Mraković, Ana Đ.

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Authority KeyName Variants
orcid::0000-0003-4569-5857
  • Mraković, Ana Đ. (29)
Projects
Magnetic and radionuclide labeled nanostructured materials for medical applications Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden
Chemical and structural designing of nanomaterials for application in medicine and tissue engineering Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them
Strukturne i magnetne osobine nanočestičnih i polikristalnih oksida retkih zemalja i 3d metala. Bilateral project between the Republic of Serbia and Republic of Montenegro (2019-2020) "Recycling and valorization of wasted seashells"
CNRS Chaire Total Visiting Professorship Program CNR Short Term Mobility Program
COST action [MP1306] German Academic Exchange Service - DAAD (Project ID: 57140416)
German Federal Ministry of Education and Research - BMBF (FKZ 01PL11082B) Strengthening of the MagBioVin Research and Innovation Team for Development of Novel Approaches for Tumour Therapy based on Nanostructured Materials
Physical processes in the synthesis of advanced nanostructured materials Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions
Studies of enzyme interactions with toxic and pharmacologically active molecules Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia”
Physics and Chemistry with Ion Beams Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine
Lithium-ion batteries and fuel cells - research and development Functional physiologically active plant materials with additional values for application in pharmaceutical and food industry
Synthesis, processing and applications of nanostructured multifunctional materials with defined properties Ministry of Education and Science of the Russian Federation [3.9002.2017/6.7]
Ministry of Science and Environmental Protection of Serbia [141027] RFBR [17-32-50202\17]
Russian Academic Excellence Project at the Immanuel Kant Baltic Federal University Serbian-Slovenian bilateral project [BI-RS/16-17-030]
Slovenian Research Agency [P2-0082] Slovenian Research Agency [P2-0091]

Author's Bibliography

Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid

Mravik, Željko; Bajuk-Bogdanović, Danica V.; Mraković, Ana Đ.; Vukosavljević, Ljubiša; Trajić, Ivan; Kovač, Janez; Peruško, Davor; Gavrilov, Nemanja; Jovanović, Zoran M.

(2021)

TY  - JOUR
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mraković, Ana Đ.
AU  - Vukosavljević, Ljubiša
AU  - Trajić, Ivan
AU  - Kovač, Janez
AU  - Peruško, Davor
AU  - Gavrilov, Nemanja
AU  - Jovanović, Zoran M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9150
AB  - In recent years polyoxometalates (POMs) have attracted significant research interest due to versatile properties. These properties are determined by the size, structure and elemental composition of POMs and hence play an important role in their application. In the present study, the ion beam irradiation (10 keV C+ ions, 5 × 1014–2.5 × 1015 ions/cm2) has been utilized for modification of physicochemical properties of 120 nm-thick layer of 12-tungstophosphoric acid (WPA). Scanning electron microscopy analysis of irradiated films showed change of morphology i.e. an increase of WPA grain size with irradiation and coalescence of grains at the highest fluence. This was accompanied by structural changes. Attenuated total reflectance Fourier transform infrared analysis revealed that vibration bands of Keggin anion became less pronounced as fluence increased, while Raman spectra appeared as strongly modified. The effect of irradiation with 1.25 × 1015 ions/cm2 on the structure of WPA was similar to the effect of thermal treatment at 600 °C. Irradiation of WPA led to decrease of the band gap (from 4.07 to 3.92 eV), which was correlated to transformation Keggin anions into a network of WO6 octahedra and PO4 tetrahedra. This is in line with increased number of W=Od bonds observed by UV–Visible diffuse reflectance spectroscopy. Beside transformation to bronzes a reduction of WPA was observed by X-ray Photoelectron Spectroscopy (shift to lower binding energy) and Raman methods, whereas the Raman spectra of irradiated samples were similar to heteropoly blue. The electrochemical properties of irradiated WPA were also assessed. Cyclic voltammetry measurements showed that at up to 1.25 × 1015 ions/cm2 lithiation capacity of WPA increases and activity for hydrogen evolution reaction (HER) improves. The highest fluence caused interconnection of WO6 octahedra, closing of lithiation pathways and decrease in the number of active sites for HER. Our results provide a novel insight into the effects of ion beam irradiation on WPA and demonstrate high potential for tuning of physicochemical properties of POMs that are relevant in wide range of applications. © 2021 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid
VL  - 183
SP  - 109422
DO  - 10.1016/j.radphyschem.2021.109422
ER  - 
@article{
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Mraković, Ana Đ. and Vukosavljević, Ljubiša and Trajić, Ivan and Kovač, Janez and Peruško, Davor and Gavrilov, Nemanja and Jovanović, Zoran M.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9150",
abstract = "In recent years polyoxometalates (POMs) have attracted significant research interest due to versatile properties. These properties are determined by the size, structure and elemental composition of POMs and hence play an important role in their application. In the present study, the ion beam irradiation (10 keV C+ ions, 5 × 1014–2.5 × 1015 ions/cm2) has been utilized for modification of physicochemical properties of 120 nm-thick layer of 12-tungstophosphoric acid (WPA). Scanning electron microscopy analysis of irradiated films showed change of morphology i.e. an increase of WPA grain size with irradiation and coalescence of grains at the highest fluence. This was accompanied by structural changes. Attenuated total reflectance Fourier transform infrared analysis revealed that vibration bands of Keggin anion became less pronounced as fluence increased, while Raman spectra appeared as strongly modified. The effect of irradiation with 1.25 × 1015 ions/cm2 on the structure of WPA was similar to the effect of thermal treatment at 600 °C. Irradiation of WPA led to decrease of the band gap (from 4.07 to 3.92 eV), which was correlated to transformation Keggin anions into a network of WO6 octahedra and PO4 tetrahedra. This is in line with increased number of W=Od bonds observed by UV–Visible diffuse reflectance spectroscopy. Beside transformation to bronzes a reduction of WPA was observed by X-ray Photoelectron Spectroscopy (shift to lower binding energy) and Raman methods, whereas the Raman spectra of irradiated samples were similar to heteropoly blue. The electrochemical properties of irradiated WPA were also assessed. Cyclic voltammetry measurements showed that at up to 1.25 × 1015 ions/cm2 lithiation capacity of WPA increases and activity for hydrogen evolution reaction (HER) improves. The highest fluence caused interconnection of WO6 octahedra, closing of lithiation pathways and decrease in the number of active sites for HER. Our results provide a novel insight into the effects of ion beam irradiation on WPA and demonstrate high potential for tuning of physicochemical properties of POMs that are relevant in wide range of applications. © 2021 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid",
volume = "183",
pages = "109422",
doi = "10.1016/j.radphyschem.2021.109422"
}
Mravik, Ž., Bajuk-Bogdanović, D. V., Mraković, A. Đ., Vukosavljević, L., Trajić, I., Kovač, J., Peruško, D., Gavrilov, N.,& Jovanović, Z. M. (2021). Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid.
Radiation Physics and Chemistry, 183, 109422.
https://doi.org/10.1016/j.radphyschem.2021.109422
Mravik Ž, Bajuk-Bogdanović DV, Mraković AĐ, Vukosavljević L, Trajić I, Kovač J, Peruško D, Gavrilov N, Jovanović ZM. Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid. Radiation Physics and Chemistry. 2021;183:109422
Mravik Željko, Bajuk-Bogdanović Danica V., Mraković Ana Đ., Vukosavljević Ljubiša, Trajić Ivan, Kovač Janez, Peruško Davor, Gavrilov Nemanja, Jovanović Zoran M., "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid" Radiation Physics and Chemistry, 183 (2021):109422,
https://doi.org/10.1016/j.radphyschem.2021.109422 .

Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors

Janković, Bojan Ž.; Smičiklas, Ivana D.; Manić, Nebojša G.; Mraković, Ana Đ.; Mandić, Milica; Veljović, Đorđe N.; Jović, Mihajlo

(2020)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Smičiklas, Ivana D.
AU  - Manić, Nebojša G.
AU  - Mraković, Ana Đ.
AU  - Mandić, Milica
AU  - Veljović, Đorđe N.
AU  - Jović, Mihajlo
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8836
AB  - Thermo-oxidative degradation of mollusk shells to CaO through intermediate phase of CaCO3 has been investigated using various analytical techniques. Powders of shells species (Dosinia exoleta and Ostrea edulis), with particle size fractions of 0.045 – 0.125 mm, 0.125–0.2 mm, and 0.2–1 mm, were subjected to degradation at the various heating rates (5, 10, 15 and 20 °C min−1). Degradation pathway of this carbonate-rich waste material has not yet been analyzed in detail at particulate level. Understanding transformation process in air should lead to control over yield and morphology of final product. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) techniques were used to benchmark transformation steps at different heating rates and final decarbonation temperatures, while scanning electron microscope (SEM) was used to analyze the effect of temperature on evolution of morphological changes for particles of different fractions. It was found that sintering in the presence of carbon dioxide (CO2) could be triggered by agglomeration of CaO crystals, enhanced by CO2 adsorption that increases surface energy. © 2020 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors
VL  - 686
SP  - 178568
DO  - 10.1016/j.tca.2020.178568
ER  - 
@article{
author = "Janković, Bojan Ž. and Smičiklas, Ivana D. and Manić, Nebojša G. and Mraković, Ana Đ. and Mandić, Milica and Veljović, Đorđe N. and Jović, Mihajlo",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8836",
abstract = "Thermo-oxidative degradation of mollusk shells to CaO through intermediate phase of CaCO3 has been investigated using various analytical techniques. Powders of shells species (Dosinia exoleta and Ostrea edulis), with particle size fractions of 0.045 – 0.125 mm, 0.125–0.2 mm, and 0.2–1 mm, were subjected to degradation at the various heating rates (5, 10, 15 and 20 °C min−1). Degradation pathway of this carbonate-rich waste material has not yet been analyzed in detail at particulate level. Understanding transformation process in air should lead to control over yield and morphology of final product. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) techniques were used to benchmark transformation steps at different heating rates and final decarbonation temperatures, while scanning electron microscope (SEM) was used to analyze the effect of temperature on evolution of morphological changes for particles of different fractions. It was found that sintering in the presence of carbon dioxide (CO2) could be triggered by agglomeration of CaO crystals, enhanced by CO2 adsorption that increases surface energy. © 2020 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors",
volume = "686",
pages = "178568",
doi = "10.1016/j.tca.2020.178568"
}
Janković, B. Ž., Smičiklas, I. D., Manić, N. G., Mraković, A. Đ., Mandić, M., Veljović, Đ. N.,& Jović, M. (2020). Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors.
Thermochimica Acta, 686, 178568.
https://doi.org/10.1016/j.tca.2020.178568
Janković BŽ, Smičiklas ID, Manić NG, Mraković AĐ, Mandić M, Veljović ĐN, Jović M. Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. Thermochimica Acta. 2020;686:178568
Janković Bojan Ž., Smičiklas Ivana D., Manić Nebojša G., Mraković Ana Đ., Mandić Milica, Veljović Đorđe N., Jović Mihajlo, "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors" Thermochimica Acta, 686 (2020):178568,
https://doi.org/10.1016/j.tca.2020.178568 .
3
1
1

Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release

Milovanović, Stoja; Marković, Darka; Mraković, Ana Đ.; Kuska, Robert; Žižović, Irena T.; Frerich, Sulamith; Ivanović, Jasna

(2019)

TY  - JOUR
AU  - Milovanović, Stoja
AU  - Marković, Darka
AU  - Mraković, Ana Đ.
AU  - Kuska, Robert
AU  - Žižović, Irena T.
AU  - Frerich, Sulamith
AU  - Ivanović, Jasna
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0928493117342169
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8041
AB  - Amorphous, medical grade poly(D,L-lactic acid) (PLA) and poly(D,L-lactic-co-glycolic acid) (PLGA) were used to develop systems for controlled release of a natural bioactive substance - thymol. Supercritical carbon dioxide (scCO2) was successfully used both as an impregnation medium for thymol incorporation into the polymer matrix and a foaming agent in a single-step batch process. Impregnation of samples using low to moderate scCO2 densities (273 kg/m3 and 630 kg/m3) and short processing times (2 h and 4 h) enabled thymol loading of 0.92%–6.62% and formation of microcellular foams upon system depressurization. Thymol effect on structural and thermal properties on foamed samples was proven by FTIR and DSC. The effect of CO2 under elevated pressure on the neat polymers was analysed by high pressure DSC. Foaming of polymers with lower molecular weight by CO2 of higher density yielded foams with smaller pores. All tested foams released thymol in a controlled manner in phosphate buffered saline (PBS) at 37 °C within 3 to 6 weeks. Higher loading and lower cell density favoured thymol release rate, while its concentration in PBS for the tested period depended on foam interaction with the medium. Representative PLGA foam sample with the highest thymol loading (6.62%) showed controlled thymol release within 72 h in mediums having pH values from 1.1 to 7.4. © 2019 Elsevier B.V.
T2  - Materials Science and Engineering: C
T1  - Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release
VL  - 99
SP  - 394
EP  - 404
DO  - 10.1016/j.msec.2019.01.106
ER  - 
@article{
author = "Milovanović, Stoja and Marković, Darka and Mraković, Ana Đ. and Kuska, Robert and Žižović, Irena T. and Frerich, Sulamith and Ivanović, Jasna",
year = "2019",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0928493117342169, http://vinar.vin.bg.ac.rs/handle/123456789/8041",
abstract = "Amorphous, medical grade poly(D,L-lactic acid) (PLA) and poly(D,L-lactic-co-glycolic acid) (PLGA) were used to develop systems for controlled release of a natural bioactive substance - thymol. Supercritical carbon dioxide (scCO2) was successfully used both as an impregnation medium for thymol incorporation into the polymer matrix and a foaming agent in a single-step batch process. Impregnation of samples using low to moderate scCO2 densities (273 kg/m3 and 630 kg/m3) and short processing times (2 h and 4 h) enabled thymol loading of 0.92%–6.62% and formation of microcellular foams upon system depressurization. Thymol effect on structural and thermal properties on foamed samples was proven by FTIR and DSC. The effect of CO2 under elevated pressure on the neat polymers was analysed by high pressure DSC. Foaming of polymers with lower molecular weight by CO2 of higher density yielded foams with smaller pores. All tested foams released thymol in a controlled manner in phosphate buffered saline (PBS) at 37 °C within 3 to 6 weeks. Higher loading and lower cell density favoured thymol release rate, while its concentration in PBS for the tested period depended on foam interaction with the medium. Representative PLGA foam sample with the highest thymol loading (6.62%) showed controlled thymol release within 72 h in mediums having pH values from 1.1 to 7.4. © 2019 Elsevier B.V.",
journal = "Materials Science and Engineering: C",
title = "Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release",
volume = "99",
pages = "394-404",
doi = "10.1016/j.msec.2019.01.106"
}
Milovanović, S., Marković, D., Mraković, A. Đ., Kuska, R., Žižović, I. T., Frerich, S.,& Ivanović, J. (2019). Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release.
Materials Science and Engineering: C, 99, 394-404.
https://doi.org/10.1016/j.msec.2019.01.106
Milovanović S, Marković D, Mraković AĐ, Kuska R, Žižović IT, Frerich S, Ivanović J. Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release. Materials Science and Engineering: C. 2019;99:394-404
Milovanović Stoja, Marković Darka, Mraković Ana Đ., Kuska Robert, Žižović Irena T., Frerich Sulamith, Ivanović Jasna, "Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release" Materials Science and Engineering: C, 99 (2019):394-404,
https://doi.org/10.1016/j.msec.2019.01.106 .
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25

Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste

Egerić, Marija; Smičiklas, Ivana D.; Mraković, Ana Đ.; Jović, Mihajlo D.; Šljivić-Ivanović, Marija Z.; Antanasijević, Davor Z.; Ristić, Mirjana

(2018)

TY  - JOUR
AU  - Egerić, Marija
AU  - Smičiklas, Ivana D.
AU  - Mraković, Ana Đ.
AU  - Jović, Mihajlo D.
AU  - Šljivić-Ivanović, Marija Z.
AU  - Antanasijević, Davor Z.
AU  - Ristić, Mirjana
PY  - 2018
UR  - http://doi.wiley.com/10.1002/jctb.5516
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7657
AB  - BACKGROUNDSeashell waste (SW) is rich in biogenic calcium carbonate and potentially can substitute geological sources in various applications, such as the separation of heavy metals and radionuclides from contaminated solutions. This study aims to compare SW sorption efficiency towards different chemical species (Cu2+, Zn2+, Pb2+ and Sr2+) and to evaluate the effects of various factors based on the experimental data and modeling approach. RESULTSThe reaction of SW with aqueous metal solutions is a combination of several processes that result in metal retention, Ca2+ release, and changes in pH. SW demonstrates variable selectivity for investigated cations, depending on their concentrations and reaction times. Maximum sorption capacities declined in the order Zn2+ > Pb2+ approximate to Sr2+ > Cu2+. The model based on general regression neural network (GRNN) architecture was developed, which enabled prediction of removal efficiency taking into account the process specific, metal specific parameters and their non-linear interactions. Initial concentration and covalent radius of a cation exhibit the highest, while the initial pH the lowest significance. CONCLUSIONEcological problems caused by SW accumulation in coastal areas could be mitigated by mastering technologies for their practical utilization. The results obtained facilitate the understanding of cationic pollutants removal by SW in the range of experimental conditions, while the GRNN approach demonstrates advantages in modeling complex sorption processes. (c) 2017 Society of Chemical Industry
T2  - Journal of Chemical Technology & Biotechnology
T1  - Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste
VL  - 93
IS  - 5
SP  - 1477
EP  - 1487
DO  - 10.1002/jctb.5516
ER  - 
@article{
author = "Egerić, Marija and Smičiklas, Ivana D. and Mraković, Ana Đ. and Jović, Mihajlo D. and Šljivić-Ivanović, Marija Z. and Antanasijević, Davor Z. and Ristić, Mirjana",
year = "2018",
url = "http://doi.wiley.com/10.1002/jctb.5516, http://vinar.vin.bg.ac.rs/handle/123456789/7657",
abstract = "BACKGROUNDSeashell waste (SW) is rich in biogenic calcium carbonate and potentially can substitute geological sources in various applications, such as the separation of heavy metals and radionuclides from contaminated solutions. This study aims to compare SW sorption efficiency towards different chemical species (Cu2+, Zn2+, Pb2+ and Sr2+) and to evaluate the effects of various factors based on the experimental data and modeling approach. RESULTSThe reaction of SW with aqueous metal solutions is a combination of several processes that result in metal retention, Ca2+ release, and changes in pH. SW demonstrates variable selectivity for investigated cations, depending on their concentrations and reaction times. Maximum sorption capacities declined in the order Zn2+ > Pb2+ approximate to Sr2+ > Cu2+. The model based on general regression neural network (GRNN) architecture was developed, which enabled prediction of removal efficiency taking into account the process specific, metal specific parameters and their non-linear interactions. Initial concentration and covalent radius of a cation exhibit the highest, while the initial pH the lowest significance. CONCLUSIONEcological problems caused by SW accumulation in coastal areas could be mitigated by mastering technologies for their practical utilization. The results obtained facilitate the understanding of cationic pollutants removal by SW in the range of experimental conditions, while the GRNN approach demonstrates advantages in modeling complex sorption processes. (c) 2017 Society of Chemical Industry",
journal = "Journal of Chemical Technology & Biotechnology",
title = "Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste",
volume = "93",
number = "5",
pages = "1477-1487",
doi = "10.1002/jctb.5516"
}
Egerić, M., Smičiklas, I. D., Mraković, A. Đ., Jović, M. D., Šljivić-Ivanović, M. Z., Antanasijević, D. Z.,& Ristić, M. (2018). Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste.
Journal of Chemical Technology & Biotechnology, 93(5), 1477-1487.
https://doi.org/10.1002/jctb.5516
Egerić M, Smičiklas ID, Mraković AĐ, Jović MD, Šljivić-Ivanović MZ, Antanasijević DZ, Ristić M. Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste. Journal of Chemical Technology & Biotechnology. 2018;93(5):1477-1487
Egerić Marija, Smičiklas Ivana D., Mraković Ana Đ., Jović Mihajlo D., Šljivić-Ivanović Marija Z., Antanasijević Davor Z., Ristić Mirjana, "Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste" Journal of Chemical Technology & Biotechnology, 93, no. 5 (2018):1477-1487,
https://doi.org/10.1002/jctb.5516 .
5
4
4

Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste

Šljivić-Ivanović, Marija Z.; Jelić, Ivana V.; Dimović, Slavko; Antonijević, Dragi Lj.; Jović, Mihajlo D.; Mraković, Ana Đ.; Smičiklas, Ivana D.

(2018)

TY  - JOUR
AU  - Šljivić-Ivanović, Marija Z.
AU  - Jelić, Ivana V.
AU  - Dimović, Slavko
AU  - Antonijević, Dragi Lj.
AU  - Jović, Mihajlo D.
AU  - Mraković, Ana Đ.
AU  - Smičiklas, Ivana D.
PY  - 2018
UR  - http://link.springer.com/10.1007/s10098-018-1563-x
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7818
AB  - In this study, the applicability of waste concrete as a sorbent material for the liquid radioactive waste management was considered. The sample was properly characterized in terms of mineralogical and surface composition, particles morphology, radioactivity, and of the behavior in aqueous solutions at different solid/liquid ratios and pH values. Since radioactive isotopes of Sr, Co and Ni are significant components of the liquid radioactive waste, sequestering of their ions from aqueous media was studied in single and multi-component batch sorption systems. The capacity of waste concrete decreased in the order Ni2+(0.54 mmol/g) > Co2+(0.32 mmol/g) > Sr2+(0.25 mmol/g). Concurrent sorption was analyzed using Simplex Centroid Experimental Design and the coefficients that correspond to the linear and interaction terms were obtained using a special cubic model. The presented results demonstrate the potential of waste concrete in the radioactive waste treatment and conditioning, due to its high sorption capacity and compatibility with the solidification matrices.
T2  - Clean Technologies and Environmental Policy
T1  - Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste
VL  - 20
IS  - 6
SP  - 1343
EP  - 1354
DO  - 10.1007/s10098-018-1563-x
ER  - 
@article{
author = "Šljivić-Ivanović, Marija Z. and Jelić, Ivana V. and Dimović, Slavko and Antonijević, Dragi Lj. and Jović, Mihajlo D. and Mraković, Ana Đ. and Smičiklas, Ivana D.",
year = "2018",
url = "http://link.springer.com/10.1007/s10098-018-1563-x, http://vinar.vin.bg.ac.rs/handle/123456789/7818",
abstract = "In this study, the applicability of waste concrete as a sorbent material for the liquid radioactive waste management was considered. The sample was properly characterized in terms of mineralogical and surface composition, particles morphology, radioactivity, and of the behavior in aqueous solutions at different solid/liquid ratios and pH values. Since radioactive isotopes of Sr, Co and Ni are significant components of the liquid radioactive waste, sequestering of their ions from aqueous media was studied in single and multi-component batch sorption systems. The capacity of waste concrete decreased in the order Ni2+(0.54 mmol/g) > Co2+(0.32 mmol/g) > Sr2+(0.25 mmol/g). Concurrent sorption was analyzed using Simplex Centroid Experimental Design and the coefficients that correspond to the linear and interaction terms were obtained using a special cubic model. The presented results demonstrate the potential of waste concrete in the radioactive waste treatment and conditioning, due to its high sorption capacity and compatibility with the solidification matrices.",
journal = "Clean Technologies and Environmental Policy",
title = "Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste",
volume = "20",
number = "6",
pages = "1343-1354",
doi = "10.1007/s10098-018-1563-x"
}
Šljivić-Ivanović, M. Z., Jelić, I. V., Dimović, S., Antonijević, D. Lj., Jović, M. D., Mraković, A. Đ.,& Smičiklas, I. D. (2018). Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste.
Clean Technologies and Environmental Policy, 20(6), 1343-1354.
https://doi.org/10.1007/s10098-018-1563-x
Šljivić-Ivanović MZ, Jelić IV, Dimović S, Antonijević DL, Jović MD, Mraković AĐ, Smičiklas ID. Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste. Clean Technologies and Environmental Policy. 2018;20(6):1343-1354
Šljivić-Ivanović Marija Z., Jelić Ivana V., Dimović Slavko, Antonijević Dragi Lj., Jović Mihajlo D., Mraković Ana Đ., Smičiklas Ivana D., "Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste" Clean Technologies and Environmental Policy, 20, no. 6 (2018):1343-1354,
https://doi.org/10.1007/s10098-018-1563-x .
5
3
3

Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste

Egerić, Marija; Smičiklas, Ivana D.; Mraković, Ana Đ.; Jović, Mihajlo D.; Šljivić-Ivanović, Marija Z.; Sokolović, Jovica; Ristić, Mirjana

(2018)

TY  - JOUR
AU  - Egerić, Marija
AU  - Smičiklas, Ivana D.
AU  - Mraković, Ana Đ.
AU  - Jović, Mihajlo D.
AU  - Šljivić-Ivanović, Marija Z.
AU  - Sokolović, Jovica
AU  - Ristić, Mirjana
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7986
AB  - The limestone and lime are agents widely used for separation of toxic metals from contaminated water. To reduce the exploitation of natural limestone deposits, appropriate replacements are sought out among the waste materials and by-products. Seashells, accumulated as an abundant waste in coastal areas, have high content of calcium carbonate and so far have shown high efficiency in neutralization and metal immobilization processes. In this study, the removal of Cu(II) ions was investigated using grounded seashell waste (a) without any pretreatment and (b) exposed to temperature treatment in the range 300-900 degrees C. The influence of temperature on the mineral phase transformation, solution pH and the removal efficiency of Cu(II) ions was monitored. Treatments at T > 500 degrees C exhibit positive effect on Cu(II) separation, with the samples partially or completely converted to calcium oxide being the most effective in the entire Cu(II) concentration range (6.34-639 mg/L). The efficiency of Cu(II) removal was largely associated with the effect on solution pH. The two level full factorial design was used to evaluate the significance of seashell composition (calcium carbonate vs. calcium oxide), granulation, dose and contact time, on the separation of Cu(II) and other cationic pollutants (Fe, Zn, Ni and Pb) from wastewater. The seashell dose and granulation, as well as their interaction, were generally the most influential factors. The variations in the levels of investigated factors had a substantial effect on the process through the indirect effect onto the solution pH. More than 99% of Cu(II) ions were separated at pH > 7, while the final pH range 8.2-12.2 was found optimal for total metal separation (97.6-98.9%).
T2  - Desalination and Water Treatment
T1  - Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste
VL  - 132
SP  - 205
EP  - 214
DO  - 10.5004/dwt.2018.23131
ER  - 
@article{
author = "Egerić, Marija and Smičiklas, Ivana D. and Mraković, Ana Đ. and Jović, Mihajlo D. and Šljivić-Ivanović, Marija Z. and Sokolović, Jovica and Ristić, Mirjana",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7986",
abstract = "The limestone and lime are agents widely used for separation of toxic metals from contaminated water. To reduce the exploitation of natural limestone deposits, appropriate replacements are sought out among the waste materials and by-products. Seashells, accumulated as an abundant waste in coastal areas, have high content of calcium carbonate and so far have shown high efficiency in neutralization and metal immobilization processes. In this study, the removal of Cu(II) ions was investigated using grounded seashell waste (a) without any pretreatment and (b) exposed to temperature treatment in the range 300-900 degrees C. The influence of temperature on the mineral phase transformation, solution pH and the removal efficiency of Cu(II) ions was monitored. Treatments at T > 500 degrees C exhibit positive effect on Cu(II) separation, with the samples partially or completely converted to calcium oxide being the most effective in the entire Cu(II) concentration range (6.34-639 mg/L). The efficiency of Cu(II) removal was largely associated with the effect on solution pH. The two level full factorial design was used to evaluate the significance of seashell composition (calcium carbonate vs. calcium oxide), granulation, dose and contact time, on the separation of Cu(II) and other cationic pollutants (Fe, Zn, Ni and Pb) from wastewater. The seashell dose and granulation, as well as their interaction, were generally the most influential factors. The variations in the levels of investigated factors had a substantial effect on the process through the indirect effect onto the solution pH. More than 99% of Cu(II) ions were separated at pH > 7, while the final pH range 8.2-12.2 was found optimal for total metal separation (97.6-98.9%).",
journal = "Desalination and Water Treatment",
title = "Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste",
volume = "132",
pages = "205-214",
doi = "10.5004/dwt.2018.23131"
}
Egerić, M., Smičiklas, I. D., Mraković, A. Đ., Jović, M. D., Šljivić-Ivanović, M. Z., Sokolović, J.,& Ristić, M. (2018). Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste.
Desalination and Water Treatment, 132, 205-214.
https://doi.org/10.5004/dwt.2018.23131
Egerić M, Smičiklas ID, Mraković AĐ, Jović MD, Šljivić-Ivanović MZ, Sokolović J, Ristić M. Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste. Desalination and Water Treatment. 2018;132:205-214
Egerić Marija, Smičiklas Ivana D., Mraković Ana Đ., Jović Mihajlo D., Šljivić-Ivanović Marija Z., Sokolović Jovica, Ristić Mirjana, "Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste" Desalination and Water Treatment, 132 (2018):205-214,
https://doi.org/10.5004/dwt.2018.23131 .
4
4
4

Unusual temperature dependence of coercivity in ε-Fe2O3 phase

Nikolić, Violeta N.; Tadić, Marin; Mraković, Ana Đ.; Spasojević, Vojislav

(2018)

TY  - CONF
AU  - Nikolić, Violeta N.
AU  - Tadić, Marin
AU  - Mraković, Ana Đ.
AU  - Spasojević, Vojislav
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7850
AB  - Nano iron oxides have been intensively investigated due to their various potential biomedical applications. ε-Fe2O3 phase exerted internal coercivity value up to ~20 kOe, high Curie temperature (Tc= 510 K), and magnetoelectric character. Accordingly, epsilon phase is recognized as a suitable material for medical spintronic biosensors production, that present important part for the lab-on-a-chip systems. Noteworthy, ε-Fe2O3 phase exerts peculiar magnetic behavior. To get better insight into the magnetism of this material, ε-Fe2O3/SiO2 sample was prepared by the combination of the sol-gel synthesis and microemulsion method (Tann=1050 °C, tann= 4h). Afterwards, the sample was exposed to post-annealing treatment at 100 °C and 200 °C. Synthesized material was preliminary examined by XRD and SQUID techniques. Coercivity changes, induced by the post-annealing temperature oscillations, were monitored by hysteretic measurements. Sample annealed at 1050 °C for 4h, showed coercivity ~20 kOe. The same sample performed to the post-annealing treatment at 100 °C, exerted significantly decreased coercivity (~1600 Oe). Further rise of the post-annealing temperature (200 °C) resulted in the increased coercivity ~15 kOe. Obtained study showed that there is insufficient knowledge concerning the ε-Fe2O3 coercivity changes of the polymorph. The more detailed investigation will be conducted, in order to advance the control of the epsilon phase magnetic properties. © 2018 TANGER Ltd. All Rights Reserved.
C3  - NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application
T1  - Unusual temperature dependence of coercivity in ε-Fe2O3 phase
VL  - 2017-October
SP  - 27
EP  - 32
ER  - 
@conference{
author = "Nikolić, Violeta N. and Tadić, Marin and Mraković, Ana Đ. and Spasojević, Vojislav",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7850",
abstract = "Nano iron oxides have been intensively investigated due to their various potential biomedical applications. ε-Fe2O3 phase exerted internal coercivity value up to ~20 kOe, high Curie temperature (Tc= 510 K), and magnetoelectric character. Accordingly, epsilon phase is recognized as a suitable material for medical spintronic biosensors production, that present important part for the lab-on-a-chip systems. Noteworthy, ε-Fe2O3 phase exerts peculiar magnetic behavior. To get better insight into the magnetism of this material, ε-Fe2O3/SiO2 sample was prepared by the combination of the sol-gel synthesis and microemulsion method (Tann=1050 °C, tann= 4h). Afterwards, the sample was exposed to post-annealing treatment at 100 °C and 200 °C. Synthesized material was preliminary examined by XRD and SQUID techniques. Coercivity changes, induced by the post-annealing temperature oscillations, were monitored by hysteretic measurements. Sample annealed at 1050 °C for 4h, showed coercivity ~20 kOe. The same sample performed to the post-annealing treatment at 100 °C, exerted significantly decreased coercivity (~1600 Oe). Further rise of the post-annealing temperature (200 °C) resulted in the increased coercivity ~15 kOe. Obtained study showed that there is insufficient knowledge concerning the ε-Fe2O3 coercivity changes of the polymorph. The more detailed investigation will be conducted, in order to advance the control of the epsilon phase magnetic properties. © 2018 TANGER Ltd. All Rights Reserved.",
journal = "NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application",
title = "Unusual temperature dependence of coercivity in ε-Fe2O3 phase",
volume = "2017-October",
pages = "27-32"
}
Nikolić, V. N., Tadić, M., Mraković, A. Đ.,& Spasojević, V. (2018). Unusual temperature dependence of coercivity in ε-Fe2O3 phase.
NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October, 27-32.
Nikolić VN, Tadić M, Mraković AĐ, Spasojević V. Unusual temperature dependence of coercivity in ε-Fe2O3 phase. NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application. 2018;2017-October:27-32
Nikolić Violeta N., Tadić Marin, Mraković Ana Đ., Spasojević Vojislav, "Unusual temperature dependence of coercivity in ε-Fe2O3 phase" NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October (2018):27-32

Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids

Omelyanchik, Alexander; Knežević, Nikola; Rodionova, Valeria; Salvador, Maria; Peddis, Davide; Varvaro, Gaspare; Laureti, Sara; Mraković, Ana Đ.; Kusigerski, Vladan; Illes, Erzsebet

(IEEE, 2018)

TY  - CONF
AU  - Omelyanchik, Alexander
AU  - Knežević, Nikola
AU  - Rodionova, Valeria
AU  - Salvador, Maria
AU  - Peddis, Davide
AU  - Varvaro, Gaspare
AU  - Laureti, Sara
AU  - Mraković, Ana Đ.
AU  - Kusigerski, Vladan
AU  - Illes, Erzsebet
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8749
AB  - Investigating magnetic properties of nanoparticles dispersed in a fluid is catching an increasing attention for their wide range of applications; however, a careful magnetic characterization requires low temperatures and vacuum conditions which represent a critical issue for a correct sample handling. In this paper, several experimental protocols to investigate low temperature magnetic properties of magnetic nanoparticles dispersed in fluid are described. In particular, by investigating interparticle interaction by remanence techniques at low temperature, some insight about particle aggregation in fluids has been given. © 2018 IEEE.
PB  - IEEE
C3  - 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)
T1  - Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids
SP  - 1
EP  - 5
DO  - 10.1109/NAP.2018.8915059
ER  - 
@conference{
author = "Omelyanchik, Alexander and Knežević, Nikola and Rodionova, Valeria and Salvador, Maria and Peddis, Davide and Varvaro, Gaspare and Laureti, Sara and Mraković, Ana Đ. and Kusigerski, Vladan and Illes, Erzsebet",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8749",
abstract = "Investigating magnetic properties of nanoparticles dispersed in a fluid is catching an increasing attention for their wide range of applications; however, a careful magnetic characterization requires low temperatures and vacuum conditions which represent a critical issue for a correct sample handling. In this paper, several experimental protocols to investigate low temperature magnetic properties of magnetic nanoparticles dispersed in fluid are described. In particular, by investigating interparticle interaction by remanence techniques at low temperature, some insight about particle aggregation in fluids has been given. © 2018 IEEE.",
publisher = "IEEE",
journal = "2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)",
title = "Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids",
pages = "1-5",
doi = "10.1109/NAP.2018.8915059"
}
Omelyanchik, A., Knežević, N., Rodionova, V., Salvador, M., Peddis, D., Varvaro, G., Laureti, S., Mraković, A. Đ., Kusigerski, V.,& Illes, E. (2018). Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids.
2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)
IEEE., 1-5.
https://doi.org/10.1109/NAP.2018.8915059
Omelyanchik A, Knežević N, Rodionova V, Salvador M, Peddis D, Varvaro G, Laureti S, Mraković AĐ, Kusigerski V, Illes E. Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids. 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP). 2018;:1-5
Omelyanchik Alexander, Knežević Nikola, Rodionova Valeria, Salvador Maria, Peddis Davide, Varvaro Gaspare, Laureti Sara, Mraković Ana Đ., Kusigerski Vladan, Illes Erzsebet, "Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids" 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP) (2018):1-5,
https://doi.org/10.1109/NAP.2018.8915059 .
2
2

Smart hydrogels with ethylene glycol propylene glycol pendant chains

Rogić Miladinović, Zorana; Mićić, Maja M.; Mraković, Ana Đ.; Suljovrujić, Edin H.

(2017)

TY  - JOUR
AU  - Rogić Miladinović, Zorana
AU  - Mićić, Maja M.
AU  - Mraković, Ana Đ.
AU  - Suljovrujić, Edin H.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1884
AB  - New hydrogels based on different oligo(alkylene glycol) methacrylate (OAGMA) with inverse thermoresponse and volume phase transition temperature (VPTT) were obtained and characterised in this paper. Synthesis was performed from monomer-solvent (OAGMA-water/ethanol) mixture by simultaneous radiation-induced polymerisation and crosslinking; three different OAGMA (EG(6)MA, EG(6)PG(3)MA, and PG(5)MA) were used. The main focus was made on PEG(6)PG(3)MA hydrogel based on ethylene glycol (EG) propylene glycol (PG) pendant chains with EG (6) and PG (3) block units, since in the case of POPGMA and POEGMA homopolymers (i.e. hydrogels with pure PG and EG pendant chains) the VPTTs were observed far below and far above the human body temperature, respectively. Characterisation of the hydrogels was performed by swelling, UV-Vis, FTIR, SEM, DSC and in vitro biocompatibility (cytocompatibility and haemolytic activity) investigations. Due to the possibility to combine VPTT close to human body temperature with good biocompatibility, new hydrogel based on EGPG block pendant chains showed promising potential for different biomedical applications.
T2  - Journal of Polymer Research
T1  - Smart hydrogels with ethylene glycol propylene glycol pendant chains
VL  - 25
IS  - 1
DO  - 10.1007/s10965-017-1408-z
ER  - 
@article{
author = "Rogić Miladinović, Zorana and Mićić, Maja M. and Mraković, Ana Đ. and Suljovrujić, Edin H.",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1884",
abstract = "New hydrogels based on different oligo(alkylene glycol) methacrylate (OAGMA) with inverse thermoresponse and volume phase transition temperature (VPTT) were obtained and characterised in this paper. Synthesis was performed from monomer-solvent (OAGMA-water/ethanol) mixture by simultaneous radiation-induced polymerisation and crosslinking; three different OAGMA (EG(6)MA, EG(6)PG(3)MA, and PG(5)MA) were used. The main focus was made on PEG(6)PG(3)MA hydrogel based on ethylene glycol (EG) propylene glycol (PG) pendant chains with EG (6) and PG (3) block units, since in the case of POPGMA and POEGMA homopolymers (i.e. hydrogels with pure PG and EG pendant chains) the VPTTs were observed far below and far above the human body temperature, respectively. Characterisation of the hydrogels was performed by swelling, UV-Vis, FTIR, SEM, DSC and in vitro biocompatibility (cytocompatibility and haemolytic activity) investigations. Due to the possibility to combine VPTT close to human body temperature with good biocompatibility, new hydrogel based on EGPG block pendant chains showed promising potential for different biomedical applications.",
journal = "Journal of Polymer Research",
title = "Smart hydrogels with ethylene glycol propylene glycol pendant chains",
volume = "25",
number = "1",
doi = "10.1007/s10965-017-1408-z"
}
Rogić Miladinović, Z., Mićić, M. M., Mraković, A. Đ.,& Suljovrujić, E. H. (2017). Smart hydrogels with ethylene glycol propylene glycol pendant chains.
Journal of Polymer Research, 25(1).
https://doi.org/10.1007/s10965-017-1408-z
Rogić Miladinović Z, Mićić MM, Mraković AĐ, Suljovrujić EH. Smart hydrogels with ethylene glycol propylene glycol pendant chains. Journal of Polymer Research. 2017;25(1)
Rogić Miladinović Zorana, Mićić Maja M., Mraković Ana Đ., Suljovrujić Edin H., "Smart hydrogels with ethylene glycol propylene glycol pendant chains" Journal of Polymer Research, 25, no. 1 (2017),
https://doi.org/10.1007/s10965-017-1408-z .
22
5
7

Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties

Nikolić, Violeta N.; Spasojević, Vojislav; Panjan, Matjaž; Kopanja, Lazar; Mraković, Ana Đ.; Tadić, Marin

(2017)

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Spasojević, Vojislav
AU  - Panjan, Matjaž
AU  - Kopanja, Lazar
AU  - Mraković, Ana Đ.
AU  - Tadić, Marin
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1559
AB  - Several Fe2O3/SiO2 nanostructures were synthesized by the combination of the microemulsion and a sol-gel methods. Based on X-ray powder diffraction (XRD) and magnetic measurements (giant coercivity similar to 2.13 T) we identified epsilon-Fe2O3 (hard magnet) as the dominant crystalline phase. TEM analysis showed a wide size distribution of iron oxide nanoparticles (from 4 to 50 nm) with various morphologies (spherical, ellipsoidal and rod-like). We quantitatively described (computational analysis, MATLAB code) morphological properties of nanoparticles using the ellipticity of the shapes. The as-synthesized hard magnetic material was subjected to a post-annealing treatment at different temperatures (200, 500, 750, 1000 and 1100 degrees C) in order to investigate stability, formation and transformation of the epsilon-Fe2O3 polymorph. We found decreasing coercivity in the thermally treated samples up to the temperature of 750 degrees C (H-c=1245 Oe), followed by an observation of a surprising jump in coercivity H-c similar to 1.5 T after post-annealing at 1000 degrees C. We conclude that the re-formation of the epsilon-Fe2O3 structure during post-annealing at 1000 degrees C is the origin of the observed phenomena. The phase transformation epsilon-Fe2O3 - GT alpha-Fe2O3 and crystallization of amorphous silica in quartz and cristobalite were observed in the sample treated at 1100 degrees C.
T2  - Ceramics International
T1  - Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties
VL  - 43
IS  - 10
SP  - 7497
EP  - 7507
DO  - 10.1016/j.ceramint.2017.03.030
ER  - 
@article{
author = "Nikolić, Violeta N. and Spasojević, Vojislav and Panjan, Matjaž and Kopanja, Lazar and Mraković, Ana Đ. and Tadić, Marin",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1559",
abstract = "Several Fe2O3/SiO2 nanostructures were synthesized by the combination of the microemulsion and a sol-gel methods. Based on X-ray powder diffraction (XRD) and magnetic measurements (giant coercivity similar to 2.13 T) we identified epsilon-Fe2O3 (hard magnet) as the dominant crystalline phase. TEM analysis showed a wide size distribution of iron oxide nanoparticles (from 4 to 50 nm) with various morphologies (spherical, ellipsoidal and rod-like). We quantitatively described (computational analysis, MATLAB code) morphological properties of nanoparticles using the ellipticity of the shapes. The as-synthesized hard magnetic material was subjected to a post-annealing treatment at different temperatures (200, 500, 750, 1000 and 1100 degrees C) in order to investigate stability, formation and transformation of the epsilon-Fe2O3 polymorph. We found decreasing coercivity in the thermally treated samples up to the temperature of 750 degrees C (H-c=1245 Oe), followed by an observation of a surprising jump in coercivity H-c similar to 1.5 T after post-annealing at 1000 degrees C. We conclude that the re-formation of the epsilon-Fe2O3 structure during post-annealing at 1000 degrees C is the origin of the observed phenomena. The phase transformation epsilon-Fe2O3 - GT alpha-Fe2O3 and crystallization of amorphous silica in quartz and cristobalite were observed in the sample treated at 1100 degrees C.",
journal = "Ceramics International",
title = "Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties",
volume = "43",
number = "10",
pages = "7497-7507",
doi = "10.1016/j.ceramint.2017.03.030"
}
Nikolić, V. N., Spasojević, V., Panjan, M., Kopanja, L., Mraković, A. Đ.,& Tadić, M. (2017). Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties.
Ceramics International, 43(10), 7497-7507.
https://doi.org/10.1016/j.ceramint.2017.03.030
Nikolić VN, Spasojević V, Panjan M, Kopanja L, Mraković AĐ, Tadić M. Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties. Ceramics International. 2017;43(10):7497-7507
Nikolić Violeta N., Spasojević Vojislav, Panjan Matjaž, Kopanja Lazar, Mraković Ana Đ., Tadić Marin, "Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties" Ceramics International, 43, no. 10 (2017):7497-7507,
https://doi.org/10.1016/j.ceramint.2017.03.030 .
29
23
26

Optical properties of titanium oxide films obtained by cathodic arc plasma deposition

Jokanović, Vukoman R.; Čolović, Božana M.; Trajkovska Petkoska, Anka; Mraković, Ana Đ.; Jokanovic, Bojan; Nenadović, Miloš; Ferrara, Manuela; Nasov, Ilija

(2017)

TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Čolović, Božana M.
AU  - Trajkovska Petkoska, Anka
AU  - Mraković, Ana Đ.
AU  - Jokanovic, Bojan
AU  - Nenadović, Miloš
AU  - Ferrara, Manuela
AU  - Nasov, Ilija
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1871
AB  - Structural and optical properties of nanometric titanium oxide (TixOy) films obtained by cathodic arc plasma deposition were investigated. Phase analysis by x-ray diffraction and Fourier-transform infrared spectroscopy showed the presence of anatase, rutile, Ti2O3, Ti4O7 and amorphous phases. Scanning electron microscopy images showed well-developed surface morphology with nano-patterns. Spectroscopic ellipsometry revealed film thicknesses of 53 and 50 nm, variable refractive indices dependent on the light wavelength and close to zero extinction coefficients for wavelengths higher than 500 nm. On the basis of ultraviolet-visible spectroscopy data and using the Tauc equation, band gap values for direct and indirect electron transitions were determined.
T2  - Plasma Science and Technology
T1  - Optical properties of titanium oxide films obtained by cathodic arc plasma deposition
VL  - 19
IS  - 12
DO  - 10.1088/2058-6272/aa8806
ER  - 
@article{
author = "Jokanović, Vukoman R. and Čolović, Božana M. and Trajkovska Petkoska, Anka and Mraković, Ana Đ. and Jokanovic, Bojan and Nenadović, Miloš and Ferrara, Manuela and Nasov, Ilija",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1871",
abstract = "Structural and optical properties of nanometric titanium oxide (TixOy) films obtained by cathodic arc plasma deposition were investigated. Phase analysis by x-ray diffraction and Fourier-transform infrared spectroscopy showed the presence of anatase, rutile, Ti2O3, Ti4O7 and amorphous phases. Scanning electron microscopy images showed well-developed surface morphology with nano-patterns. Spectroscopic ellipsometry revealed film thicknesses of 53 and 50 nm, variable refractive indices dependent on the light wavelength and close to zero extinction coefficients for wavelengths higher than 500 nm. On the basis of ultraviolet-visible spectroscopy data and using the Tauc equation, band gap values for direct and indirect electron transitions were determined.",
journal = "Plasma Science and Technology",
title = "Optical properties of titanium oxide films obtained by cathodic arc plasma deposition",
volume = "19",
number = "12",
doi = "10.1088/2058-6272/aa8806"
}
Jokanović, V. R., Čolović, B. M., Trajkovska Petkoska, A., Mraković, A. Đ., Jokanovic, B., Nenadović, M., Ferrara, M.,& Nasov, I. (2017). Optical properties of titanium oxide films obtained by cathodic arc plasma deposition.
Plasma Science and Technology, 19(12).
https://doi.org/10.1088/2058-6272/aa8806
Jokanović VR, Čolović BM, Trajkovska Petkoska A, Mraković AĐ, Jokanovic B, Nenadović M, Ferrara M, Nasov I. Optical properties of titanium oxide films obtained by cathodic arc plasma deposition. Plasma Science and Technology. 2017;19(12)
Jokanović Vukoman R., Čolović Božana M., Trajkovska Petkoska Anka, Mraković Ana Đ., Jokanovic Bojan, Nenadović Miloš, Ferrara Manuela, Nasov Ilija, "Optical properties of titanium oxide films obtained by cathodic arc plasma deposition" Plasma Science and Technology, 19, no. 12 (2017),
https://doi.org/10.1088/2058-6272/aa8806 .
3
3
3

A facile route for hydroxyapatite densification with an increased heating rate

Lukic, Miodrag J.; Sezen, Meltem; Veljović, Đorđe N.; Mraković, Ana Đ.

(2017)

TY  - JOUR
AU  - Lukic, Miodrag J.
AU  - Sezen, Meltem
AU  - Veljović, Đorđe N.
AU  - Mraković, Ana Đ.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1682
AB  - The densification behavior of hydroxyapatite nanorods prepared by chemical precipitation method in open reactor conditions was investigated by application of different heating rates. The non-isothermal processing was performed with 2, 10, and 50 degrees C/min up to 1200 degrees C and yielded fully dense ceramics. The implementation of the higher heating rate provided grain size refinement from micrometer level for the slowest ramp, down to 250 nm in the case of processing with 50 degrees C/min, without any drawbacks regarding final density. The relative amount of retained structural hydroxyl groups in sintered ceramics was gradually increased with the heating rate. Furthermore, the qualitative level of optical translucency was increased with a higher heating rate which can be explained by the beneficial alignment of HAp nanorods during the fast heating rate processing, achieved microstructural refinement, and higher amount of structural hydroxyl groups. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - A facile route for hydroxyapatite densification with an increased heating rate
VL  - 207
SP  - 12
EP  - 15
DO  - 10.1016/j.matlet.2017.07.020
ER  - 
@article{
author = "Lukic, Miodrag J. and Sezen, Meltem and Veljović, Đorđe N. and Mraković, Ana Đ.",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1682",
abstract = "The densification behavior of hydroxyapatite nanorods prepared by chemical precipitation method in open reactor conditions was investigated by application of different heating rates. The non-isothermal processing was performed with 2, 10, and 50 degrees C/min up to 1200 degrees C and yielded fully dense ceramics. The implementation of the higher heating rate provided grain size refinement from micrometer level for the slowest ramp, down to 250 nm in the case of processing with 50 degrees C/min, without any drawbacks regarding final density. The relative amount of retained structural hydroxyl groups in sintered ceramics was gradually increased with the heating rate. Furthermore, the qualitative level of optical translucency was increased with a higher heating rate which can be explained by the beneficial alignment of HAp nanorods during the fast heating rate processing, achieved microstructural refinement, and higher amount of structural hydroxyl groups. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "A facile route for hydroxyapatite densification with an increased heating rate",
volume = "207",
pages = "12-15",
doi = "10.1016/j.matlet.2017.07.020"
}
Lukic, M. J., Sezen, M., Veljović, Đ. N.,& Mraković, A. Đ. (2017). A facile route for hydroxyapatite densification with an increased heating rate.
Materials Letters, 207, 12-15.
https://doi.org/10.1016/j.matlet.2017.07.020
Lukic MJ, Sezen M, Veljović ĐN, Mraković AĐ. A facile route for hydroxyapatite densification with an increased heating rate. Materials Letters. 2017;207:12-15
Lukic Miodrag J., Sezen Meltem, Veljović Đorđe N., Mraković Ana Đ., "A facile route for hydroxyapatite densification with an increased heating rate" Materials Letters, 207 (2017):12-15,
https://doi.org/10.1016/j.matlet.2017.07.020 .

Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures

Knežević, Nikola; Jimenez, Chiara Mauriello; Albino, Martin; Vukadinović, Aleksandar; Mraković, Ana Đ.; Illés, Erzsébet; Janaćković, Đorđe T.; Durand, Jean-Olivier; Sangregorio, Claudio; Peddis, Davide

(2017)

TY  - JOUR
AU  - Knežević, Nikola
AU  - Jimenez, Chiara Mauriello
AU  - Albino, Martin
AU  - Vukadinović, Aleksandar
AU  - Mraković, Ana Đ.
AU  - Illés, Erzsébet
AU  - Janaćković, Đorđe T.
AU  - Durand, Jean-Olivier
AU  - Sangregorio, Claudio
AU  - Peddis, Davide
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1775
AB  - Initial results en route toward construction of complex magnetic core-shell silica and organosilica nanotheranostics are presented. Magnetite nanoparticles are synthesized by three different methods and embedded within mesoporous silica and organosilica frameworks by different surfactant-templated procedures to produce three types of core-shell nanoparticles. Magnetite nanoparticles (15 nm in diameter) are embedded within mesoporous silica nanoparticles to produce cell-like material with predominantly one magnetite nuclei-resembling core per nanoparticle, with final particle diameter of ca. 150 nm, specific surface area of 573 m(2)/g and hexagonally structured tubular pores (2.6 nm predominant diameter), extended throughout the volume of nanoparticles. Two forms of spherical core-shell nanoparticles composed of magnetite cores embedded within mesoporous organosilica shells are also obtained by employing ethylene and ethane bridged organobisalkoxysilane precursors. The obtained nanomaterials are characterized by high surface area (978 and 820 m(2)/g), tubular pore morphology (2 and 2.8 nm predominant pore diameters), different diameters (386 and 100-200 nm), in case of ethylene- and ethane-composed organosilica shells, respectively. Different degree of agglomeration of magnetite nanoparticles was also observed in the obtained materials, and in the case of utilization of surfactant-pre-stabilized magnetite nanoparticles for the syntheses, their uniform and non-agglomerated distribution within the shells was noted.
T2  - MRS Advances
T1  - Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures
VL  - 2
IS  - 19-20
SP  - 1037
EP  - 1045
DO  - 10.1557/adv.2017.69
ER  - 
@article{
author = "Knežević, Nikola and Jimenez, Chiara Mauriello and Albino, Martin and Vukadinović, Aleksandar and Mraković, Ana Đ. and Illés, Erzsébet and Janaćković, Đorđe T. and Durand, Jean-Olivier and Sangregorio, Claudio and Peddis, Davide",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1775",
abstract = "Initial results en route toward construction of complex magnetic core-shell silica and organosilica nanotheranostics are presented. Magnetite nanoparticles are synthesized by three different methods and embedded within mesoporous silica and organosilica frameworks by different surfactant-templated procedures to produce three types of core-shell nanoparticles. Magnetite nanoparticles (15 nm in diameter) are embedded within mesoporous silica nanoparticles to produce cell-like material with predominantly one magnetite nuclei-resembling core per nanoparticle, with final particle diameter of ca. 150 nm, specific surface area of 573 m(2)/g and hexagonally structured tubular pores (2.6 nm predominant diameter), extended throughout the volume of nanoparticles. Two forms of spherical core-shell nanoparticles composed of magnetite cores embedded within mesoporous organosilica shells are also obtained by employing ethylene and ethane bridged organobisalkoxysilane precursors. The obtained nanomaterials are characterized by high surface area (978 and 820 m(2)/g), tubular pore morphology (2 and 2.8 nm predominant pore diameters), different diameters (386 and 100-200 nm), in case of ethylene- and ethane-composed organosilica shells, respectively. Different degree of agglomeration of magnetite nanoparticles was also observed in the obtained materials, and in the case of utilization of surfactant-pre-stabilized magnetite nanoparticles for the syntheses, their uniform and non-agglomerated distribution within the shells was noted.",
journal = "MRS Advances",
title = "Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures",
volume = "2",
number = "19-20",
pages = "1037-1045",
doi = "10.1557/adv.2017.69"
}
Knežević, N., Jimenez, C. M., Albino, M., Vukadinović, A., Mraković, A. Đ., Illés, E., Janaćković, Đ. T., Durand, J., Sangregorio, C.,& Peddis, D. (2017). Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures.
MRS Advances, 2(19-20), 1037-1045.
https://doi.org/10.1557/adv.2017.69
Knežević N, Jimenez CM, Albino M, Vukadinović A, Mraković AĐ, Illés E, Janaćković ĐT, Durand J, Sangregorio C, Peddis D. Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures. MRS Advances. 2017;2(19-20):1037-1045
Knežević Nikola, Jimenez Chiara Mauriello, Albino Martin, Vukadinović Aleksandar, Mraković Ana Đ., Illés Erzsébet, Janaćković Đorđe T., Durand Jean-Olivier, Sangregorio Claudio, Peddis Davide, "Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures" MRS Advances, 2, no. 19-20 (2017):1037-1045,
https://doi.org/10.1557/adv.2017.69 .
1
18
16
15

Ni(Ii) Immobilization By Bio-Apatite Materials: Appraisal of Chemical, Thermal and Combined Treatments

Šljivić-Ivanović, Marija Z.; Milenkovic, Aleksandra; Jović, Mihajlo D.; Dimović, Slavko; Mraković, Ana Đ.; Smičiklas, Ivana D.

(2016)

TY  - JOUR
AU  - Šljivić-Ivanović, Marija Z.
AU  - Milenkovic, Aleksandra
AU  - Jović, Mihajlo D.
AU  - Dimović, Slavko
AU  - Mraković, Ana Đ.
AU  - Smičiklas, Ivana D.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1021
AB  - Animal bones are a natural and rich source of calcium hydroxyapatite (HAP), which has been found to be a good sorbent material for heavy metals and radionuclides. Various treatments can reduce the content of bone organic phase and improve sorption properties. In this study, sorption capacities of raw bovine bones (B) and samples obtained by chemical treatment with NaOH (B-NaOH), by heating at 400 degrees C (B-400) and by combined chemical and thermal treatment (BNaOH+400), were compared, using Ni(II) ions as sorbates. Maximum sorption capacities increased in the order B LT B-NaOH LT B-400 LT BNaOH+400. Based on different sorption data and FT-IR analyses, the mechanism of Ni(II) sorption was found to be complex, with participation of both HAP and organic phase (when present). Sequential extraction analysis was applied for testing the stability of Ni(II) ions sorbed by BNaOH+400. Majority of Ni(II) was found in residual phase (65%) at lower level of sorbent loading, while with the increase of sorbent saturation carbonate fraction became dominant (39%). According to the results, BNaOH+400 can be utilized in water purification systems. As an apatite based material with low organic content and high efficiency for Ni(II) sorption, it is also a good candidate for in situ soil remediation, particularly at lower contamination levels.
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Ni(Ii) Immobilization By Bio-Apatite Materials: Appraisal of Chemical, Thermal and Combined Treatments
VL  - 22
IS  - 1
SP  - 117
EP  - 126
DO  - 10.2298/CICEQ150323024S
ER  - 
@article{
author = "Šljivić-Ivanović, Marija Z. and Milenkovic, Aleksandra and Jović, Mihajlo D. and Dimović, Slavko and Mraković, Ana Đ. and Smičiklas, Ivana D.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1021",
abstract = "Animal bones are a natural and rich source of calcium hydroxyapatite (HAP), which has been found to be a good sorbent material for heavy metals and radionuclides. Various treatments can reduce the content of bone organic phase and improve sorption properties. In this study, sorption capacities of raw bovine bones (B) and samples obtained by chemical treatment with NaOH (B-NaOH), by heating at 400 degrees C (B-400) and by combined chemical and thermal treatment (BNaOH+400), were compared, using Ni(II) ions as sorbates. Maximum sorption capacities increased in the order B LT B-NaOH LT B-400 LT BNaOH+400. Based on different sorption data and FT-IR analyses, the mechanism of Ni(II) sorption was found to be complex, with participation of both HAP and organic phase (when present). Sequential extraction analysis was applied for testing the stability of Ni(II) ions sorbed by BNaOH+400. Majority of Ni(II) was found in residual phase (65%) at lower level of sorbent loading, while with the increase of sorbent saturation carbonate fraction became dominant (39%). According to the results, BNaOH+400 can be utilized in water purification systems. As an apatite based material with low organic content and high efficiency for Ni(II) sorption, it is also a good candidate for in situ soil remediation, particularly at lower contamination levels.",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Ni(Ii) Immobilization By Bio-Apatite Materials: Appraisal of Chemical, Thermal and Combined Treatments",
volume = "22",
number = "1",
pages = "117-126",
doi = "10.2298/CICEQ150323024S"
}
Šljivić-Ivanović, M. Z., Milenkovic, A., Jović, M. D., Dimović, S., Mraković, A. Đ.,& Smičiklas, I. D. (2016). Ni(Ii) Immobilization By Bio-Apatite Materials: Appraisal of Chemical, Thermal and Combined Treatments.
Chemical Industry and Chemical Engineering Quarterly / CICEQ, 22(1), 117-126.
https://doi.org/10.2298/CICEQ150323024S
Šljivić-Ivanović MZ, Milenkovic A, Jović MD, Dimović S, Mraković AĐ, Smičiklas ID. Ni(Ii) Immobilization By Bio-Apatite Materials: Appraisal of Chemical, Thermal and Combined Treatments. Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2016;22(1):117-126
Šljivić-Ivanović Marija Z., Milenkovic Aleksandra, Jović Mihajlo D., Dimović Slavko, Mraković Ana Đ., Smičiklas Ivana D., "Ni(Ii) Immobilization By Bio-Apatite Materials: Appraisal of Chemical, Thermal and Combined Treatments" Chemical Industry and Chemical Engineering Quarterly / CICEQ, 22, no. 1 (2016):117-126,
https://doi.org/10.2298/CICEQ150323024S .
3
3
2

Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods

Momić, Tatjana; Lazarević-Pašti, Tamara; Bogdanović, Una; Vodnik, Vesna; Mraković, Ana Đ.; Rakočević, Zlatko Lj.; Pavlović, Vladimir B.; Vasić, Vesna M.

(2016)

TY  - JOUR
AU  - Momić, Tatjana
AU  - Lazarević-Pašti, Tamara
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Mraković, Ana Đ.
AU  - Rakočević, Zlatko Lj.
AU  - Pavlović, Vladimir B.
AU  - Vasić, Vesna M.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1347
AB  - Organophosphorus pesticide dimethoate was adsorbed onto gold nanospheres and nanorods in aqueous solution using batch technique. Adsorption of dimethoate onto gold nanoparticles was confirmed by UV-Vis spectrophotometry, TEM, AFM, and FTIR analysis. The adsorption of nanospheres resulted in aggregation which was not the case with nanorods. Nanoparticles adsorption features were characterized using Langmuir and Freundlich isotherm models. The Langmuir adsorption isotherm was found to have the best fit to the experimental data for both types of nanoparticles. Adsorption capacity detected for nanospheres is 456 mg/g and for nanorods is 57.1 mg/g. Also, nanoparticles were successfully used for dimethoate removal from spiked drinking water while nanospheres were shown to be more efficient than nanorods.
T2  - Journal of Nanomaterials
T1  - Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods
DO  - 10.1155/2016/8910271
ER  - 
@article{
author = "Momić, Tatjana and Lazarević-Pašti, Tamara and Bogdanović, Una and Vodnik, Vesna and Mraković, Ana Đ. and Rakočević, Zlatko Lj. and Pavlović, Vladimir B. and Vasić, Vesna M.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1347",
abstract = "Organophosphorus pesticide dimethoate was adsorbed onto gold nanospheres and nanorods in aqueous solution using batch technique. Adsorption of dimethoate onto gold nanoparticles was confirmed by UV-Vis spectrophotometry, TEM, AFM, and FTIR analysis. The adsorption of nanospheres resulted in aggregation which was not the case with nanorods. Nanoparticles adsorption features were characterized using Langmuir and Freundlich isotherm models. The Langmuir adsorption isotherm was found to have the best fit to the experimental data for both types of nanoparticles. Adsorption capacity detected for nanospheres is 456 mg/g and for nanorods is 57.1 mg/g. Also, nanoparticles were successfully used for dimethoate removal from spiked drinking water while nanospheres were shown to be more efficient than nanorods.",
journal = "Journal of Nanomaterials",
title = "Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods",
doi = "10.1155/2016/8910271"
}
Momić, T., Lazarević-Pašti, T., Bogdanović, U., Vodnik, V., Mraković, A. Đ., Rakočević, Z. Lj., Pavlović, V. B.,& Vasić, V. M. (2016). Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods.
Journal of Nanomaterials.
https://doi.org/10.1155/2016/8910271
Momić T, Lazarević-Pašti T, Bogdanović U, Vodnik V, Mraković AĐ, Rakočević ZL, Pavlović VB, Vasić VM. Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods. Journal of Nanomaterials. 2016;
Momić Tatjana, Lazarević-Pašti Tamara, Bogdanović Una, Vodnik Vesna, Mraković Ana Đ., Rakočević Zlatko Lj., Pavlović Vladimir B., Vasić Vesna M., "Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods" Journal of Nanomaterials (2016),
https://doi.org/10.1155/2016/8910271 .
23
12
14

Catalytic activity of titania polymorphs towards desorption reaction of MgH2

Vujasin, Radojka; Mraković, Ana Đ.; Kurko, Sandra V.; Novaković, Nikola; Matović, Ljiljana; Grbović-Novaković, Jasmina; Milošević, Sanja S.

(2016)

TY  - JOUR
AU  - Vujasin, Radojka
AU  - Mraković, Ana Đ.
AU  - Kurko, Sandra V.
AU  - Novaković, Nikola
AU  - Matović, Ljiljana
AU  - Grbović-Novaković, Jasmina
AU  - Milošević, Sanja S.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/978
AB  - Hydrogen desorption properties of MgH2 ball milled with two different TiO2 polymorphs, rutile and anatase, were studied. Structural characterization has been done by X-ray diffraction (XRD) analysis, particle size analysis (PSD) and scanning electron microscopy (SEM). The mechanism of desorption and the apparent activation energy for desorption were investigated by applying isoconversional kinetic analysis of DTA spectra, while desorbed species were followed by TPD coupled with mass spectroscopy. It has been demonstrate that the addition of rutile TiO2 significantly decrease the apparent activation energy for desorption (E-des(a)), while addition of anatase titania has negligible influence on E-des(a). Such behaviour could be explained in terms of the same crystal structure of rutile TiO2 and MgH2. Further, the mechanism of desorption changes from Avrami-Erofeev n = 3 for pure MgH2 to Avrami Erofeev n = 4 for composite materials. Copyright (c) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Catalytic activity of titania polymorphs towards desorption reaction of MgH2
VL  - 41
IS  - 8
SP  - 4703
EP  - 4711
DO  - 10.1016/j.ijhydene.2016.01.095
ER  - 
@article{
author = "Vujasin, Radojka and Mraković, Ana Đ. and Kurko, Sandra V. and Novaković, Nikola and Matović, Ljiljana and Grbović-Novaković, Jasmina and Milošević, Sanja S.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/978",
abstract = "Hydrogen desorption properties of MgH2 ball milled with two different TiO2 polymorphs, rutile and anatase, were studied. Structural characterization has been done by X-ray diffraction (XRD) analysis, particle size analysis (PSD) and scanning electron microscopy (SEM). The mechanism of desorption and the apparent activation energy for desorption were investigated by applying isoconversional kinetic analysis of DTA spectra, while desorbed species were followed by TPD coupled with mass spectroscopy. It has been demonstrate that the addition of rutile TiO2 significantly decrease the apparent activation energy for desorption (E-des(a)), while addition of anatase titania has negligible influence on E-des(a). Such behaviour could be explained in terms of the same crystal structure of rutile TiO2 and MgH2. Further, the mechanism of desorption changes from Avrami-Erofeev n = 3 for pure MgH2 to Avrami Erofeev n = 4 for composite materials. Copyright (c) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Catalytic activity of titania polymorphs towards desorption reaction of MgH2",
volume = "41",
number = "8",
pages = "4703-4711",
doi = "10.1016/j.ijhydene.2016.01.095"
}
Vujasin, R., Mraković, A. Đ., Kurko, S. V., Novaković, N., Matović, L., Grbović-Novaković, J.,& Milošević, S. S. (2016). Catalytic activity of titania polymorphs towards desorption reaction of MgH2.
International Journal of Hydrogen Energy, 41(8), 4703-4711.
https://doi.org/10.1016/j.ijhydene.2016.01.095
Vujasin R, Mraković AĐ, Kurko SV, Novaković N, Matović L, Grbović-Novaković J, Milošević SS. Catalytic activity of titania polymorphs towards desorption reaction of MgH2. International Journal of Hydrogen Energy. 2016;41(8):4703-4711
Vujasin Radojka, Mraković Ana Đ., Kurko Sandra V., Novaković Nikola, Matović Ljiljana, Grbović-Novaković Jasmina, Milošević Sanja S., "Catalytic activity of titania polymorphs towards desorption reaction of MgH2" International Journal of Hydrogen Energy, 41, no. 8 (2016):4703-4711,
https://doi.org/10.1016/j.ijhydene.2016.01.095 .
8
8
8

Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system

Nikolić, Violeta N.; Perović, Marija M.; Kusigerski, Vladan; Bošković, Marko; Mraković, Ana Đ.; Blanuša, Jovan; Spasojević, Vojislav

(2015)

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Bošković, Marko
AU  - Mraković, Ana Đ.
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/561
AB  - Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the investigated interacting nanoparticle system.
T2  - Journal of Nanoparticle Research
T1  - Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system
VL  - 17
IS  - 3
DO  - 10.1007/s11051-015-2952-2
ER  - 
@article{
author = "Nikolić, Violeta N. and Perović, Marija M. and Kusigerski, Vladan and Bošković, Marko and Mraković, Ana Đ. and Blanuša, Jovan and Spasojević, Vojislav",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/561",
abstract = "Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the investigated interacting nanoparticle system.",
journal = "Journal of Nanoparticle Research",
title = "Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system",
volume = "17",
number = "3",
doi = "10.1007/s11051-015-2952-2"
}
Nikolić, V. N., Perović, M. M., Kusigerski, V., Bošković, M., Mraković, A. Đ., Blanuša, J.,& Spasojević, V. (2015). Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system.
Journal of Nanoparticle Research, 17(3).
https://doi.org/10.1007/s11051-015-2952-2
Nikolić VN, Perović MM, Kusigerski V, Bošković M, Mraković AĐ, Blanuša J, Spasojević V. Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system. Journal of Nanoparticle Research. 2015;17(3)
Nikolić Violeta N., Perović Marija M., Kusigerski Vladan, Bošković Marko, Mraković Ana Đ., Blanuša Jovan, Spasojević Vojislav, "Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system" Journal of Nanoparticle Research, 17, no. 3 (2015),
https://doi.org/10.1007/s11051-015-2952-2 .
3
3
3

The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate

Perović, Marija M.; Kusigerski, Vladan; Mraković, Ana Đ.; Spasojević, Vojislav; Blanuša, Jovan; Nikolić, Violeta N.; Schneeweiss, O.; David, B.; Pizurova, N.

(2015)

TY  - JOUR
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Mraković, Ana Đ.
AU  - Spasojević, Vojislav
AU  - Blanuša, Jovan
AU  - Nikolić, Violeta N.
AU  - Schneeweiss, O.
AU  - David, B.
AU  - Pizurova, N.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/429
AB  - Nanorod ferrous oxalate dihydrate (FeC2O4 x 2H(2)O) which had been synthesized by the microemulsion method, was used as a precursor in the thermal decomposition process performed in air atmosphere. The formation of nanocrystalline hematite as the final product was preceded by the appearence of an intermediate product. Comprehensive study comprising several complementary techniques (x-ray diffraction, transmission electron microscopy, selected area electron diffraction, thermogravimetric/differential thermal analyses and SQUID magnetometry) confirmed that the intermediate product corresponds to the poorly crystalline Fe2O3. Due to the specific nanorod shape and poorly crystalline structure, the investigated Fe2O3 showed high coercive field value of similar to 0.5 T at 5 K. Special attention in this study was devoted to the peculiar magnetic properties of poorly crystalline Fe2O3, which were thoroughly investigated by employing sophisticated experimental procedures such as relaxation of thermoremanent magnetization for different cooling fields, zero field and field cooled memory effects as well as aging experiments for different waiting times. At low temperatures and weak applied magnetic fields, the investigated system behaves similarly to spin glasses, manifesting slow, collective relaxation dynamics of magnetic moments through memory, rejuvenation and aging effects.
T2  - Nanotechnology
T1  - The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate
VL  - 26
IS  - 11
DO  - 10.1088/0957-4484/26/11/115705
ER  - 
@article{
author = "Perović, Marija M. and Kusigerski, Vladan and Mraković, Ana Đ. and Spasojević, Vojislav and Blanuša, Jovan and Nikolić, Violeta N. and Schneeweiss, O. and David, B. and Pizurova, N.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/429",
abstract = "Nanorod ferrous oxalate dihydrate (FeC2O4 x 2H(2)O) which had been synthesized by the microemulsion method, was used as a precursor in the thermal decomposition process performed in air atmosphere. The formation of nanocrystalline hematite as the final product was preceded by the appearence of an intermediate product. Comprehensive study comprising several complementary techniques (x-ray diffraction, transmission electron microscopy, selected area electron diffraction, thermogravimetric/differential thermal analyses and SQUID magnetometry) confirmed that the intermediate product corresponds to the poorly crystalline Fe2O3. Due to the specific nanorod shape and poorly crystalline structure, the investigated Fe2O3 showed high coercive field value of similar to 0.5 T at 5 K. Special attention in this study was devoted to the peculiar magnetic properties of poorly crystalline Fe2O3, which were thoroughly investigated by employing sophisticated experimental procedures such as relaxation of thermoremanent magnetization for different cooling fields, zero field and field cooled memory effects as well as aging experiments for different waiting times. At low temperatures and weak applied magnetic fields, the investigated system behaves similarly to spin glasses, manifesting slow, collective relaxation dynamics of magnetic moments through memory, rejuvenation and aging effects.",
journal = "Nanotechnology",
title = "The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate",
volume = "26",
number = "11",
doi = "10.1088/0957-4484/26/11/115705"
}
Perović, M. M., Kusigerski, V., Mraković, A. Đ., Spasojević, V., Blanuša, J., Nikolić, V. N., Schneeweiss, O., David, B.,& Pizurova, N. (2015). The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate.
Nanotechnology, 26(11).
https://doi.org/10.1088/0957-4484/26/11/115705
Perović MM, Kusigerski V, Mraković AĐ, Spasojević V, Blanuša J, Nikolić VN, Schneeweiss O, David B, Pizurova N. The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate. Nanotechnology. 2015;26(11)
Perović Marija M., Kusigerski Vladan, Mraković Ana Đ., Spasojević Vojislav, Blanuša Jovan, Nikolić Violeta N., Schneeweiss O., David B., Pizurova N., "The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate" Nanotechnology, 26, no. 11 (2015),
https://doi.org/10.1088/0957-4484/26/11/115705 .
5
4
4

Synthesis of LiFePO4 by mechanical stressing and thermal annealing

Milović, Miloš; Jugović, Dragana; Mitrić, Miodrag; Cvjetićanin, Nikola; Mraković, Ana Đ.; Senna, Mamoru; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2014)

TY  - CONF
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Mraković, Ana Đ.
AU  - Senna, Mamoru
AU  - Uskoković, Dragan
PY  - 2014
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/850
UR  - http://dais.sanu.ac.rs/123456789/582
UR  - http://www.itn.sanu.ac.rs/opus4/files/850/Milovic_YUCOMAT2014.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7485
AB  - Mechanical activation can be regarded as a multi-step process with changes in the energetic parameters and the amount of accumulated energy of solids in each step. Here we report the influence of mechanochemical processing on the synthesis of LiFePO4 powders. The different precursor powders were milled in a planetary mill by using WC vials and 5 mm balls made of the same material. A slightly reductive atmosphere (Ar + 5%H2) was used in both mechanical stressing and thermal annealing so as to prevent the oxidation of iron. All synthesis steps were followed by an X-ray diffractometry and FT-IR spectroscopy. The results were compared with previous findings of precipitated and annealed powder, without mechanochemical treatment.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
T1  - Synthesis of LiFePO4 by mechanical stressing and thermal annealing
SP  - 62
EP  - 62
ER  - 
@conference{
author = "Milović, Miloš and Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Mraković, Ana Đ. and Senna, Mamoru and Uskoković, Dragan",
year = "2014",
url = "http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/850, http://dais.sanu.ac.rs/123456789/582, http://www.itn.sanu.ac.rs/opus4/files/850/Milovic_YUCOMAT2014.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7485",
abstract = "Mechanical activation can be regarded as a multi-step process with changes in the energetic parameters and the amount of accumulated energy of solids in each step. Here we report the influence of mechanochemical processing on the synthesis of LiFePO4 powders. The different precursor powders were milled in a planetary mill by using WC vials and 5 mm balls made of the same material. A slightly reductive atmosphere (Ar + 5%H2) was used in both mechanical stressing and thermal annealing so as to prevent the oxidation of iron. All synthesis steps were followed by an X-ray diffractometry and FT-IR spectroscopy. The results were compared with previous findings of precipitated and annealed powder, without mechanochemical treatment.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts",
title = "Synthesis of LiFePO4 by mechanical stressing and thermal annealing",
pages = "62-62"
}
Milović, M., Jugović, D., Mitrić, M., Cvjetićanin, N., Mraković, A. Đ., Senna, M.,& Uskoković, D. (2014). Synthesis of LiFePO4 by mechanical stressing and thermal annealing.
The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 62-62.
Milović M, Jugović D, Mitrić M, Cvjetićanin N, Mraković AĐ, Senna M, Uskoković D. Synthesis of LiFePO4 by mechanical stressing and thermal annealing. The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts. 2014;:62-62
Milović Miloš, Jugović Dragana, Mitrić Miodrag, Cvjetićanin Nikola, Mraković Ana Đ., Senna Mamoru, Uskoković Dragan, "Synthesis of LiFePO4 by mechanical stressing and thermal annealing" The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts (2014):62-62

Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method

Gebrel, Z.; Blanuša, Jovan; Kusigerski, Vladan; Spasojević, Vojislav; Mraković, Ana Đ.; Perović, Marija M.; Alqat, A.

(2014)

TY  - JOUR
AU  - Gebrel, Z.
AU  - Blanuša, Jovan
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
AU  - Mraković, Ana Đ.
AU  - Perović, Marija M.
AU  - Alqat, A.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5714
AB  - The single-phase polycrystalline samples of Y-2(Cu1-xMgx)(2)O-5, x = 0.0, 0.05, 0.15 were successfully synthesized by a modified self-propagating high temperature synthesis. Effects of Mg+2 substitution for Cu+2 in metamagnetic Y2Cu2O5 on its crystal structure and magnetic properties have been analyzed by X-ray diffraction and magnetic measurements performed within 2-300 K range. Mg doping was found to introduce small distortions in the main intradimmer superexchange paths so that ferromagnetic correlations decrease with Mg concentration. More significant impact of Cu substitution was found on the low temperature magnetism due to the breaking of infinite Cu-O chains. The formation of finite size chains introduces low temperature paramagnetic contribution and reduction in Neel temperature. Overall results give a strong indication that the antiferromagnetic ordering as well as metamagnetism persists up to the 15% of the Mg concentration. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method
VL  - 582
SP  - 186
EP  - 189
DO  - 10.1016/j.jallcom.2013.08.033
ER  - 
@article{
author = "Gebrel, Z. and Blanuša, Jovan and Kusigerski, Vladan and Spasojević, Vojislav and Mraković, Ana Đ. and Perović, Marija M. and Alqat, A.",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5714",
abstract = "The single-phase polycrystalline samples of Y-2(Cu1-xMgx)(2)O-5, x = 0.0, 0.05, 0.15 were successfully synthesized by a modified self-propagating high temperature synthesis. Effects of Mg+2 substitution for Cu+2 in metamagnetic Y2Cu2O5 on its crystal structure and magnetic properties have been analyzed by X-ray diffraction and magnetic measurements performed within 2-300 K range. Mg doping was found to introduce small distortions in the main intradimmer superexchange paths so that ferromagnetic correlations decrease with Mg concentration. More significant impact of Cu substitution was found on the low temperature magnetism due to the breaking of infinite Cu-O chains. The formation of finite size chains introduces low temperature paramagnetic contribution and reduction in Neel temperature. Overall results give a strong indication that the antiferromagnetic ordering as well as metamagnetism persists up to the 15% of the Mg concentration. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method",
volume = "582",
pages = "186-189",
doi = "10.1016/j.jallcom.2013.08.033"
}
Gebrel, Z., Blanuša, J., Kusigerski, V., Spasojević, V., Mraković, A. Đ., Perović, M. M.,& Alqat, A. (2014). Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method.
Journal of Alloys and Compounds, 582, 186-189.
https://doi.org/10.1016/j.jallcom.2013.08.033
Gebrel Z, Blanuša J, Kusigerski V, Spasojević V, Mraković AĐ, Perović MM, Alqat A. Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method. Journal of Alloys and Compounds. 2014;582:186-189
Gebrel Z., Blanuša Jovan, Kusigerski Vladan, Spasojević Vojislav, Mraković Ana Đ., Perović Marija M., Alqat A., "Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method" Journal of Alloys and Compounds, 582 (2014):186-189,
https://doi.org/10.1016/j.jallcom.2013.08.033 .

An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes

Perović, Marija M.; Kusigerski, Vladan; Spasojević, Vojislav; Mraković, Ana Đ.; Blanuša, Jovan; Zentkova, M.; Mihalik, M.

(2013)

TY  - JOUR
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
AU  - Mraković, Ana Đ.
AU  - Blanuša, Jovan
AU  - Zentkova, M.
AU  - Mihalik, M.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5395
AB  - In this paper, we present the results of a systematic study of nonequilibrium dynamics in a strongly interacting super spin glass (SSG) nanoparticle La0.7Ca0.3MnO3 system by alternating current (ac) susceptibility measurements. Cole-Cole analysis of the obtained data revealed the simultaneous existence of two separated relaxation processes, which can be assigned to the relaxation of different magnetic entities. Along with the expected relaxation of the collective SSG phase, the existence of individual, nonagglomerated particles, which do not take part in the collective phase and relax independently, was proposed. A full dynamical scaling analysis was performed in order to elucidate the nature of the transition to a low-temperature SSG state in the interacting La0.7Ca0.3MnO3 nanoparticle sample.
T2  - Journal of Physics. D: Applied Physics
T1  - An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes
VL  - 46
IS  - 16
DO  - 10.1088/0022-3727/46/16/165001
ER  - 
@article{
author = "Perović, Marija M. and Kusigerski, Vladan and Spasojević, Vojislav and Mraković, Ana Đ. and Blanuša, Jovan and Zentkova, M. and Mihalik, M.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5395",
abstract = "In this paper, we present the results of a systematic study of nonequilibrium dynamics in a strongly interacting super spin glass (SSG) nanoparticle La0.7Ca0.3MnO3 system by alternating current (ac) susceptibility measurements. Cole-Cole analysis of the obtained data revealed the simultaneous existence of two separated relaxation processes, which can be assigned to the relaxation of different magnetic entities. Along with the expected relaxation of the collective SSG phase, the existence of individual, nonagglomerated particles, which do not take part in the collective phase and relax independently, was proposed. A full dynamical scaling analysis was performed in order to elucidate the nature of the transition to a low-temperature SSG state in the interacting La0.7Ca0.3MnO3 nanoparticle sample.",
journal = "Journal of Physics. D: Applied Physics",
title = "An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes",
volume = "46",
number = "16",
doi = "10.1088/0022-3727/46/16/165001"
}
Perović, M. M., Kusigerski, V., Spasojević, V., Mraković, A. Đ., Blanuša, J., Zentkova, M.,& Mihalik, M. (2013). An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes.
Journal of Physics. D: Applied Physics, 46(16).
https://doi.org/10.1088/0022-3727/46/16/165001
Perović MM, Kusigerski V, Spasojević V, Mraković AĐ, Blanuša J, Zentkova M, Mihalik M. An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes. Journal of Physics. D: Applied Physics. 2013;46(16)
Perović Marija M., Kusigerski Vladan, Spasojević Vojislav, Mraković Ana Đ., Blanuša Jovan, Zentkova M., Mihalik M., "An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes" Journal of Physics. D: Applied Physics, 46, no. 16 (2013),
https://doi.org/10.1088/0022-3727/46/16/165001 .
9
8
10

Sinteza, struktura i magnetne osobine nanočestičnog lantan-kalcijum manganita

Mraković, Ana Đ.

(Универзитет у Београду, Факултет за физичку хемију, 2013)

TY  - BOOK
AU  - Mraković, Ana Đ.
PY  - 2013
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=947
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:7502/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=44734735
UR  - http://nardus.mpn.gov.rs/123456789/3024
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7264
AB  - U ovom radu predstavljeni su rezultati ispitivanja strukturnih, mikrostrukturnih imagnetnih osobina nanočestičnog mešovitog manganovog oksida sastavaLa0.7Ca0.3MnO3 dobijenog primenom dveju različitih metoda sinteze: mehanohemijskesinteze i modifikovane sinteze samorasprostirućim talasom sagorevanja (SHS).Karakterizacija sintetisanih uzoraka izvršena je pomoću rendgenske difrakcije,transmisione elektronske mikroskopije i SQUID magnetometrije. Rendgenostrukturnaanaliza pokazala je da su uzorci dobijeni na oba načina jednofazni i da kristališu uprostornoj grupi Pnma (ortorombična distorzija perovskitne strukture O′ tipa).Primenom mehanohemijske metode sinteze dobijen je sistem koji se odlikujeznačajnim mikronaprezanjem, velikom magnetnom anizotropijom i postojanjemneuređenog površinskog sloja čija debljina iznosi ~ 30 % ukupnog dijametra čestice.Kao posledica aglomeracije čestica praha u uzorku su prisutne međučestične interakcije(dipol-dipol), što je potvrđeno opsežnim magnetnim merenjima. Ustanovljeno je da će,zavisno od eksperimentalnih uslova, sistem ispoljavati ili kolektivno spinsko ponašanjeanalogno stanju super-spinskog stakla (TP ≤ 46 K, H ≤ 500 Oe) ili superparamagnetnoponašanje.Velika pažnja posvećena je razvoju modifikovane sinteze SHS, sa ciljem da seobezbedi jednostepeni postupak za dobijanje nanočestičnih čvrstih rastvora visokekristaliničnosti. Ovaj postupak je uspešno primenjen za dobijanje predmetnog oksida unanočestičnoj formi. Nanočestice praha La0.7Ca0.3MnO3 sintetisanog modifikovanomSHS metodom odlikuju se visokim stepenom kristaliniteta bez prisustva amorfnog slojana površini i relativno uzanom raspodelom čestica po veličini (12-35) nm. Na osnovuanalize magnetnih merenja utvrđeno je da ovako dobijeni materijal istovremenoispoljava osobine koje su karakteristične i za masivne i za nanočestične sisteme, što jerezultat spoja visokog stepena kristaliničnosti sa jedne, i male veličine čestica sa drugestrane. Ponašanje magnetizacije u zavisnosti od temperature pruža jake indikacije zaprisustvo međučestičnih interakcija i u ovom uzorku.
AB  - This thesis presents the results of the investigation of structural, microstructuraland magnetic properties of nanosized mixed manganite samples with compositionLa0.7Ca0.3MnO3, obtained by using two different methods of synthesis:mechanochemical synthesis and modified self-propagating high-temperature synthesis(SHS). The samples were characterized by X-ray diffraction (XRD), transmissionelectron microscopy (TEM) and SQUID magnetometry. The structural analysis of XRDdata showed that both samples are single phase and crystallize within O′ type oforthorhombic perovskite structure (space group Pnma).The sample obtained by mechanochemical treatment exhibits significantmicrostrain, high magnetic anisotropy and the existence of a disordered layer on theparticle surface whose thickness amounts 30 % of a particle diameter. Due to particleagglomeration, a certain degree of interparticle interactions (dipolar) within the sampleare present, which was confirmed by comprehensive set of magnetic measurements. Itwas found that, depending on the experimental conditions, the system will exhibitcollective behavior which corresponds to super-spin glass state (TP ≤ 46 K, H ≤ 500 Oe)or superparamagnetic behavior.In order to provide a single-step process for the synthesis of nanoparticle solidsolutions with high crystallinity, special attention was paid to development ofappropriate modification of SHS synthesis. This procedure was successfully applied forobtaining the subject oxide in the nanoparticle form. Nanoparticles of La0.7Ca0.3MnO3powder synthesized by a modified SHS method are found to be highly crystallinewithout the presence of an amorphous surface layer and to have relatively narrowparticle size distribution (12-35) nm. The analysis of magnetic measurements showedthat the so obtained material exhibits interesting mixture of bulk- and nanocharacteristics,originating from the combination of high crystallization degree andsmall particle size. Temperature dependence of magnetization indicates the presence ofinterparticle interactions in this sample.
PB  - Универзитет у Београду, Факултет за физичку хемију
T2  - Универзитет у Београду
T1  - Sinteza, struktura i magnetne osobine nanočestičnog lantan-kalcijum manganita
T1  - Synthesis, structure and magnetic properties of nanosized lanthanum-calcium manganite
ER  - 
@phdthesis{
author = "Mraković, Ana Đ.",
year = "2013",
url = "http://eteze.bg.ac.rs/application/showtheses?thesesId=947, https://fedorabg.bg.ac.rs/fedora/get/o:7502/bdef:Content/download, http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=44734735, http://nardus.mpn.gov.rs/123456789/3024, http://vinar.vin.bg.ac.rs/handle/123456789/7264",
abstract = "U ovom radu predstavljeni su rezultati ispitivanja strukturnih, mikrostrukturnih imagnetnih osobina nanočestičnog mešovitog manganovog oksida sastavaLa0.7Ca0.3MnO3 dobijenog primenom dveju različitih metoda sinteze: mehanohemijskesinteze i modifikovane sinteze samorasprostirućim talasom sagorevanja (SHS).Karakterizacija sintetisanih uzoraka izvršena je pomoću rendgenske difrakcije,transmisione elektronske mikroskopije i SQUID magnetometrije. Rendgenostrukturnaanaliza pokazala je da su uzorci dobijeni na oba načina jednofazni i da kristališu uprostornoj grupi Pnma (ortorombična distorzija perovskitne strukture O′ tipa).Primenom mehanohemijske metode sinteze dobijen je sistem koji se odlikujeznačajnim mikronaprezanjem, velikom magnetnom anizotropijom i postojanjemneuređenog površinskog sloja čija debljina iznosi ~ 30 % ukupnog dijametra čestice.Kao posledica aglomeracije čestica praha u uzorku su prisutne međučestične interakcije(dipol-dipol), što je potvrđeno opsežnim magnetnim merenjima. Ustanovljeno je da će,zavisno od eksperimentalnih uslova, sistem ispoljavati ili kolektivno spinsko ponašanjeanalogno stanju super-spinskog stakla (TP ≤ 46 K, H ≤ 500 Oe) ili superparamagnetnoponašanje.Velika pažnja posvećena je razvoju modifikovane sinteze SHS, sa ciljem da seobezbedi jednostepeni postupak za dobijanje nanočestičnih čvrstih rastvora visokekristaliničnosti. Ovaj postupak je uspešno primenjen za dobijanje predmetnog oksida unanočestičnoj formi. Nanočestice praha La0.7Ca0.3MnO3 sintetisanog modifikovanomSHS metodom odlikuju se visokim stepenom kristaliniteta bez prisustva amorfnog slojana površini i relativno uzanom raspodelom čestica po veličini (12-35) nm. Na osnovuanalize magnetnih merenja utvrđeno je da ovako dobijeni materijal istovremenoispoljava osobine koje su karakteristične i za masivne i za nanočestične sisteme, što jerezultat spoja visokog stepena kristaliničnosti sa jedne, i male veličine čestica sa drugestrane. Ponašanje magnetizacije u zavisnosti od temperature pruža jake indikacije zaprisustvo međučestičnih interakcija i u ovom uzorku., This thesis presents the results of the investigation of structural, microstructuraland magnetic properties of nanosized mixed manganite samples with compositionLa0.7Ca0.3MnO3, obtained by using two different methods of synthesis:mechanochemical synthesis and modified self-propagating high-temperature synthesis(SHS). The samples were characterized by X-ray diffraction (XRD), transmissionelectron microscopy (TEM) and SQUID magnetometry. The structural analysis of XRDdata showed that both samples are single phase and crystallize within O′ type oforthorhombic perovskite structure (space group Pnma).The sample obtained by mechanochemical treatment exhibits significantmicrostrain, high magnetic anisotropy and the existence of a disordered layer on theparticle surface whose thickness amounts 30 % of a particle diameter. Due to particleagglomeration, a certain degree of interparticle interactions (dipolar) within the sampleare present, which was confirmed by comprehensive set of magnetic measurements. Itwas found that, depending on the experimental conditions, the system will exhibitcollective behavior which corresponds to super-spin glass state (TP ≤ 46 K, H ≤ 500 Oe)or superparamagnetic behavior.In order to provide a single-step process for the synthesis of nanoparticle solidsolutions with high crystallinity, special attention was paid to development ofappropriate modification of SHS synthesis. This procedure was successfully applied forobtaining the subject oxide in the nanoparticle form. Nanoparticles of La0.7Ca0.3MnO3powder synthesized by a modified SHS method are found to be highly crystallinewithout the presence of an amorphous surface layer and to have relatively narrowparticle size distribution (12-35) nm. The analysis of magnetic measurements showedthat the so obtained material exhibits interesting mixture of bulk- and nanocharacteristics,originating from the combination of high crystallization degree andsmall particle size. Temperature dependence of magnetization indicates the presence ofinterparticle interactions in this sample.",
publisher = "Универзитет у Београду, Факултет за физичку хемију",
journal = "Универзитет у Београду",
title = "Sinteza, struktura i magnetne osobine nanočestičnog lantan-kalcijum manganita, Synthesis, structure and magnetic properties of nanosized lanthanum-calcium manganite"
}
Mraković, A. Đ. (2013). Synthesis, structure and magnetic properties of nanosized lanthanum-calcium manganite.
Универзитет у Београду
Универзитет у Београду, Факултет за физичку хемију..
Mraković AĐ. Synthesis, structure and magnetic properties of nanosized lanthanum-calcium manganite. Универзитет у Београду. 2013;
Mraković Ana Đ., "Synthesis, structure and magnetic properties of nanosized lanthanum-calcium manganite" Универзитет у Београду (2013)

Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3

Mraković, Ana Đ.; Blanuša, Jovan; Primc, Darinka; Perović, Marija M.; Jaglicic, Zvonko; Kusigerski, Vladan; Spasojević, Vojislav

(2013)

TY  - JOUR
AU  - Mraković, Ana Đ.
AU  - Blanuša, Jovan
AU  - Primc, Darinka
AU  - Perović, Marija M.
AU  - Jaglicic, Zvonko
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5463
AB  - A modified solid-state combustion route was developed for the preparation of nanocrystalline manganite La0.7Ca0.3MnO3 in a single-step process, using metal nitrates and glucose/KNO3 redox mixture. The obtained sample was found to crystallize within O type of orthorhombic perovskite structure (space group Pnma), without the presence of other structural phases or impurities. Nanoparticles are found to have particle size in the range 12-35 nm, and to be highly crystalline without the presence of amorphous surface layer. Magnetic measurements show that nanoparticles display bulk-like magnetic properties, with ferromagnetic phase transition at 125 K and the absence of superparamagnetic or spin-glass behavior. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3
VL  - 39
IS  - 4
SP  - 3771
EP  - 3777
DO  - 10.1016/j.ceramint.2012.10.216
ER  - 
@article{
author = "Mraković, Ana Đ. and Blanuša, Jovan and Primc, Darinka and Perović, Marija M. and Jaglicic, Zvonko and Kusigerski, Vladan and Spasojević, Vojislav",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5463",
abstract = "A modified solid-state combustion route was developed for the preparation of nanocrystalline manganite La0.7Ca0.3MnO3 in a single-step process, using metal nitrates and glucose/KNO3 redox mixture. The obtained sample was found to crystallize within O type of orthorhombic perovskite structure (space group Pnma), without the presence of other structural phases or impurities. Nanoparticles are found to have particle size in the range 12-35 nm, and to be highly crystalline without the presence of amorphous surface layer. Magnetic measurements show that nanoparticles display bulk-like magnetic properties, with ferromagnetic phase transition at 125 K and the absence of superparamagnetic or spin-glass behavior. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3",
volume = "39",
number = "4",
pages = "3771-3777",
doi = "10.1016/j.ceramint.2012.10.216"
}
Mraković, A. Đ., Blanuša, J., Primc, D., Perović, M. M., Jaglicic, Z., Kusigerski, V.,& Spasojević, V. (2013). Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3.
Ceramics International, 39(4), 3771-3777.
https://doi.org/10.1016/j.ceramint.2012.10.216
Mraković AĐ, Blanuša J, Primc D, Perović MM, Jaglicic Z, Kusigerski V, Spasojević V. Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3. Ceramics International. 2013;39(4):3771-3777
Mraković Ana Đ., Blanuša Jovan, Primc Darinka, Perović Marija M., Jaglicic Zvonko, Kusigerski Vladan, Spasojević Vojislav, "Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3" Ceramics International, 39, no. 4 (2013):3771-3777,
https://doi.org/10.1016/j.ceramint.2012.10.216 .
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Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5

Gebrel, Z.; Blanuša, Jovan; Spasojević, Vojislav; Kusigerski, Vladan; Mraković, Ana Đ.; Alqat, A.; Perović, Marija M.

(2013)

TY  - JOUR
AU  - Gebrel, Z.
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Mraković, Ana Đ.
AU  - Alqat, A.
AU  - Perović, Marija M.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5515
AB  - Polycrystalline samples of Y2Cu2O5 were for the first time sintered from precursors obtained by two combustion routes - the glycine-nitrate method (sample S1) and a modified self-propagating high-temperature synthesis (sample S2). The detailed X-ray diffraction analysis has confirmed that both samples are well crystallized and single phase, with the high crystallization degree and cation ordering within a Cu sublattice. Magnetic characterization has shown magnetic behavior typical of pure Y2Cu2O5. The distinctive advantages of these new synthesis routes in comparison to the ceramic sintering are in simplification of the overall procedure as well as in a significant reduction of synthesis duration from several days down to 31 h (S1) or 12 h (S2). (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5
VL  - 568
SP  - 55
EP  - 59
DO  - 10.1016/j.jallcom.2013.03.133
ER  - 
@article{
author = "Gebrel, Z. and Blanuša, Jovan and Spasojević, Vojislav and Kusigerski, Vladan and Mraković, Ana Đ. and Alqat, A. and Perović, Marija M.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5515",
abstract = "Polycrystalline samples of Y2Cu2O5 were for the first time sintered from precursors obtained by two combustion routes - the glycine-nitrate method (sample S1) and a modified self-propagating high-temperature synthesis (sample S2). The detailed X-ray diffraction analysis has confirmed that both samples are well crystallized and single phase, with the high crystallization degree and cation ordering within a Cu sublattice. Magnetic characterization has shown magnetic behavior typical of pure Y2Cu2O5. The distinctive advantages of these new synthesis routes in comparison to the ceramic sintering are in simplification of the overall procedure as well as in a significant reduction of synthesis duration from several days down to 31 h (S1) or 12 h (S2). (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5",
volume = "568",
pages = "55-59",
doi = "10.1016/j.jallcom.2013.03.133"
}
Gebrel, Z., Blanuša, J., Spasojević, V., Kusigerski, V., Mraković, A. Đ., Alqat, A.,& Perović, M. M. (2013). Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5.
Journal of Alloys and Compounds, 568, 55-59.
https://doi.org/10.1016/j.jallcom.2013.03.133
Gebrel Z, Blanuša J, Spasojević V, Kusigerski V, Mraković AĐ, Alqat A, Perović MM. Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5. Journal of Alloys and Compounds. 2013;568:55-59
Gebrel Z., Blanuša Jovan, Spasojević Vojislav, Kusigerski Vladan, Mraković Ana Đ., Alqat A., Perović Marija M., "Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5" Journal of Alloys and Compounds, 568 (2013):55-59,
https://doi.org/10.1016/j.jallcom.2013.03.133 .
1
2
2

Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3

Perović, Marija M.; Mraković, Ana Đ.; Kusigerski, Vladan; Blanuša, Jovan; Spasojević, Vojislav

(2012)

TY  - JOUR
AU  - Perović, Marija M.
AU  - Mraković, Ana Đ.
AU  - Kusigerski, Vladan
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5059
AB  - Investigation of complex, nonequilibrium dynamics of super spin glass nanoparticle La0.7Ca0.3MnO3 sample was conducted through the comprehensive set of magnetization relaxation measurements. It comprised measurements of thermoremanent and zero-field cooled magnetization time decay under various temperature and field conditions, as well as study of the ageing effect for different waiting times. A variety of theoretical models dealing with nonequilibrium dynamics in spin glasses was successfully implemented in the description of experimentally observed relaxation phenomena. Collective behaviour observed at low temperatures and intermediate magnetic fields was found to be the consequence of the random orientation of easy axes and significant dipolar interactions between nanoparticle moments. (c) 2012 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3
VL  - 136
IS  - 1
SP  - 196
EP  - 204
DO  - 10.1016/j.matchemphys.2012.06.052
ER  - 
@article{
author = "Perović, Marija M. and Mraković, Ana Đ. and Kusigerski, Vladan and Blanuša, Jovan and Spasojević, Vojislav",
year = "2012",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5059",
abstract = "Investigation of complex, nonequilibrium dynamics of super spin glass nanoparticle La0.7Ca0.3MnO3 sample was conducted through the comprehensive set of magnetization relaxation measurements. It comprised measurements of thermoremanent and zero-field cooled magnetization time decay under various temperature and field conditions, as well as study of the ageing effect for different waiting times. A variety of theoretical models dealing with nonequilibrium dynamics in spin glasses was successfully implemented in the description of experimentally observed relaxation phenomena. Collective behaviour observed at low temperatures and intermediate magnetic fields was found to be the consequence of the random orientation of easy axes and significant dipolar interactions between nanoparticle moments. (c) 2012 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3",
volume = "136",
number = "1",
pages = "196-204",
doi = "10.1016/j.matchemphys.2012.06.052"
}
Perović, M. M., Mraković, A. Đ., Kusigerski, V., Blanuša, J.,& Spasojević, V. (2012). Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3.
Materials Chemistry and Physics, 136(1), 196-204.
https://doi.org/10.1016/j.matchemphys.2012.06.052
Perović MM, Mraković AĐ, Kusigerski V, Blanuša J, Spasojević V. Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3. Materials Chemistry and Physics. 2012;136(1):196-204
Perović Marija M., Mraković Ana Đ., Kusigerski Vladan, Blanuša Jovan, Spasojević Vojislav, "Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3" Materials Chemistry and Physics, 136, no. 1 (2012):196-204,
https://doi.org/10.1016/j.matchemphys.2012.06.052 .
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