AU  - Goya, Gerardo F.
AU  - Torres, Teobaldo E.
AU  - Calatayud, Maria Pilar
AU  - Bruvera, Ignacio J.
AU  - Ibarra, M. Ricardo
AU  - Spasojević, Vojislav
AU  - Jančar, Boštjan
AU  - Antić, Bratislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5175
AB  - Radio labeled albumin microspheres with encapsulated citric acid-coated magnetite nanoparticles were developed as a targeting approach to localize both radioactivity and magnetic energy at the tumor site. We present in vitro and in vivo studies of yttrium-90 (Y-90)-labeled human scrum albumin magnetic microspheres (HSAMMS) as a multifunctional agent for possible applications in a bimodal radionuclide-hyperthermia cancer therapy. The HSAMMS were produced using a modified emulsification-heat stabilization technique and contained 11 nm magnetite nanoparticles coated with citric acid, distributed as inhomogeneous clusters within the albumin microspheres. The size, size distribution and the morphology of magnetite nanoparticles and HSAMMS were determined by FESEM, HRTEM and SEM/FIB dual beam. The average particle size of the complete HSAMMS was 20 mu m, and they exhibited superparamagnetic behavior at room temperature. The in vitro experiments (in saline and human serum) revealed the high stability of the labeled HSAMMS in saline and human serum after 72 h. Following the intravenous administration of the Y-90-HSAMMS in rats, 88.81% of the activity localizes in the lungs after 1 h, with 82.67% remaining after 72 h. These data on Y-90-HSAMMS provide good evidence for their potential use in bimodal radionuclide-hyperthermia cancer therapy.
T2  - Journal of Materials Chemistry
T1  - Development and evaluation of Y-90-labeled albumin microspheres loaded with magnetite nanoparticles for possible applications in cancer therapy
VL  - 22
IS  - 45
SP  - 24017
EP  - 24025
DO  - 10.1039/c2jm35593k
ER  - 

@article{
author = "Radović, Magdalena and Vranješ-Đurić, Sanja and Nikolić, Nadežda S. and Janković, Drina and Goya, Gerardo F. and Torres, Teobaldo E. and Calatayud, Maria Pilar and Bruvera, Ignacio J. and Ibarra, M. Ricardo and Spasojević, Vojislav and Jančar, Boštjan and Antić, Bratislav",
year = "2012",
abstract = "Radio labeled albumin microspheres with encapsulated citric acid-coated magnetite nanoparticles were developed as a targeting approach to localize both radioactivity and magnetic energy at the tumor site. We present in vitro and in vivo studies of yttrium-90 (Y-90)-labeled human scrum albumin magnetic microspheres (HSAMMS) as a multifunctional agent for possible applications in a bimodal radionuclide-hyperthermia cancer therapy. The HSAMMS were produced using a modified emulsification-heat stabilization technique and contained 11 nm magnetite nanoparticles coated with citric acid, distributed as inhomogeneous clusters within the albumin microspheres. The size, size distribution and the morphology of magnetite nanoparticles and HSAMMS were determined by FESEM, HRTEM and SEM/FIB dual beam. The average particle size of the complete HSAMMS was 20 mu m, and they exhibited superparamagnetic behavior at room temperature. The in vitro experiments (in saline and human serum) revealed the high stability of the labeled HSAMMS in saline and human serum after 72 h. Following the intravenous administration of the Y-90-HSAMMS in rats, 88.81% of the activity localizes in the lungs after 1 h, with 82.67% remaining after 72 h. These data on Y-90-HSAMMS provide good evidence for their potential use in bimodal radionuclide-hyperthermia cancer therapy.",
journal = "Journal of Materials Chemistry",
title = "Development and evaluation of Y-90-labeled albumin microspheres loaded with magnetite nanoparticles for possible applications in cancer therapy",
volume = "22",
number = "45",
pages = "24017-24025",
doi = "10.1039/c2jm35593k"
}

Radović, M., Vranješ-Đurić, S., Nikolić, N. S., Janković, D., Goya, G. F., Torres, T. E., Calatayud, M. P., Bruvera, I. J., Ibarra, M. R., Spasojević, V., Jančar, B.,& Antić, B.. (2012). Development and evaluation of Y-90-labeled albumin microspheres loaded with magnetite nanoparticles for possible applications in cancer therapy. in Journal of Materials Chemistry, 22(45), 24017-24025.
https://doi.org/10.1039/c2jm35593k

Radović M, Vranješ-Đurić S, Nikolić NS, Janković D, Goya GF, Torres TE, Calatayud MP, Bruvera IJ, Ibarra MR, Spasojević V, Jančar B, Antić B. Development and evaluation of Y-90-labeled albumin microspheres loaded with magnetite nanoparticles for possible applications in cancer therapy. in Journal of Materials Chemistry. 2012;22(45):24017-24025.
doi:10.1039/c2jm35593k .

Radović, Magdalena, Vranješ-Đurić, Sanja, Nikolić, Nadežda S., Janković, Drina, Goya, Gerardo F., Torres, Teobaldo E., Calatayud, Maria Pilar, Bruvera, Ignacio J., Ibarra, M. Ricardo, Spasojević, Vojislav, Jančar, Boštjan, Antić, Bratislav, "Development and evaluation of Y-90-labeled albumin microspheres loaded with magnetite nanoparticles for possible applications in cancer therapy" in Journal of Materials Chemistry, 22, no. 45 (2012):24017-24025,
https://doi.org/10.1039/c2jm35593k . .

TY  - JOUR
AU  - Vukomanovic, Marija
AU  - Škapin, Srečo Davor
AU  - Jančar, Boštjan
AU  - Maksin, Tatjana N.
AU  - Ignjatović, Nenad L.
AU  - Uskokovic, Vuk
AU  - Uskoković, Dragan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4188
AB  - Biodegradable poly(D,L-lactide-co-glycolide) (PLGA) and bioactive hydroxyapatite (HAP) are selected for the formation of a multifunctional system with the specific core-shell structure to be applied as a carrier of a drug. As a result, both components of PLGA/HAp core-shells are able to capture one part of the drug. Polymeric shells consisting of small nanospheres up to 20 nm in size act as a matrix in which one part of the drug is dispersed. In the same time, ceramic cores are formed of rod-like hydroxyapatite particles at the surface of which another part of the drug is adsorbed onto the interface between the polymer and the ceramics. The content of the loaded drug, as well as the selected solvent/non-solvent system, have a crucial influence on the resulting PLGA/HAp morphology and, finally, unimodal distribution of core-shells is obtained. The redistribution of the drug between the organic and inorganic parts of the material is expected to provide an interesting contribution to the kinetics of the drug release resulting in non-typical two-step drug release. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. B: Biointerfaces
T1  - Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery
VL  - 82
IS  - 2
SP  - 404
EP  - 413
DO  - 10.1016/j.colsurfb.2010.09.011
ER  - 

@article{
author = "Vukomanovic, Marija and Škapin, Srečo Davor and Jančar, Boštjan and Maksin, Tatjana N. and Ignjatović, Nenad L. and Uskokovic, Vuk and Uskoković, Dragan",
year = "2011",
abstract = "Biodegradable poly(D,L-lactide-co-glycolide) (PLGA) and bioactive hydroxyapatite (HAP) are selected for the formation of a multifunctional system with the specific core-shell structure to be applied as a carrier of a drug. As a result, both components of PLGA/HAp core-shells are able to capture one part of the drug. Polymeric shells consisting of small nanospheres up to 20 nm in size act as a matrix in which one part of the drug is dispersed. In the same time, ceramic cores are formed of rod-like hydroxyapatite particles at the surface of which another part of the drug is adsorbed onto the interface between the polymer and the ceramics. The content of the loaded drug, as well as the selected solvent/non-solvent system, have a crucial influence on the resulting PLGA/HAp morphology and, finally, unimodal distribution of core-shells is obtained. The redistribution of the drug between the organic and inorganic parts of the material is expected to provide an interesting contribution to the kinetics of the drug release resulting in non-typical two-step drug release. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. B: Biointerfaces",
title = "Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery",
volume = "82",
number = "2",
pages = "404-413",
doi = "10.1016/j.colsurfb.2010.09.011"
}

Vukomanovic, M., Škapin, S. D., Jančar, B., Maksin, T. N., Ignjatović, N. L., Uskokovic, V.,& Uskoković, D.. (2011). Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery. in Colloids and Surfaces. B: Biointerfaces, 82(2), 404-413.
https://doi.org/10.1016/j.colsurfb.2010.09.011

Vukomanovic M, Škapin SD, Jančar B, Maksin TN, Ignjatović NL, Uskokovic V, Uskoković D. Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery. in Colloids and Surfaces. B: Biointerfaces. 2011;82(2):404-413.
doi:10.1016/j.colsurfb.2010.09.011 .

Vukomanovic, Marija, Škapin, Srečo Davor, Jančar, Boštjan, Maksin, Tatjana N., Ignjatović, Nenad L., Uskokovic, Vuk, Uskoković, Dragan, "Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery" in Colloids and Surfaces. B: Biointerfaces, 82, no. 2 (2011):404-413,
https://doi.org/10.1016/j.colsurfb.2010.09.011 . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Kremenović, Aleksandar S.
AU  - Vučinić-Vasić, Milica
AU  - Dohcevic-Mitrovic, Z.
AU  - Nikolić, Aleksandar S.
AU  - Gruden-Pavlović, Maja
AU  - Jančar, Boštjan
AU  - Meden, A.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4015
AB  - After controlled thermal degradation of acetylacetonato (AA) complexes, mixtures of monodisperse similar to 5 nm large isometric particles of Y2-xYbxO3 (x = 0.06, 0.10, 0.20, 0.40) were synthesized. Detailed information on nanoparticles microstructure and core crystal structure is reported. The Yb3+ ions occupy preferently C-3i sites for low Yb3+ concentrations, while for 20 at.% Yb3+, a random distribution was found. It was shown that the particle/crystallite size and strain as well as Raman modes positions and widths are influenced by Yb3+ concentration. Crystallographic and Raman spectroscopy results indicate that the particles are core/shell structured with cubic crystalline core and monoclinic-like disordered shell. Most probable particles shell/core volume ratio decreased with annealing at 500 degrees C and the shell disappeared when annealed at 1000 degrees C. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes
VL  - 122
IS  - 2-3
SP  - 386
EP  - 391
DO  - 10.1016/j.matchemphys.2010.03.010
ER  - 

@article{
author = "Antić, Bratislav and Kremenović, Aleksandar S. and Vučinić-Vasić, Milica and Dohcevic-Mitrovic, Z. and Nikolić, Aleksandar S. and Gruden-Pavlović, Maja and Jančar, Boštjan and Meden, A.",
year = "2010",
abstract = "After controlled thermal degradation of acetylacetonato (AA) complexes, mixtures of monodisperse similar to 5 nm large isometric particles of Y2-xYbxO3 (x = 0.06, 0.10, 0.20, 0.40) were synthesized. Detailed information on nanoparticles microstructure and core crystal structure is reported. The Yb3+ ions occupy preferently C-3i sites for low Yb3+ concentrations, while for 20 at.% Yb3+, a random distribution was found. It was shown that the particle/crystallite size and strain as well as Raman modes positions and widths are influenced by Yb3+ concentration. Crystallographic and Raman spectroscopy results indicate that the particles are core/shell structured with cubic crystalline core and monoclinic-like disordered shell. Most probable particles shell/core volume ratio decreased with annealing at 500 degrees C and the shell disappeared when annealed at 1000 degrees C. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes",
volume = "122",
number = "2-3",
pages = "386-391",
doi = "10.1016/j.matchemphys.2010.03.010"
}

Antić, B., Kremenović, A. S., Vučinić-Vasić, M., Dohcevic-Mitrovic, Z., Nikolić, A. S., Gruden-Pavlović, M., Jančar, B.,& Meden, A.. (2010). Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes. in Materials Chemistry and Physics, 122(2-3), 386-391.
https://doi.org/10.1016/j.matchemphys.2010.03.010

Antić B, Kremenović AS, Vučinić-Vasić M, Dohcevic-Mitrovic Z, Nikolić AS, Gruden-Pavlović M, Jančar B, Meden A. Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes. in Materials Chemistry and Physics. 2010;122(2-3):386-391.
doi:10.1016/j.matchemphys.2010.03.010 .

Antić, Bratislav, Kremenović, Aleksandar S., Vučinić-Vasić, Milica, Dohcevic-Mitrovic, Z., Nikolić, Aleksandar S., Gruden-Pavlović, Maja, Jančar, Boštjan, Meden, A., "Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes" in Materials Chemistry and Physics, 122, no. 2-3 (2010):386-391,
https://doi.org/10.1016/j.matchemphys.2010.03.010 . .

TY  - JOUR
AU  - Jevtic, M.
AU  - Mitrić, Miodrag
AU  - Škapin, Srečo Davor
AU  - Jančar, Boštjan
AU  - Ignjatović, Nenad L.
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3486
AB  - Using a homogeneous precipitation method in an ultrasound field, we synthesized nanosized, platelike hydroxyapatite (HAp). The internal structure of these platelike formations consists of specifically oriented and laterally connected nanorods. The synthesized HAp nanorods have a length of about 500 nm and a diameter of about 100 nm. A, closer inspection of the microstructure of a single nanorod revealed a highly regular and defect-free lattice with unique crystallographic plane orientations. The obtained structure was related to the influence of the ultrasound on the growth mechanism. The samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission, electron microscopy (TEM).
T2  - Crystal Growth and Design
T1  - Crystal structure of hydroxyapatite nanorods synthesized by sonochemical homogeneous precipitation
VL  - 8
IS  - 7
SP  - 2217
EP  - 2222
DO  - 10.1021/cg7007304
ER  - 

@article{
author = "Jevtic, M. and Mitrić, Miodrag and Škapin, Srečo Davor and Jančar, Boštjan and Ignjatović, Nenad L. and Uskoković, Dragan",
year = "2008",
abstract = "Using a homogeneous precipitation method in an ultrasound field, we synthesized nanosized, platelike hydroxyapatite (HAp). The internal structure of these platelike formations consists of specifically oriented and laterally connected nanorods. The synthesized HAp nanorods have a length of about 500 nm and a diameter of about 100 nm. A, closer inspection of the microstructure of a single nanorod revealed a highly regular and defect-free lattice with unique crystallographic plane orientations. The obtained structure was related to the influence of the ultrasound on the growth mechanism. The samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission, electron microscopy (TEM).",
journal = "Crystal Growth and Design",
title = "Crystal structure of hydroxyapatite nanorods synthesized by sonochemical homogeneous precipitation",
volume = "8",
number = "7",
pages = "2217-2222",
doi = "10.1021/cg7007304"
}

Jevtic, M., Mitrić, M., Škapin, S. D., Jančar, B., Ignjatović, N. L.,& Uskoković, D.. (2008). Crystal structure of hydroxyapatite nanorods synthesized by sonochemical homogeneous precipitation. in Crystal Growth and Design, 8(7), 2217-2222.
https://doi.org/10.1021/cg7007304

Jevtic M, Mitrić M, Škapin SD, Jančar B, Ignjatović NL, Uskoković D. Crystal structure of hydroxyapatite nanorods synthesized by sonochemical homogeneous precipitation. in Crystal Growth and Design. 2008;8(7):2217-2222.
doi:10.1021/cg7007304 .

Jevtic, M., Mitrić, Miodrag, Škapin, Srečo Davor, Jančar, Boštjan, Ignjatović, Nenad L., Uskoković, Dragan, "Crystal structure of hydroxyapatite nanorods synthesized by sonochemical homogeneous precipitation" in Crystal Growth and Design, 8, no. 7 (2008):2217-2222,
https://doi.org/10.1021/cg7007304 . .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Jančar, Boštjan
AU  - Mentus, Slavko V.
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3457
AB  - Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.
T2  - Solid State Ionics
T1  - Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method
VL  - 179
IS  - 11-12
SP  - 415
EP  - 419
DO  - 10.1016/j.ssi.2008.03.014
ER  - 

@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Jančar, Boštjan and Mentus, Slavko V. and Uskoković, Dragan",
year = "2008",
abstract = "Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.",
journal = "Solid State Ionics",
title = "Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method",
volume = "179",
number = "11-12",
pages = "415-419",
doi = "10.1016/j.ssi.2008.03.014"
}

Jugović, D., Mitrić, M., Cvjetićanin, N., Jančar, B., Mentus, S. V.,& Uskoković, D.. (2008). Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method. in Solid State Ionics, 179(11-12), 415-419.
https://doi.org/10.1016/j.ssi.2008.03.014

Jugović D, Mitrić M, Cvjetićanin N, Jančar B, Mentus SV, Uskoković D. Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method. in Solid State Ionics. 2008;179(11-12):415-419.
doi:10.1016/j.ssi.2008.03.014 .

Jugović, Dragana, Mitrić, Miodrag, Cvjetićanin, Nikola, Jančar, Boštjan, Mentus, Slavko V., Uskoković, Dragan, "Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method" in Solid State Ionics, 179, no. 11-12 (2008):415-419,
https://doi.org/10.1016/j.ssi.2008.03.014 . .

TY  - JOUR
AU  - Kremenović, Aleksandar S.
AU  - Antić, Bratislav
AU  - Nikolić, Aleksandar S.
AU  - Blanuša, Jovan
AU  - Jančar, Boštjan
AU  - Meden, A.
AU  - Mentus, Slavko V.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3308
AB  - A novel synthesis route based on thermal decomposition of yttrium and gadolinium complexes with 2,4-pentanedione ligand has been used to synthesize 5 nn size (Y0.9Gd0.1)(2)O-3 powder. Refinement of occupancy parameters revealed that Gd3+ ions preferably occupy C-3i sites in host Y2O3, forming a material with a metastable cation distribution. The average crystallite size was found to increase, and the average microstrain to decrease, as the annealing temperature is increased, while the Gd3+ ion distribution remained metastable in nature. Small anisotropic X-ray powder diffraction pattern line broadening due to crystallite size effects was observed. The inverse susceptibility of the 5 nn sample exhibits unusual break in slope to a smaller value below 2.7 K. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
T2  - Scripta Materialia
T1  - The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd2O3/Y2O3
VL  - 57
IS  - 12
SP  - 1061
EP  - 1064
DO  - 10.1016/j.scriptamat.2007.09.002
ER  - 

@article{
author = "Kremenović, Aleksandar S. and Antić, Bratislav and Nikolić, Aleksandar S. and Blanuša, Jovan and Jančar, Boštjan and Meden, A. and Mentus, Slavko V.",
year = "2007",
abstract = "A novel synthesis route based on thermal decomposition of yttrium and gadolinium complexes with 2,4-pentanedione ligand has been used to synthesize 5 nn size (Y0.9Gd0.1)(2)O-3 powder. Refinement of occupancy parameters revealed that Gd3+ ions preferably occupy C-3i sites in host Y2O3, forming a material with a metastable cation distribution. The average crystallite size was found to increase, and the average microstrain to decrease, as the annealing temperature is increased, while the Gd3+ ion distribution remained metastable in nature. Small anisotropic X-ray powder diffraction pattern line broadening due to crystallite size effects was observed. The inverse susceptibility of the 5 nn sample exhibits unusual break in slope to a smaller value below 2.7 K. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",
journal = "Scripta Materialia",
title = "The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd2O3/Y2O3",
volume = "57",
number = "12",
pages = "1061-1064",
doi = "10.1016/j.scriptamat.2007.09.002"
}

Kremenović, A. S., Antić, B., Nikolić, A. S., Blanuša, J., Jančar, B., Meden, A.,& Mentus, S. V.. (2007). The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd2O3/Y2O3. in Scripta Materialia, 57(12), 1061-1064.
https://doi.org/10.1016/j.scriptamat.2007.09.002

Kremenović AS, Antić B, Nikolić AS, Blanuša J, Jančar B, Meden A, Mentus SV. The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd2O3/Y2O3. in Scripta Materialia. 2007;57(12):1061-1064.
doi:10.1016/j.scriptamat.2007.09.002 .

Kremenović, Aleksandar S., Antić, Bratislav, Nikolić, Aleksandar S., Blanuša, Jovan, Jančar, Boštjan, Meden, A., Mentus, Slavko V., "The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd2O3/Y2O3" in Scripta Materialia, 57, no. 12 (2007):1061-1064,
https://doi.org/10.1016/j.scriptamat.2007.09.002 . .