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Matović, Branko

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Authority KeyName Variants
orcid::0000-0001-8022-1863
  • Matović, Branko (214)
Projects
Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine Physics of nanostructured oxide materials and strongly correlated systems
Magmatism and geodynamics of the Balkan Peninsula from Mesozoic to present day: significance for the formation of metallic and non-metallic mineral deposits Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden
Nanostructured multifunctional materials and nanocomposites Lithium-ion batteries and fuel cells - research and development
Optoelectronics nanodimension systems - the rout towards applications Functional, Functionalized and Advanced Nanomaterials
Zero- to Three-Dimensional Nanostructures for Application in Electronics and Renewable Energy Sources: Synthesis, Characterization and Processing Fizika niskodimenzionih i nanometarskih struktura i materijala
Ministry of Science and Environmental Protection of Serbia [142016] H2FC - Integrating European Infrastructure to support science and development of Hydrogen- and Fuel Cell Technologies towards European Strategy for Sustainable, Competitive and Secure Energy
Investigation of intermetallics and semiconductors and possible application in renewable energy sources Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions
Oxide-based environmentally-friendly porous materials for genotoxic substances removal Development of Methods of Monitoring and Removal of Biologically Actives Substances Aimed at Improving the Quality of the Environment
Directed synthesis, structure and properties of multifunctional materials Combinatorial libraries of heterogeneous catalysts, natural products, and their derivatives and analogues: the way to biologically active compounds
Study of structure-function relationships in the plant cell wall and modifications of the wall structure by enzyme engineering Minerals of Serbia: composition, genesis, application and contribution to the environmental sustainability
Development and characterization of novel biosorbent for natural and waste water treatment Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology
Ministry of Economic Development and Trade of Ontario, Ministry of Science and Technological Development of the Republic of Serbia Ministry of Science and Environmental Protection of the Republic of Serbia [142003]
Ministry of Science of the Republic of Serbia Ministry of Science of the Republic of Serbia [142016]
A. von Humboldt Foundation A. von Humboldt Foundation, MSEP of Serbia [142003]
bilateral project Structural anisotropy of plant cell walls of various origin and their constituent polymers, using differential polarized laser scanning microscopy (DP-LSM) BRNSF [T10GKNT-005, T11SRB-013]

Author's Bibliography

Structural and morphological characterization of iron-doped sol-gel derived mullite powders

Ilić, Svetlana M.; Babić, Biljana M.; Bjelajac, Anđelika; Stoimenov, Nikolay; Kljajević, Ljiljana M.; Pošarac-Marković, Milica B.; Matović, Branko

(2020)

TY  - JOUR
AU  - Ilić, Svetlana M.
AU  - Babić, Biljana M.
AU  - Bjelajac, Anđelika
AU  - Stoimenov, Nikolay
AU  - Kljajević, Ljiljana M.
AU  - Pošarac-Marković, Milica B.
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8823
AB  - The structural and morphological properties of iron-doped mullite powders are the subject of the present study. The powders of undoped and iron-doped mullite in the composition range of 3–15 wt% Fe2O3 were synthesized by a combination of sol-gel and combustion methods. The excess of water and urea were introduced in reaction solutions to enhance the copolymerization of aluminum and silicon species. The results of structural characterization revealed that the synthesized mullite powders were amorphous of a hybrid type. The specific surface area of the undoped mullite powder was 262 m2 g-1 with a maximum pore radius (dp) of 2 nm classifying it into mesoporous materials. The addition of iron has reduced the specific surface area, while the pore size value remained the same except for the sample with 3 wt% Fe2O3 (SBET = 278 m2 g-1; dp = 3 nm). The presence of iron caused lowering the temperature of liquid phase formation, while present urea combusted providing the increase of the temperature locally that caused the sintering and formation of agglomerates of smaller particles. However, the results of the particle size analysis are not straightforward. The values of mean volume diameter (D[3,4]) indicated that the particle size increased to 6 wt% Fe2O3 (123.6 μm), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 μm. Thus, the added iron contributed to the more uniform particle size distribution. The SEM analysis has also shown the coarse powder particles consisted of the coalesced smaller particles. © 2020 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Structural and morphological characterization of iron-doped sol-gel derived mullite powders
VL  - 46
IS  - 9
SP  - 13107
EP  - 13113
DO  - 10.1016/j.ceramint.2020.02.083
ER  - 
@article{
author = "Ilić, Svetlana M. and Babić, Biljana M. and Bjelajac, Anđelika and Stoimenov, Nikolay and Kljajević, Ljiljana M. and Pošarac-Marković, Milica B. and Matović, Branko",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8823",
abstract = "The structural and morphological properties of iron-doped mullite powders are the subject of the present study. The powders of undoped and iron-doped mullite in the composition range of 3–15 wt% Fe2O3 were synthesized by a combination of sol-gel and combustion methods. The excess of water and urea were introduced in reaction solutions to enhance the copolymerization of aluminum and silicon species. The results of structural characterization revealed that the synthesized mullite powders were amorphous of a hybrid type. The specific surface area of the undoped mullite powder was 262 m2 g-1 with a maximum pore radius (dp) of 2 nm classifying it into mesoporous materials. The addition of iron has reduced the specific surface area, while the pore size value remained the same except for the sample with 3 wt% Fe2O3 (SBET = 278 m2 g-1; dp = 3 nm). The presence of iron caused lowering the temperature of liquid phase formation, while present urea combusted providing the increase of the temperature locally that caused the sintering and formation of agglomerates of smaller particles. However, the results of the particle size analysis are not straightforward. The values of mean volume diameter (D[3,4]) indicated that the particle size increased to 6 wt% Fe2O3 (123.6 μm), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 μm. Thus, the added iron contributed to the more uniform particle size distribution. The SEM analysis has also shown the coarse powder particles consisted of the coalesced smaller particles. © 2020 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Structural and morphological characterization of iron-doped sol-gel derived mullite powders",
volume = "46",
number = "9",
pages = "13107-13113",
doi = "10.1016/j.ceramint.2020.02.083"
}

Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics

Matović, Branko; Maletaškić, Jelena; Zagorac, Jelena B.; Pavkov, Vladimir; Maki, Ryosuke S.S.; Yoshida, Katsumi; Yano, Toyohiko

(2020)

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Zagorac, Jelena B.
AU  - Pavkov, Vladimir
AU  - Maki, Ryosuke S.S.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8668
AB  - Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics
VL  - 40
IS  - 7
SP  - 2652
EP  - 2657
DO  - 10.1016/j.jeurceramsoc.2019.11.012
ER  - 
@article{
author = "Matović, Branko and Maletaškić, Jelena and Zagorac, Jelena B. and Pavkov, Vladimir and Maki, Ryosuke S.S. and Yoshida, Katsumi and Yano, Toyohiko",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8668",
abstract = "Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics",
volume = "40",
number = "7",
pages = "2652-2657",
doi = "10.1016/j.jeurceramsoc.2019.11.012"
}
1

Phase and microstructural study of urinary stones

Mirković, Miljana M.; Došen, Anja; Erić, Suzana; Vulić, Predrag; Matović, Branko; Rosić, Aleksandra

(2020)

TY  - JOUR
AU  - Mirković, Miljana M.
AU  - Došen, Anja
AU  - Erić, Suzana
AU  - Vulić, Predrag
AU  - Matović, Branko
AU  - Rosić, Aleksandra
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8663
AB  - In this paper we present the phase and morphological characteristics of urinary stones from Serbian patients. The study included for the first time the determination of the phase composition and a statistical analysis of the presence of different types of urinary stones in both men and women in Serbia. The main goal of study was representation of collected data for the first time. For past three years, more than 600 samples were collected from Serbian patients. The phase composition of all samples of urinary stones was investigated using XRD analysis. Morphology and chemical composition of phases in some characteristic samples was determinate by the SEM-EDS analysis. Results indicate that there are several different types of urinary stones that vary in mineral composition, chemistry and morphology. It was found that 312 (52%) of the 600 stones were composed of calcium oxalate minerals (CaOx): 17.3% of which were pure calcium oxalate monohydrate COM, 4% were pure calcium oxalate dihydrate COD; 200 (33.3%) were a mixture of CaOx and Hydroxyapatite HA, 19 (3.1%) were uric acid (uricite) UA and uric acid dihydrate UAD, 17 (2.8%) were a combination of UA and CaOx minerals, 41 (6.8%) were combination of CaP minerals and CaOx, 11 (1.9%) were cystine (Cy) stones. The obtained data shows the diversity of types of urinary stones. Morphological, chemical and XRPD analysis give us statistical data which shows that the most common urinary stones from Serbian patients are from CaOx group and in most of cases are associated with CaP. © 2019 Elsevier B.V.
T2  - Microchemical Journal
T1  - Phase and microstructural study of urinary stones
VL  - 152
SP  - 104429
DO  - 10.1016/j.microc.2019.104429
ER  - 
@article{
author = "Mirković, Miljana M. and Došen, Anja and Erić, Suzana and Vulić, Predrag and Matović, Branko and Rosić, Aleksandra",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8663",
abstract = "In this paper we present the phase and morphological characteristics of urinary stones from Serbian patients. The study included for the first time the determination of the phase composition and a statistical analysis of the presence of different types of urinary stones in both men and women in Serbia. The main goal of study was representation of collected data for the first time. For past three years, more than 600 samples were collected from Serbian patients. The phase composition of all samples of urinary stones was investigated using XRD analysis. Morphology and chemical composition of phases in some characteristic samples was determinate by the SEM-EDS analysis. Results indicate that there are several different types of urinary stones that vary in mineral composition, chemistry and morphology. It was found that 312 (52%) of the 600 stones were composed of calcium oxalate minerals (CaOx): 17.3% of which were pure calcium oxalate monohydrate COM, 4% were pure calcium oxalate dihydrate COD; 200 (33.3%) were a mixture of CaOx and Hydroxyapatite HA, 19 (3.1%) were uric acid (uricite) UA and uric acid dihydrate UAD, 17 (2.8%) were a combination of UA and CaOx minerals, 41 (6.8%) were combination of CaP minerals and CaOx, 11 (1.9%) were cystine (Cy) stones. The obtained data shows the diversity of types of urinary stones. Morphological, chemical and XRPD analysis give us statistical data which shows that the most common urinary stones from Serbian patients are from CaOx group and in most of cases are associated with CaP. © 2019 Elsevier B.V.",
journal = "Microchemical Journal",
title = "Phase and microstructural study of urinary stones",
volume = "152",
pages = "104429",
doi = "10.1016/j.microc.2019.104429"
}
1
1
1
1

Synthesis, densification and characterization of Ag doped ceria nanopowders

Matović, Branko; Butulija, Svetlana; Dohčević-Mitrović, Zorana; Minović-Arsić, Tamara; Luković, Jelena M.; Bošković, Snežana B.; Maletaškić, Jelena

(2020)

TY  - JOUR
AU  - Matović, Branko
AU  - Butulija, Svetlana
AU  - Dohčević-Mitrović, Zorana
AU  - Minović-Arsić, Tamara
AU  - Luković, Jelena M.
AU  - Bošković, Snežana B.
AU  - Maletaškić, Jelena
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8572
AB  - Nanosized Ag-doped ceria (Ce1-xAlxO2-δ)powders (0.1 ≤ x ≤ 0.04) were obtained by self-propagating room temperature reaction. The solid solubility of Ag into ceria lattice was the highest reported so far. X-ray diffraction analysis and field emission scanning microscopy results showed that the doped samples are single phase solid solutions with fluorite-type structure and all prepared powders were nanometric in size. The average size of Ce1-xAgxO2-▯ particles lies at about 4 nm. Raman spectra revealed an increase in the amount of oxygen vacancies with the increase of Ag concentration, such as is foreseen. The thermal stability of solid solution was followed by XRD. Microstructure development was studied by scanning electron microscopy. By controlling the processing variables, it was possible to obtain high density samples with homogeneous microstructure at low sintering temperature. © 2020 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Synthesis, densification and characterization of Ag doped ceria nanopowders
VL  - 40
IS  - 5
SP  - 1983
EP  - 1988
DO  - 10.1016/j.jeurceramsoc.2020.01.013
ER  - 
@article{
author = "Matović, Branko and Butulija, Svetlana and Dohčević-Mitrović, Zorana and Minović-Arsić, Tamara and Luković, Jelena M. and Bošković, Snežana B. and Maletaškić, Jelena",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8572",
abstract = "Nanosized Ag-doped ceria (Ce1-xAlxO2-δ)powders (0.1 ≤ x ≤ 0.04) were obtained by self-propagating room temperature reaction. The solid solubility of Ag into ceria lattice was the highest reported so far. X-ray diffraction analysis and field emission scanning microscopy results showed that the doped samples are single phase solid solutions with fluorite-type structure and all prepared powders were nanometric in size. The average size of Ce1-xAgxO2-▯ particles lies at about 4 nm. Raman spectra revealed an increase in the amount of oxygen vacancies with the increase of Ag concentration, such as is foreseen. The thermal stability of solid solution was followed by XRD. Microstructure development was studied by scanning electron microscopy. By controlling the processing variables, it was possible to obtain high density samples with homogeneous microstructure at low sintering temperature. © 2020 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Synthesis, densification and characterization of Ag doped ceria nanopowders",
volume = "40",
number = "5",
pages = "1983-1988",
doi = "10.1016/j.jeurceramsoc.2020.01.013"
}
1
1
1

Extreme pressure conditions of bas based materials: Detailed study of structural changes, band gap engineering, elastic constants and mechanical properties

Zagorac, Dejan; Zagorac, Jelena; Doll, Klaus; Čebela, Maria; Matović, Branko

(2019)

TY  - JOUR
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena
AU  - Doll, Klaus
AU  - Čebela, Maria
AU  - Matović, Branko
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8839
AB  - A Density Functional Theory (DFT) study has been performed in order to investigate behaviour of barium sulfide (BaS) at high pressures, and relationship between computed properties, in great detail. Novel predicted and previously synthesized BaS modifications have been calculated using Local Density Approximations (LDA) and Generalized Gradient Approximation (GGA) functionals. In particular, a detailed investigation of structural changes and its corresponding volume effect up to 100 GPa, with gradual pressure increase, has been performed from the first principles. Band gap engineering of the experimentally observed BaS phases at high pressures has been simulated and structure-property relationship is investigated. For each of the predicted and experimentally observed BaS structures, elastic constants and mechanical properties under compression have been investigated (e.g. ductility/brittleness, hardness, anisotropy). This study offers a new perspective of barium sulphide as a high pressure material with application in ceramics, optical and electrical technologies.
T2  - Processing and Application of Ceramics
T1  - Extreme pressure conditions of bas based materials: Detailed study of structural changes, band gap engineering, elastic constants and mechanical properties
VL  - 13
IS  - 4
SP  - 401
EP  - 410
DO  - 10.2298/PAC1904401Z
ER  - 
@article{
author = "Zagorac, Dejan and Zagorac, Jelena and Doll, Klaus and Čebela, Maria and Matović, Branko",
year = "2019",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8839",
abstract = "A Density Functional Theory (DFT) study has been performed in order to investigate behaviour of barium sulfide (BaS) at high pressures, and relationship between computed properties, in great detail. Novel predicted and previously synthesized BaS modifications have been calculated using Local Density Approximations (LDA) and Generalized Gradient Approximation (GGA) functionals. In particular, a detailed investigation of structural changes and its corresponding volume effect up to 100 GPa, with gradual pressure increase, has been performed from the first principles. Band gap engineering of the experimentally observed BaS phases at high pressures has been simulated and structure-property relationship is investigated. For each of the predicted and experimentally observed BaS structures, elastic constants and mechanical properties under compression have been investigated (e.g. ductility/brittleness, hardness, anisotropy). This study offers a new perspective of barium sulphide as a high pressure material with application in ceramics, optical and electrical technologies.",
journal = "Processing and Application of Ceramics",
title = "Extreme pressure conditions of bas based materials: Detailed study of structural changes, band gap engineering, elastic constants and mechanical properties",
volume = "13",
number = "4",
pages = "401-410",
doi = "10.2298/PAC1904401Z"
}

New Way of Synthesis of Basic Bismuth Nitrate by Electrodeposition from Ethanol Solution: Characterization and Application for Removal of RB19 from Water

Najdanović, Slobodan M.; Petrović, Milica M.; Kostić, Miloš M.; Velinov, Nena D.; Radović Vučić, Miljana D.; Matović, Branko; Bojić, Aleksandar Lj.

(2019)

TY  - JOUR
AU  - Najdanović, Slobodan M.
AU  - Petrović, Milica M.
AU  - Kostić, Miloš M.
AU  - Velinov, Nena D.
AU  - Radović Vučić, Miljana D.
AU  - Matović, Branko
AU  - Bojić, Aleksandar Lj.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8610
AB  - A new method of synthesis was developed for the preparation of sorbent basic bismuth nitrate [Bi6O5(OH)(3)](NO3)(5)center dot 2H(2)O (BBN-EtOH). This electrochemical method includes electrodeposition from an acidic Bi(III) solution in 96% ethanol at a constant current density of 150.0 mA cm(-2). Final product was obtained by thermal treatment at 200 degrees C. Characterization of BBN-EtOH was conducted by employing XRD, FTIR, SEM-EDX as well as BET, and its pI was also determined. The analysis showed that the material obtained is pure [Bi6O5(OH)(3)](NO3)(5)center dot 2H(2)O. Morphologically, it is composed of aggregates which were formed of several smaller particles of various shapes and sizes, some smaller than 100 nm. Electrochemically synthesized sorbent (BBN-EtOH) was used for the removal of the textile dye Reactive Blue 19 (RB19) from deionized water and model solution of river water, and it showed considerably superior sorption performance compared to other inorganic sorbents synthesized by conventional methods reported in the literature. Kinetic study suggests that the sorption process is both under reaction and diffusion control. Equilibrium of the sorption process was attained in several minutes, i.e., the sorption process is very fast. The sorption equilibrium data were well interpreted by the Langmuir, Sips and Brouers-Sotolongo isotherm. The maximum sorption performance was achieved at pH 2.0, and according to the Langmuir isotherm, it is 1344.99 mg g(-1).
T2  - Arabian Journal for Science and Engineering
T1  - New Way of Synthesis of Basic Bismuth Nitrate by Electrodeposition from Ethanol Solution: Characterization and Application for Removal of RB19 from Water
VL  - 44
IS  - 12
SP  - 9939
EP  - 9950
DO  - 10.1007/s13369-019-04177-y
ER  - 
@article{
author = "Najdanović, Slobodan M. and Petrović, Milica M. and Kostić, Miloš M. and Velinov, Nena D. and Radović Vučić, Miljana D. and Matović, Branko and Bojić, Aleksandar Lj.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8610",
abstract = "A new method of synthesis was developed for the preparation of sorbent basic bismuth nitrate [Bi6O5(OH)(3)](NO3)(5)center dot 2H(2)O (BBN-EtOH). This electrochemical method includes electrodeposition from an acidic Bi(III) solution in 96% ethanol at a constant current density of 150.0 mA cm(-2). Final product was obtained by thermal treatment at 200 degrees C. Characterization of BBN-EtOH was conducted by employing XRD, FTIR, SEM-EDX as well as BET, and its pI was also determined. The analysis showed that the material obtained is pure [Bi6O5(OH)(3)](NO3)(5)center dot 2H(2)O. Morphologically, it is composed of aggregates which were formed of several smaller particles of various shapes and sizes, some smaller than 100 nm. Electrochemically synthesized sorbent (BBN-EtOH) was used for the removal of the textile dye Reactive Blue 19 (RB19) from deionized water and model solution of river water, and it showed considerably superior sorption performance compared to other inorganic sorbents synthesized by conventional methods reported in the literature. Kinetic study suggests that the sorption process is both under reaction and diffusion control. Equilibrium of the sorption process was attained in several minutes, i.e., the sorption process is very fast. The sorption equilibrium data were well interpreted by the Langmuir, Sips and Brouers-Sotolongo isotherm. The maximum sorption performance was achieved at pH 2.0, and according to the Langmuir isotherm, it is 1344.99 mg g(-1).",
journal = "Arabian Journal for Science and Engineering",
title = "New Way of Synthesis of Basic Bismuth Nitrate by Electrodeposition from Ethanol Solution: Characterization and Application for Removal of RB19 from Water",
volume = "44",
number = "12",
pages = "9939-9950",
doi = "10.1007/s13369-019-04177-y"
}
1
1
1

Combined magnetic and structural characterization of hidrothermal bismuth ferrite (BiFeO3) nanoparticles

Maletaškić, Jelena; Čebela, Maria; Prekajski-Đorđević, Marija D.; Kozlenko, Denis; Kichanov, Sergey; Mitrić, Miodrag; Matović, Branko

(2019)

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Čebela, Maria
AU  - Prekajski-Đorđević, Marija D.
AU  - Kozlenko, Denis
AU  - Kichanov, Sergey
AU  - Mitrić, Miodrag
AU  - Matović, Branko
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8429
AB  - Bismuth ferrite (BiFeO3) was synthesized by hydrothermal method. The crystal and magnetic structures of BiFeO3 have been studied by means of X-ray diffraction and neutron powder diffraction at ambient temperature. Microstructure was analysed by scanning electron microscopy. Quantitative phase analysis by the Rietveld method was conducted and crystallite sizes of 27 nm were determined from the XRD line broadening. The magnetic structure of BiFeO3 is described by the G-type antiferromagnetic order with magnetic peak located at 4.6 Å and a noticeable magnetic contribution to a reflection located at 2.4 Å in the diffraction pattern. The values of the ordered magnetic moment of Fe ions μFe=3.8(1) μB, obtained at ambient conditions, are consistent with those determined earlier. The magnetic moments in the crystal plane z = const are arranged in parallel, changing the direction from [100] to [ 110 ] when moving from one to the other z = const plane. © 2018 Authors. Published by the International Institute for the Science of Sintering.
T2  - Science of Sintering
T1  - Combined magnetic and structural characterization of hidrothermal bismuth ferrite (BiFeO3) nanoparticles
VL  - 51
IS  - 1
SP  - 71
EP  - 79
DO  - 10.2298/SOS1901071M
ER  - 
@article{
author = "Maletaškić, Jelena and Čebela, Maria and Prekajski-Đorđević, Marija D. and Kozlenko, Denis and Kichanov, Sergey and Mitrić, Miodrag and Matović, Branko",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8429",
abstract = "Bismuth ferrite (BiFeO3) was synthesized by hydrothermal method. The crystal and magnetic structures of BiFeO3 have been studied by means of X-ray diffraction and neutron powder diffraction at ambient temperature. Microstructure was analysed by scanning electron microscopy. Quantitative phase analysis by the Rietveld method was conducted and crystallite sizes of 27 nm were determined from the XRD line broadening. The magnetic structure of BiFeO3 is described by the G-type antiferromagnetic order with magnetic peak located at 4.6 Å and a noticeable magnetic contribution to a reflection located at 2.4 Å in the diffraction pattern. The values of the ordered magnetic moment of Fe ions μFe=3.8(1) μB, obtained at ambient conditions, are consistent with those determined earlier. The magnetic moments in the crystal plane z = const are arranged in parallel, changing the direction from [100] to [ 110 ] when moving from one to the other z = const plane. © 2018 Authors. Published by the International Institute for the Science of Sintering.",
journal = "Science of Sintering",
title = "Combined magnetic and structural characterization of hidrothermal bismuth ferrite (BiFeO3) nanoparticles",
volume = "51",
number = "1",
pages = "71-79",
doi = "10.2298/SOS1901071M"
}

Shungite – a carbon-mineral rock material: Its sinterability and possible applications

Obradović, Nina; Gigov, Mihajlo; Đorđević, Aleksandar; Kern, Frank; Dmitrović, Svetlana; Matović, Branko; Ðorđević, Antonije; Tshantshapanyan, Ani; Vlahović, Branislav; Petrović, Predrag; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Obradović, Nina
AU  - Gigov, Mihajlo
AU  - Đorđević, Aleksandar
AU  - Kern, Frank
AU  - Dmitrović, Svetlana
AU  - Matović, Branko
AU  - Ðorđević, Antonije
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Petrović, Predrag
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8443
AB  - The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.
T2  - Processing and Application of Ceramics
T1  - Shungite – a carbon-mineral rock material: Its sinterability and possible applications
VL  - 13
IS  - 1
SP  - 89
EP  - 97
DO  - 10.2298/PAC1901089O
ER  - 
@article{
author = "Obradović, Nina and Gigov, Mihajlo and Đorđević, Aleksandar and Kern, Frank and Dmitrović, Svetlana and Matović, Branko and Ðorđević, Antonije and Tshantshapanyan, Ani and Vlahović, Branislav and Petrović, Predrag and Pavlović, Vladimir B.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8443",
abstract = "The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.",
journal = "Processing and Application of Ceramics",
title = "Shungite – a carbon-mineral rock material: Its sinterability and possible applications",
volume = "13",
number = "1",
pages = "89-97",
doi = "10.2298/PAC1901089O"
}
2
2
2

Direct Formation of Burkeite in the Geothermal Waters at Vranjska Banja, Serbia

Todorović, Bratislav Ž.; Stojiljković, Dragan T.; Pantić-Petrović, Tanja; Matović, Branko; Prekajski-Đorđević, Marija D.; Petrović, Sanja M.; Stojiljković, Milena S.; Stevanović, Miloš M.

(2019)

TY  - JOUR
AU  - Todorović, Bratislav Ž.
AU  - Stojiljković, Dragan T.
AU  - Pantić-Petrović, Tanja
AU  - Matović, Branko
AU  - Prekajski-Đorđević, Marija D.
AU  - Petrović, Sanja M.
AU  - Stojiljković, Milena S.
AU  - Stevanović, Miloš M.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8493
AB  - There are no available data about direct burkeite formation on the geothermal waters pipelines in Europe. Data about accompanying minerals of burkeite are also scarce. This mineral has been found in the scale on pipelines of VG-2 and VG-3 boreholes at Vranjska Banja, Serbia. Geothermal waters from these boreholes have temperatures in the range of 103 and 105 °C which classifies them to the warmest waters in the continental Europe. Based on physicochemical and geochemical data, VG-2 and VG-3 geothermal waters can be classified as Na–Alk–SO4Cl type of waters. According to their temperatures, total hardness and pH values, these waters belong to hyperthermal, very soft and moderately alkaline. Calculated LSI (0.4 and 1.7) and RSI (6.5 and 4.8) values indicate their scale formation tendency. Results of the spectrometric scale examination from the pipe deposits provide a clear qualitative and quantitative burkeite characterization with its accompanying minerals. FTIR analysis points to the presence of carbonate (1766, 1458, 877 and 705 cm−1) and sulfate bands (1139, 1116 and 617 cm−1). Apart from the qualitative analysis, XRD also shows the burkeite mass part in the scale. VG-2 geothermal water contains about 50% of burkeite, which is associated with trona mineral (40%) and smaller amount of halite of about 10%. Burkeite is a dominant phase (> 60%) in VG-3 water, with the presence of a significant halite quantity (> 35%) and a minor calcite quantity (2%). © 2019, International Association for Mathematical Geosciences.
T2  - Natural Resources Research
T1  - Direct Formation of Burkeite in the Geothermal Waters at Vranjska Banja, Serbia
VL  - 28
IS  - 4
SP  - 1259
EP  - 1267
DO  - 10.1007/s11053-019-09455-y
ER  - 
@article{
author = "Todorović, Bratislav Ž. and Stojiljković, Dragan T. and Pantić-Petrović, Tanja and Matović, Branko and Prekajski-Đorđević, Marija D. and Petrović, Sanja M. and Stojiljković, Milena S. and Stevanović, Miloš M.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8493",
abstract = "There are no available data about direct burkeite formation on the geothermal waters pipelines in Europe. Data about accompanying minerals of burkeite are also scarce. This mineral has been found in the scale on pipelines of VG-2 and VG-3 boreholes at Vranjska Banja, Serbia. Geothermal waters from these boreholes have temperatures in the range of 103 and 105 °C which classifies them to the warmest waters in the continental Europe. Based on physicochemical and geochemical data, VG-2 and VG-3 geothermal waters can be classified as Na–Alk–SO4Cl type of waters. According to their temperatures, total hardness and pH values, these waters belong to hyperthermal, very soft and moderately alkaline. Calculated LSI (0.4 and 1.7) and RSI (6.5 and 4.8) values indicate their scale formation tendency. Results of the spectrometric scale examination from the pipe deposits provide a clear qualitative and quantitative burkeite characterization with its accompanying minerals. FTIR analysis points to the presence of carbonate (1766, 1458, 877 and 705 cm−1) and sulfate bands (1139, 1116 and 617 cm−1). Apart from the qualitative analysis, XRD also shows the burkeite mass part in the scale. VG-2 geothermal water contains about 50% of burkeite, which is associated with trona mineral (40%) and smaller amount of halite of about 10%. Burkeite is a dominant phase (> 60%) in VG-3 water, with the presence of a significant halite quantity (> 35%) and a minor calcite quantity (2%). © 2019, International Association for Mathematical Geosciences.",
journal = "Natural Resources Research",
title = "Direct Formation of Burkeite in the Geothermal Waters at Vranjska Banja, Serbia",
volume = "28",
number = "4",
pages = "1259-1267",
doi = "10.1007/s11053-019-09455-y"
}

The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study

Mićović, Dragana; Pagnacco, Maja C.; Banković, Predrag T.; Maletaškić, Jelena; Matović, Branko; Đokić, Veljko R.; Stojmenović, Marija

(2019)

TY  - JOUR
AU  - Mićović, Dragana
AU  - Pagnacco, Maja C.
AU  - Banković, Predrag T.
AU  - Maletaškić, Jelena
AU  - Matović, Branko
AU  - Đokić, Veljko R.
AU  - Stojmenović, Marija
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8599
AB  - Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 °C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-δ and Ce1-xPrxO2-δ (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 °C), and their potential application as environmentally friendly pigments of desired colour is confirmed.
T2  - Processing and Application of Ceramics
T1  - The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study
VL  - 13
IS  - 3
SP  - 310
EP  - 321
DO  - 10.2298/PAC1903310M
ER  - 
@article{
author = "Mićović, Dragana and Pagnacco, Maja C. and Banković, Predrag T. and Maletaškić, Jelena and Matović, Branko and Đokić, Veljko R. and Stojmenović, Marija",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8599",
abstract = "Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 °C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-δ and Ce1-xPrxO2-δ (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 °C), and their potential application as environmentally friendly pigments of desired colour is confirmed.",
journal = "Processing and Application of Ceramics",
title = "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study",
volume = "13",
number = "3",
pages = "310-321",
doi = "10.2298/PAC1903310M"
}
1
2
2

Theoretical study of AlN mechanical behaviour under high pressure regime

Zagorac, Dejan; Zagorac, Jelena B.; Đukić, Miloš B.; Jordanov, Dragana; Matović, Branko

(2019)

TY  - JOUR
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena B.
AU  - Đukić, Miloš B.
AU  - Jordanov, Dragana
AU  - Matović, Branko
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8370
AB  - Aluminum nitride (AlN) is a very important industrial and technological material due to its properties, e.g. high melting point, thermal conductivity, electrical resistivity, mechanical strength, and corrosion resistance. This work represents detailed study of mechanical and elastic properties of AlN structures under compression. Theoretical modeling has been performed using quantum mechanical calculations and computed values were compared with the experimental results when available. Structural properties, volume change and strain (dilatation) under high pressure has been investigated for various AlN phases. Elastic constants Cij for wurtzite, sphalerite and rock salt structure were calculated under pressure. Important mechanical properties were investigated; bulk modulus B, shear modulus K, Young's modulus E, Vickers hardness Hv, anisotropy, stiffness, Poisson's ratio, brittleness/ductility, in order to investigate influence of pressure on wurtzite, sphalerite and rock salt based AlN materials. Detailed analysis of anisotropic mechanical properties under compression has been performed, as well as relationship between B, K, E and Hv, in order to offer novel technological and industrial applications of AlN. © 2019 Elsevier Ltd
T2  - Theoretical and Applied Fracture Mechanics
T1  - Theoretical study of AlN mechanical behaviour under high pressure regime
VL  - 103
SP  - 102289
DO  - 10.1016/j.tafmec.2019.102289
ER  - 
@article{
author = "Zagorac, Dejan and Zagorac, Jelena B. and Đukić, Miloš B. and Jordanov, Dragana and Matović, Branko",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8370",
abstract = "Aluminum nitride (AlN) is a very important industrial and technological material due to its properties, e.g. high melting point, thermal conductivity, electrical resistivity, mechanical strength, and corrosion resistance. This work represents detailed study of mechanical and elastic properties of AlN structures under compression. Theoretical modeling has been performed using quantum mechanical calculations and computed values were compared with the experimental results when available. Structural properties, volume change and strain (dilatation) under high pressure has been investigated for various AlN phases. Elastic constants Cij for wurtzite, sphalerite and rock salt structure were calculated under pressure. Important mechanical properties were investigated; bulk modulus B, shear modulus K, Young's modulus E, Vickers hardness Hv, anisotropy, stiffness, Poisson's ratio, brittleness/ductility, in order to investigate influence of pressure on wurtzite, sphalerite and rock salt based AlN materials. Detailed analysis of anisotropic mechanical properties under compression has been performed, as well as relationship between B, K, E and Hv, in order to offer novel technological and industrial applications of AlN. © 2019 Elsevier Ltd",
journal = "Theoretical and Applied Fracture Mechanics",
title = "Theoretical study of AlN mechanical behaviour under high pressure regime",
volume = "103",
pages = "102289",
doi = "10.1016/j.tafmec.2019.102289"
}
9
3
4
4

Bacterial cellulose-lignin composite hydrogel as a promising agent in chronic wound healing

Zmejkoski, Danica; Spasojević, Dragica; Orlovska, Irina V.; Kozyrovska, Natalia O.; Soković, Marina; Glamočlija, Jasmina; Dmitrović, Svetlana; Matović, Branko; Tasić, Nikola B.; Maksimović, Vuk M.; Sosnin, Mikhail; Radotić, Ksenija

(2018)

TY  - JOUR
AU  - Zmejkoski, Danica
AU  - Spasojević, Dragica
AU  - Orlovska, Irina V.
AU  - Kozyrovska, Natalia O.
AU  - Soković, Marina
AU  - Glamočlija, Jasmina
AU  - Dmitrović, Svetlana
AU  - Matović, Branko
AU  - Tasić, Nikola B.
AU  - Maksimović, Vuk M.
AU  - Sosnin, Mikhail
AU  - Radotić, Ksenija
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7769
AB  - Lignins and lignin-derived compounds are known to have antibacterial properties. The wound healing agents in the form of dressings produce faster skin repair and decrease pain in patients. In order to create an efficient antimicrobial agent in the form of dressing in the treatment of chronic wounds, a composite hydrogel of bacterial cellulose (BC) and dehydrogenative polymer of coniferyl alcohol (DHP), BC-DHP, was designed. Novel composite showed inhibitory or bactericidal effects against selected pathogenic bacteria, including clinically isolated ones. The highest release rate of DHP was in the first hour, while after 24 h there was still slow release of small amounts of DHP from BC-DHP during 72 h monitoring. High-performance liquid chromatography coupled with mass-spectrometry showed that BC-DHP releases DHP oligomers, which are proposed to be antimicrobially active DHP fractions. Scanning electron microscopy and atomic force microscopy micrographs proved a dose-dependent interaction of DHP with BC, which resulted in a decrease of the pore number and size in the cellulose membrane. The Fourier-transform infrared absorption spectra of the BC-DHP showed that DHP was partly bound to the BC matrix. The swelling and crystallinity degree were dose-dependent. All obtained results confirmed BC-DHP composite as a promising hydrogel for wounds healing.
T2  - International Journal of Biological Macromolecules
T1  - Bacterial cellulose-lignin composite hydrogel as a promising agent in chronic wound healing
VL  - 118
SP  - 494
EP  - 503
DO  - 10.1016/j.ijbiomac.2018.06.067
ER  - 
@article{
author = "Zmejkoski, Danica and Spasojević, Dragica and Orlovska, Irina V. and Kozyrovska, Natalia O. and Soković, Marina and Glamočlija, Jasmina and Dmitrović, Svetlana and Matović, Branko and Tasić, Nikola B. and Maksimović, Vuk M. and Sosnin, Mikhail and Radotić, Ksenija",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7769",
abstract = "Lignins and lignin-derived compounds are known to have antibacterial properties. The wound healing agents in the form of dressings produce faster skin repair and decrease pain in patients. In order to create an efficient antimicrobial agent in the form of dressing in the treatment of chronic wounds, a composite hydrogel of bacterial cellulose (BC) and dehydrogenative polymer of coniferyl alcohol (DHP), BC-DHP, was designed. Novel composite showed inhibitory or bactericidal effects against selected pathogenic bacteria, including clinically isolated ones. The highest release rate of DHP was in the first hour, while after 24 h there was still slow release of small amounts of DHP from BC-DHP during 72 h monitoring. High-performance liquid chromatography coupled with mass-spectrometry showed that BC-DHP releases DHP oligomers, which are proposed to be antimicrobially active DHP fractions. Scanning electron microscopy and atomic force microscopy micrographs proved a dose-dependent interaction of DHP with BC, which resulted in a decrease of the pore number and size in the cellulose membrane. The Fourier-transform infrared absorption spectra of the BC-DHP showed that DHP was partly bound to the BC matrix. The swelling and crystallinity degree were dose-dependent. All obtained results confirmed BC-DHP composite as a promising hydrogel for wounds healing.",
journal = "International Journal of Biological Macromolecules",
title = "Bacterial cellulose-lignin composite hydrogel as a promising agent in chronic wound healing",
volume = "118",
pages = "494-503",
doi = "10.1016/j.ijbiomac.2018.06.067"
}
3
26
25
28

Acid leaching of natural chrysotile asbestos to mesoporous silica fibers

Maletaškić, Jelena; Stanković, Nadežda; Daneu, Nina; Babić, Biljana M.; Stoiljković, Milovan; Yoshida, Katsumi; Matović, Branko

(2018)

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Stanković, Nadežda
AU  - Daneu, Nina
AU  - Babić, Biljana M.
AU  - Stoiljković, Milovan
AU  - Yoshida, Katsumi
AU  - Matović, Branko
PY  - 2018
UR  - http://link.springer.com/10.1007/s00269-017-0924-z
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7663
AB  - Nanofibrous silica with a high surface area was produced from chrysotile by the acid-leaching method. Natural mineral chrysotile asbestos from Stragari, Korlace in Serbia was used as the starting material. The fibers were modified by chemical treatment with 1 M HCl and the mineral dissolution was monitored by transmission electron microscopy, X-ray powder diffraction, inductively coupled plasma spectrometry and low-temperature nitrogen adsorption techniques to highlight the effects of the leaching process. The results showed that the applied concentration of acid solution and processing time of 4 h were sufficient to effectively remove the magnesium hydroxide layer and transform the crystal structure of the hazardous starting chrysotile to porous SiO2 nanofibers. With prolonged acid leaching, the specific surface area, S (BET), calculated by BET equation, was increased from 147 up to 435 m(2) g(- 1), with micropores representing a significant part of the specific surface.
T2  - Physics and Chemistry of Minerals
T1  - Acid leaching of natural chrysotile asbestos to mesoporous silica fibers
VL  - 45
IS  - 4
SP  - 343
EP  - 351
DO  - 10.1007/s00269-017-0924-z
ER  - 
@article{
author = "Maletaškić, Jelena and Stanković, Nadežda and Daneu, Nina and Babić, Biljana M. and Stoiljković, Milovan and Yoshida, Katsumi and Matović, Branko",
year = "2018",
url = "http://link.springer.com/10.1007/s00269-017-0924-z, http://vinar.vin.bg.ac.rs/handle/123456789/7663",
abstract = "Nanofibrous silica with a high surface area was produced from chrysotile by the acid-leaching method. Natural mineral chrysotile asbestos from Stragari, Korlace in Serbia was used as the starting material. The fibers were modified by chemical treatment with 1 M HCl and the mineral dissolution was monitored by transmission electron microscopy, X-ray powder diffraction, inductively coupled plasma spectrometry and low-temperature nitrogen adsorption techniques to highlight the effects of the leaching process. The results showed that the applied concentration of acid solution and processing time of 4 h were sufficient to effectively remove the magnesium hydroxide layer and transform the crystal structure of the hazardous starting chrysotile to porous SiO2 nanofibers. With prolonged acid leaching, the specific surface area, S (BET), calculated by BET equation, was increased from 147 up to 435 m(2) g(- 1), with micropores representing a significant part of the specific surface.",
journal = "Physics and Chemistry of Minerals",
title = "Acid leaching of natural chrysotile asbestos to mesoporous silica fibers",
volume = "45",
number = "4",
pages = "343-351",
doi = "10.1007/s00269-017-0924-z"
}
1
1
1

Synthesis, Calcination and Characterization of CoMoO4 Nanopowders by GNP Method

Rosić, Milena; Zagorac, Dejan; Čebela, Maria; Jordanov, Dragana; Zagorac, Jelena; Luković, Jelena; Zarubica, Aleksandra R.; Matović, Branko

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Rosić, Milena
AU  - Zagorac, Dejan
AU  - Čebela, Maria
AU  - Jordanov, Dragana
AU  - Zagorac, Jelena
AU  - Luković, Jelena
AU  - Zarubica, Aleksandra R.
AU  - Matović, Branko
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8738
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Synthesis, Calcination and Characterization of CoMoO4 Nanopowders by GNP Method
SP  - 192
EP  - 194
ER  - 
@conference{
author = "Rosić, Milena and Zagorac, Dejan and Čebela, Maria and Jordanov, Dragana and Zagorac, Jelena and Luković, Jelena and Zarubica, Aleksandra R. and Matović, Branko",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8738",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Synthesis, Calcination and Characterization of CoMoO4 Nanopowders by GNP Method",
pages = "192-194"
}

Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating

Milenković, Ivana; Radotić, Ksenija; Matović, Branko; Prekajski, Marija D.; Živković, Ljiljana; Jakovljević, Dragica; Gojgić-Cvijović, Gordana; Beškoski, Vladimir P.

(2018)

TY  - JOUR
AU  - Milenković, Ivana
AU  - Radotić, Ksenija
AU  - Matović, Branko
AU  - Prekajski, Marija D.
AU  - Živković, Ljiljana
AU  - Jakovljević, Dragica
AU  - Gojgić-Cvijović, Gordana
AU  - Beškoski, Vladimir P.
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51391800031M
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7764
AB  - Cerium oxide (CeO2) nanoparticles (CONPs) are interesting biomaterials with various applications in biomedicine, cosmetics and the pharmaceutical industry, but with limited practical application because of their low stability in aqueous media. The aim of this study was to obtain CONPs with increased stability by coating the particles. Microbial exopolysaccharides (levan, pullulan) and glucose were used to prepare CONPs under different synthesis conditions. Coating was attempted by adding the carbohydrates during (direct coating) or after (subsequent coating) the synthesis of CONPs. The obtained nanoparticles were characterized by X-Ray diffraction analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The suspension stability of the uncoated and coated CONPs in aqueous media was evaluated by measuring the hydrodynamic size, zeta potential and turbidity. The FT-IR spectra revealed the differences between coated CONPs and showed the success of subsequent coating with carbohydrates. Coating with carbohydrates improved the stability the CONP suspension by decreasing the size of aggregated particles. The suspensions of levan- and glucose-coated CONPs had the best stability. In this study, CONPs were prepared using non-toxic materials, which were completely environmentally friendly. The obtained results open new horizons for CONP synthesis, improving their biological applications.
T2  - Journal of the Serbian Chemical Society
T1  - Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating
VL  - 83
IS  - 6
SP  - 745
EP  - 757
DO  - 10.2298/JSC171205031M
ER  - 
@article{
author = "Milenković, Ivana and Radotić, Ksenija and Matović, Branko and Prekajski, Marija D. and Živković, Ljiljana and Jakovljević, Dragica and Gojgić-Cvijović, Gordana and Beškoski, Vladimir P.",
year = "2018",
url = "http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51391800031M, http://vinar.vin.bg.ac.rs/handle/123456789/7764",
abstract = "Cerium oxide (CeO2) nanoparticles (CONPs) are interesting biomaterials with various applications in biomedicine, cosmetics and the pharmaceutical industry, but with limited practical application because of their low stability in aqueous media. The aim of this study was to obtain CONPs with increased stability by coating the particles. Microbial exopolysaccharides (levan, pullulan) and glucose were used to prepare CONPs under different synthesis conditions. Coating was attempted by adding the carbohydrates during (direct coating) or after (subsequent coating) the synthesis of CONPs. The obtained nanoparticles were characterized by X-Ray diffraction analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The suspension stability of the uncoated and coated CONPs in aqueous media was evaluated by measuring the hydrodynamic size, zeta potential and turbidity. The FT-IR spectra revealed the differences between coated CONPs and showed the success of subsequent coating with carbohydrates. Coating with carbohydrates improved the stability the CONP suspension by decreasing the size of aggregated particles. The suspensions of levan- and glucose-coated CONPs had the best stability. In this study, CONPs were prepared using non-toxic materials, which were completely environmentally friendly. The obtained results open new horizons for CONP synthesis, improving their biological applications.",
journal = "Journal of the Serbian Chemical Society",
title = "Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating",
volume = "83",
number = "6",
pages = "745-757",
doi = "10.2298/JSC171205031M"
}
6
6
6

Structural and photocatalytic examination of CoMoO4 nanopowders synthesized by GNP method

Rosić, Milena; Zarubica, Aleksandra R.; Šaponjić, Aleksandra; Babić, Biljana M.; Zagorac, Jelena B.; Jordanov, Dragana; Matović, Branko

(2018)

TY  - JOUR
AU  - Rosić, Milena
AU  - Zarubica, Aleksandra R.
AU  - Šaponjić, Aleksandra
AU  - Babić, Biljana M.
AU  - Zagorac, Jelena B.
AU  - Jordanov, Dragana
AU  - Matović, Branko
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1876
AB  - The synthesis route by solution combustion, a glycine nitrate procedure (GNP) of CoMoO4 nanopowders by a glycine as a fuel and as a complexant was examined concerning the photocatalytic aspects and powder characteristics. The synthesized samples were investigated by differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Ultraviolet-Visible (UV/Vis) spectroscopy and nitrogen adsorption method. In this work, we presented a simple and effective method for controlling the composition and morphology of CoMoO4. A single-phase a and 13 crystalline form of CoMoO4 compound was confirmed by X-ray diffraction (XRD). The photocatalytic activity of CoMoO4 nanopowders was estimated by the photocatalytic degradation of crystal violet in aqueous solution. In addition, the obtained specific CoMoO4 nanopowder demonstrated acceptable specific surface area, which can be of particular importance for the photocatalytic processes.
T2  - Materials Research Bulletin
T1  - Structural and photocatalytic examination of CoMoO4 nanopowders synthesized by GNP method
VL  - 98
SP  - 111
EP  - 120
DO  - 10.1016/j.materresbull.2017.10.015
ER  - 
@article{
author = "Rosić, Milena and Zarubica, Aleksandra R. and Šaponjić, Aleksandra and Babić, Biljana M. and Zagorac, Jelena B. and Jordanov, Dragana and Matović, Branko",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1876",
abstract = "The synthesis route by solution combustion, a glycine nitrate procedure (GNP) of CoMoO4 nanopowders by a glycine as a fuel and as a complexant was examined concerning the photocatalytic aspects and powder characteristics. The synthesized samples were investigated by differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Ultraviolet-Visible (UV/Vis) spectroscopy and nitrogen adsorption method. In this work, we presented a simple and effective method for controlling the composition and morphology of CoMoO4. A single-phase a and 13 crystalline form of CoMoO4 compound was confirmed by X-ray diffraction (XRD). The photocatalytic activity of CoMoO4 nanopowders was estimated by the photocatalytic degradation of crystal violet in aqueous solution. In addition, the obtained specific CoMoO4 nanopowder demonstrated acceptable specific surface area, which can be of particular importance for the photocatalytic processes.",
journal = "Materials Research Bulletin",
title = "Structural and photocatalytic examination of CoMoO4 nanopowders synthesized by GNP method",
volume = "98",
pages = "111-120",
doi = "10.1016/j.materresbull.2017.10.015"
}
9
9
9

Spider silk as a template for obtaining magnesium oxide and magnesium hydroxide fibers

Dmitrović, Svetlana; Prekajski-Đorđević, Marija D.; Jokić, Bojan M.; Branković, Goran O.; Zarubica, Aleksandra R.; Žikić, Vladimir; Matović, Branko

(2018)

TY  - JOUR
AU  - Dmitrović, Svetlana
AU  - Prekajski-Đorđević, Marija D.
AU  - Jokić, Bojan M.
AU  - Branković, Goran O.
AU  - Zarubica, Aleksandra R.
AU  - Žikić, Vladimir
AU  - Matović, Branko
PY  - 2018
UR  - http://www.vbs.rs/scripts/cobiss?command=DISPLAY&base=70206&rid=512004702&fmt=11&lani=sc
UR  - https://www.ache-pub.org.rs/index.php/HemInd/article/view/107
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7616
AB  - Spider silk fibers, collected from Pholcus Phalangioides spider were used as a template for obtaining magnesium oxide (MgO, periclase) as well as magnesium hydroxide (Mg(OH)2, brucite) fibers. Magnesium oxide fibers were obtained in a simple manner by heat induced decomposition of magnesium salt (MgCl2) in the presence of the spider silk fibers, while magnesium hydroxidefibers were synthesized by hydration of MgO fibers at 50 °C, 70°C and 90 °C, for 48 and 96 h. According to Scanning electron microscopy (SEM), dimensions of spider silk fibers determined the dimension of synthesized MgO fibers, while for Mg(OH)2 fibers, the average diameter was increased with prolonging the hydration period. The surface of Mg(OH)2 fibers was noticed to be covered with brucite in a form of plates. X-ray diffraction (XRD) analysis showed that MgO fibers were single-phased (the pure magnesium oxide fibers were obtained), while Mg(OH)2 fibers were two- or single-phased brucite depending on incubation period, and/or incubation temperature.
AB  - Vlakna paukove mreže sakupljena od Pholcus phalangioides pauka korišćena su kao matrica za dobijanje vlakana magnezijum oksida (MgO, periklas) i magnezijum-hidroksida (Mg(OH)2, brucit). Vlakna magnezijum oksida jednostavno su dobijena termičkim razlaganjem soli magnezijuma (MgCl2) u prisustvu vlakana paukove mreže, dok su vlakna magnezijum hidroksida sintetisana hidratacijom MgO vlakana na temperaturama: 50, 70 i 90 °C u trajanju od 48 i 96 h. Na osnovu
rezultata skenirajuće elektronske mikroskopije (SEM), veličina sintetisanih MgO vlakana bila je određena dimenzijama vlakana pauka, dok je za Mg(OH)2 vlakna prosečan dijametar rastao sa produženjem perioda hidratacije. Na površini Mg(OH)2 vlakana uočeni su tabličasti kristali brucita. Difrakcija X zraka (XRD) pokazala je da su vlakna periklasa jednofazna (dobijen je čist magnezijum-oksid), dok su brucitna vlakna bila dvofazna ili jednofazna, u zavisnosti od inkubacionog perioda i/ili teperature na kojoj je vršena inkubacija.
T2  - Hemijska industrija
T1  - Spider silk as a template for obtaining magnesium oxide and magnesium hydroxide fibers
T1  - Sinteza vlakana magnezijum-oksida i magnezijum-hidroksida korišćenjem paukove mreže kao matrice
VL  - 72
IS  - 1
SP  - 23
EP  - 28
DO  - 10.2298/HEMIND170404018D
ER  - 
@article{
author = "Dmitrović, Svetlana and Prekajski-Đorđević, Marija D. and Jokić, Bojan M. and Branković, Goran O. and Zarubica, Aleksandra R. and Žikić, Vladimir and Matović, Branko",
year = "2018",
url = "http://www.vbs.rs/scripts/cobiss?command=DISPLAY&base=70206&rid=512004702&fmt=11&lani=sc, https://www.ache-pub.org.rs/index.php/HemInd/article/view/107, http://vinar.vin.bg.ac.rs/handle/123456789/7616",
abstract = "Spider silk fibers, collected from Pholcus Phalangioides spider were used as a template for obtaining magnesium oxide (MgO, periclase) as well as magnesium hydroxide (Mg(OH)2, brucite) fibers. Magnesium oxide fibers were obtained in a simple manner by heat induced decomposition of magnesium salt (MgCl2) in the presence of the spider silk fibers, while magnesium hydroxidefibers were synthesized by hydration of MgO fibers at 50 °C, 70°C and 90 °C, for 48 and 96 h. According to Scanning electron microscopy (SEM), dimensions of spider silk fibers determined the dimension of synthesized MgO fibers, while for Mg(OH)2 fibers, the average diameter was increased with prolonging the hydration period. The surface of Mg(OH)2 fibers was noticed to be covered with brucite in a form of plates. X-ray diffraction (XRD) analysis showed that MgO fibers were single-phased (the pure magnesium oxide fibers were obtained), while Mg(OH)2 fibers were two- or single-phased brucite depending on incubation period, and/or incubation temperature., Vlakna paukove mreže sakupljena od Pholcus phalangioides pauka korišćena su kao matrica za dobijanje vlakana magnezijum oksida (MgO, periklas) i magnezijum-hidroksida (Mg(OH)2, brucit). Vlakna magnezijum oksida jednostavno su dobijena termičkim razlaganjem soli magnezijuma (MgCl2) u prisustvu vlakana paukove mreže, dok su vlakna magnezijum hidroksida sintetisana hidratacijom MgO vlakana na temperaturama: 50, 70 i 90 °C u trajanju od 48 i 96 h. Na osnovu
rezultata skenirajuće elektronske mikroskopije (SEM), veličina sintetisanih MgO vlakana bila je određena dimenzijama vlakana pauka, dok je za Mg(OH)2 vlakna prosečan dijametar rastao sa produženjem perioda hidratacije. Na površini Mg(OH)2 vlakana uočeni su tabličasti kristali brucita. Difrakcija X zraka (XRD) pokazala je da su vlakna periklasa jednofazna (dobijen je čist magnezijum-oksid), dok su brucitna vlakna bila dvofazna ili jednofazna, u zavisnosti od inkubacionog perioda i/ili teperature na kojoj je vršena inkubacija.",
journal = "Hemijska industrija",
title = "Spider silk as a template for obtaining magnesium oxide and magnesium hydroxide fibers, Sinteza vlakana magnezijum-oksida i magnezijum-hidroksida korišćenjem paukove mreže kao matrice",
volume = "72",
number = "1",
pages = "23-28",
doi = "10.2298/HEMIND170404018D"
}

Theoretical investigation of structural, mechanical, elastic and vibrational properties of advanced materials under extreme conditions

Zagorac, Dejan; Zagorac, Jelena B.; Đukić, Miloš B.; Jordanov, Dragana; Rosić, Milena; Čebela, Maria; Luković, J; Maksimović, Vesna; Matović, Branko

(2018)

TY  - CONF
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena B.
AU  - Đukić, Miloš B.
AU  - Jordanov, Dragana
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Luković, J
AU  - Maksimović, Vesna
AU  - Matović, Branko
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S2452321618304530
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8165
AB  - One of the recent trends in materials science and technology is the research of the behavior of the materials under the extreme conditions both on the theoretical and experimental basis. There are limitations of the experimental methods, however, theoretical approach can be used as a supplement to the experimental results. As a consequence, in the last two decades a vast number of structure prediction calculations have been performed on chemical systems, focusing on the high-pressure and high temperature phases. In this work, we would like to present several computational studies and their connection to the actual synthesis routes: lead sulfide (PbS), barium sulfide (BaS), and aluminum nitride (AlN). The investigated compounds were calculated on ab initio level using the most advanced tools in quantum chemistry and computational material science including Hartree-Fock Theory, Density Functional Theory (DFT) and Hybrid (B3LYP) Approximation. Their structural, mechanical, elastic and vibrational properties have been investigated and in addition, we show structure candidates as the function of size, pressure and temperature and not previously observed in any of the investigated materials thus creating new possibilities for synthesis of advanced materials with improved physical, chemical, and/or mechanical properties. © 2018 The Authors.
C3  - Procedia Structural Integrity
T1  - Theoretical investigation of structural, mechanical, elastic and vibrational properties of advanced materials under extreme conditions
VL  - 13
SP  - 2005
EP  - 2010
DO  - 10.1016/j.prostr.2018.12.216
ER  - 
@conference{
author = "Zagorac, Dejan and Zagorac, Jelena B. and Đukić, Miloš B. and Jordanov, Dragana and Rosić, Milena and Čebela, Maria and Luković, J and Maksimović, Vesna and Matović, Branko",
year = "2018",
url = "https://linkinghub.elsevier.com/retrieve/pii/S2452321618304530, http://vinar.vin.bg.ac.rs/handle/123456789/8165",
abstract = "One of the recent trends in materials science and technology is the research of the behavior of the materials under the extreme conditions both on the theoretical and experimental basis. There are limitations of the experimental methods, however, theoretical approach can be used as a supplement to the experimental results. As a consequence, in the last two decades a vast number of structure prediction calculations have been performed on chemical systems, focusing on the high-pressure and high temperature phases. In this work, we would like to present several computational studies and their connection to the actual synthesis routes: lead sulfide (PbS), barium sulfide (BaS), and aluminum nitride (AlN). The investigated compounds were calculated on ab initio level using the most advanced tools in quantum chemistry and computational material science including Hartree-Fock Theory, Density Functional Theory (DFT) and Hybrid (B3LYP) Approximation. Their structural, mechanical, elastic and vibrational properties have been investigated and in addition, we show structure candidates as the function of size, pressure and temperature and not previously observed in any of the investigated materials thus creating new possibilities for synthesis of advanced materials with improved physical, chemical, and/or mechanical properties. © 2018 The Authors.",
journal = "Procedia Structural Integrity",
title = "Theoretical investigation of structural, mechanical, elastic and vibrational properties of advanced materials under extreme conditions",
volume = "13",
pages = "2005-2010",
doi = "10.1016/j.prostr.2018.12.216"
}
10
1
1
1

Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure

Čebela, Maria; Hercigonja, Radmila V.; Rosić, Milena; Zagorac, Dejan; Luković, Jelena M.; Zagorac, Jelena; Jordanov, Dragana; Matović, Branko

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Čebela, Maria
AU  - Hercigonja, Radmila V.
AU  - Rosić, Milena
AU  - Zagorac, Dejan
AU  - Luković, Jelena M.
AU  - Zagorac, Jelena
AU  - Jordanov, Dragana
AU  - Matović, Branko
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8732
AB  - Bismuth ferrite (BiFeO3) has recently drawn attention due to its outstanding multifunctional properties, as well as for being a lead-free ceramic material. In the current study, BiFeO3 nanoparticles were synthesized by strictly controlled hydrothermal process. High geometric molded particles of a small size and with high degree of purity (99.74 %) were obtained. We used nitrates of bismuth and iron as well as 8M potassium hydroxide as a basis for synthesis. The results of the X-ray diffraction study of the obtained polycrystalline material show single-phase bismuth ferrite that crystallizes with a rhombohedral lattice. Using the Rietveld method it has been determined that the particles of the synthesized powder are in a nanometric range with a particle size of about 30 nm. It was found that all reflec-tions of the obtained bismuth ferrite belong to the rhombohedral α-BiFeO3 phase which crystallizes in the space group R3c (No. 161). In addition, electronic and magnetic properties of BiFeO3 were investigated using combination of experimental and theoretical methods. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been pro-posed that Fe3+−OV defect complex could be created at elevated temperatures fol-lowed by formation of trivalent Fe ions, which intensely provide local 3d moments. The magnetic behavior of the synthesized material was studied by means of SQUID device and using a vibrating sample magnetometer (VSM). The temperature dependence of the magnetization shows the antiferomagnetic-paramagnetic phase transition at the temperature of TN = 220K, while below this temperature weak ferro-magnetic behavior has been detected. Theoretical studies were performed using a full potential linearized augmented plane-waves plus local orbital (FP(L)APW+lo) method, based on the density functional theory (DFT). In addition, a structure prediction has been performed and 11 additional BiFeO3 modifications have been pro-posed. In the next stage, an ab initio optimization of predicted structures has been performed and the structure of the γ-phase has been elucidated.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure
SP  - 99
EP  - 100
ER  - 
@conference{
author = "Čebela, Maria and Hercigonja, Radmila V. and Rosić, Milena and Zagorac, Dejan and Luković, Jelena M. and Zagorac, Jelena and Jordanov, Dragana and Matović, Branko",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8732",
abstract = "Bismuth ferrite (BiFeO3) has recently drawn attention due to its outstanding multifunctional properties, as well as for being a lead-free ceramic material. In the current study, BiFeO3 nanoparticles were synthesized by strictly controlled hydrothermal process. High geometric molded particles of a small size and with high degree of purity (99.74 %) were obtained. We used nitrates of bismuth and iron as well as 8M potassium hydroxide as a basis for synthesis. The results of the X-ray diffraction study of the obtained polycrystalline material show single-phase bismuth ferrite that crystallizes with a rhombohedral lattice. Using the Rietveld method it has been determined that the particles of the synthesized powder are in a nanometric range with a particle size of about 30 nm. It was found that all reflec-tions of the obtained bismuth ferrite belong to the rhombohedral α-BiFeO3 phase which crystallizes in the space group R3c (No. 161). In addition, electronic and magnetic properties of BiFeO3 were investigated using combination of experimental and theoretical methods. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been pro-posed that Fe3+−OV defect complex could be created at elevated temperatures fol-lowed by formation of trivalent Fe ions, which intensely provide local 3d moments. The magnetic behavior of the synthesized material was studied by means of SQUID device and using a vibrating sample magnetometer (VSM). The temperature dependence of the magnetization shows the antiferomagnetic-paramagnetic phase transition at the temperature of TN = 220K, while below this temperature weak ferro-magnetic behavior has been detected. Theoretical studies were performed using a full potential linearized augmented plane-waves plus local orbital (FP(L)APW+lo) method, based on the density functional theory (DFT). In addition, a structure prediction has been performed and 11 additional BiFeO3 modifications have been pro-posed. In the next stage, an ab initio optimization of predicted structures has been performed and the structure of the γ-phase has been elucidated.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure",
pages = "99-100"
}

Ab initio investigations of structural, electronic and mechanical properties of aluminum nitride at standard and elevated pressures

Zagorac, Jelena B.; Zagorac, Dejan; Jovanović, Dušica; Luković, Jelena M.; Matović, Branko

(2018)

TY  - JOUR
AU  - Zagorac, Jelena B.
AU  - Zagorac, Dejan
AU  - Jovanović, Dušica
AU  - Luković, Jelena M.
AU  - Matović, Branko
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0022369718313040
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7726
AB  - Ab initio calculations using hybrid B3LYP functional were performed in order to investigate structural, electronic and mechanical properties of aluminum nitride as function of pressure. Electronic properties of the experimentally observed aluminum nitride modifications at standard and high pressures have been investigated. Furthermore, mechanical properties for each of the predicted and experimentally observed AlN modifications have been investigated in order to get insight into the phase stability. In addition, ductility/brittleness relationship, character of the bonding, and the relationship between calculated hardness Hv, Young's modulus E, bulk modulus B, and shear modulus K have been investigated. In this way, we address new possibilities for improving the mechanical and elastic properties of AlN based ceramic materials, as well as possible band gap tuning, which might have applications in optoelectronic devices.
T2  - Journal of Physics and Chemistry of Solids
T1  - Ab initio investigations of structural, electronic and mechanical properties of aluminum nitride at standard and elevated pressures
VL  - 122
SP  - 94
EP  - 103
DO  - 10.1016/j.jpcs.2018.06.020
ER  - 
@article{
author = "Zagorac, Jelena B. and Zagorac, Dejan and Jovanović, Dušica and Luković, Jelena M. and Matović, Branko",
year = "2018",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0022369718313040, http://vinar.vin.bg.ac.rs/handle/123456789/7726",
abstract = "Ab initio calculations using hybrid B3LYP functional were performed in order to investigate structural, electronic and mechanical properties of aluminum nitride as function of pressure. Electronic properties of the experimentally observed aluminum nitride modifications at standard and high pressures have been investigated. Furthermore, mechanical properties for each of the predicted and experimentally observed AlN modifications have been investigated in order to get insight into the phase stability. In addition, ductility/brittleness relationship, character of the bonding, and the relationship between calculated hardness Hv, Young's modulus E, bulk modulus B, and shear modulus K have been investigated. In this way, we address new possibilities for improving the mechanical and elastic properties of AlN based ceramic materials, as well as possible band gap tuning, which might have applications in optoelectronic devices.",
journal = "Journal of Physics and Chemistry of Solids",
title = "Ab initio investigations of structural, electronic and mechanical properties of aluminum nitride at standard and elevated pressures",
volume = "122",
pages = "94-103",
doi = "10.1016/j.jpcs.2018.06.020"
}
8
9
9

ZnO/ZnS (hetero)structures: ab initio investigations of polytypic behavior of mixed ZnO and ZnS compounds

Zagorac, Dejan; Zagorac, Jelena B.; Schön, Johann Christian; Stojanović, Nemanja; Matović, Branko

(2018)

TY  - JOUR
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena B.
AU  - Schön, Johann Christian
AU  - Stojanović, Nemanja
AU  - Matović, Branko
PY  - 2018
UR  - http://scripts.iucr.org/cgi-bin/paper?S2052520618014099
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8063
AB  - The range of feasible ZnO/ZnS polytypes has been explored, predicting alternative structural arrangements compared with previously suggested or observed structural forms of ZnO/ZnS compounds, including bulk crystal structures, various nanostructures, heterostructures and heterojunctions. All calculations were performed ab initio using density functional theory–local density approximation and hybrid Heyd–Scuseria–Ernzerhof functionals. Specifically, pure ZnO and ZnS compounds and mixed ZnO 1– x S x compounds ( x = 0.20, 0.25, 0.33, 0.50, 0.60, 0.66 and 0.75) are investigated and a multitude of possible stable polytypes for ZnO/ZnS compounds creating new possibilities for synthesis of new materials with improved physical and chemical properties are identified.
T2  - Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials
T1  - ZnO/ZnS (hetero)structures: ab initio investigations of polytypic behavior of mixed ZnO and ZnS compounds
VL  - 74
IS  - 6
SP  - 628
EP  - 642
DO  - 10.1107/S2052520618014099
ER  - 
@article{
author = "Zagorac, Dejan and Zagorac, Jelena B. and Schön, Johann Christian and Stojanović, Nemanja and Matović, Branko",
year = "2018",
url = "http://scripts.iucr.org/cgi-bin/paper?S2052520618014099, http://vinar.vin.bg.ac.rs/handle/123456789/8063",
abstract = "The range of feasible ZnO/ZnS polytypes has been explored, predicting alternative structural arrangements compared with previously suggested or observed structural forms of ZnO/ZnS compounds, including bulk crystal structures, various nanostructures, heterostructures and heterojunctions. All calculations were performed ab initio using density functional theory–local density approximation and hybrid Heyd–Scuseria–Ernzerhof functionals. Specifically, pure ZnO and ZnS compounds and mixed ZnO 1– x S x compounds ( x = 0.20, 0.25, 0.33, 0.50, 0.60, 0.66 and 0.75) are investigated and a multitude of possible stable polytypes for ZnO/ZnS compounds creating new possibilities for synthesis of new materials with improved physical and chemical properties are identified.",
journal = "Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials",
title = "ZnO/ZnS (hetero)structures: ab initio investigations of polytypic behavior of mixed ZnO and ZnS compounds",
volume = "74",
number = "6",
pages = "628-642",
doi = "10.1107/S2052520618014099"
}
3
5
5
7

Structural, morphological and electrical properties of multi-doped calcium phosphate materials as solid electrolytes for intermediate temperature solid oxide fuel cells

Mirković, Miljana M.; Došen, Anja M.; Erić, Suzana; Stojmenović, Marija; Matović, Branko; Rosić, Aleksandra

(2018)

TY  - JOUR
AU  - Mirković, Miljana M.
AU  - Došen, Anja M.
AU  - Erić, Suzana
AU  - Stojmenović, Marija
AU  - Matović, Branko
AU  - Rosić, Aleksandra
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0350-820X1801095M
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7647
AB  - Modified solution precipitation method was used to prepare pure and doped Mg, Sr and Na hydroxyapatite type materials (CaP, CaMgP and CaSrNaP). Modification consisted of partial substitution of nitrates by acetate solution in order to achieve a more soluble and cost effective synthesis. The obtained samples were calcined at 400 degrees C (CaP400, CaMgP400 and CaSrNaP400). All powders were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). Calcined samples were densified at 1000 degrees C in an air for 3 h (CaP1000, CaMgP1000 and CaSrNaP1000). Sintered samples were characterized by XRPD, FTIR, SEM, EDS and complex impedance methods. The highest conductivity was found for the multi-doped phosphate sample (CaSrNaP1000) at 700 degrees C (1.90x10(-3)Omega(-1)cm(-1)). The corresponding activation energies of conductivity amounted to 0.31 eV in the temperature range 500-700 degrees C.
AB  - Метода таложне титрације коришћена је за добијање чистог и допираног хидроксиапатита јонима Sr, Mg и Na (CaP, CaMgP and CaSrNaP). За синтезу супституисаних хидроксиапатитских материјала коришћена је модификована таложна метода у односу на досада познате методе. Због боље растворљивости и знатно веће исплативости коришћени су раствори ацетата уместо нитрата. Синтетисани материјали су калцинисани на 400 °C, а затим окарактерисани
рендгенском дифракцијом, инфра црвеном спектроскопијом са Фуријеовом трансформацијом и скенирајућом електронском микроскопијом. Калцинисани узорци су синтеровани на 1000 °C са задржавањем од 3 сата у атмосфери ваздуха (CaP1000, CaMgP1000 and CaSrNaP1000). Синтеровани материјали окарактерисани су: рендгенском дифракцијом на поликристалном узорку, инфрацрвеном спекторскопијом са Фуријеовом трансформацијом и скенирајућом електронском микроскопијом са енергетско дисперзивном анализом као и методе комплексне импендансе. Највећа проводљивост добијена је на температури од 700 °C и износи 1.90×10-3 Ω-1cm-1 за мешовито допирани фосфатни материјал (CaSrNaP1000). Добијене активационе енергије проводљивости износе 0.31 eV у температурном опсегу од 500-700 ºC.
T2  - Science of Sintering
T1  - Structural, morphological and electrical properties of multi-doped calcium phosphate materials as solid electrolytes for intermediate temperature solid oxide fuel cells
VL  - 50
IS  - 1
SP  - 95
EP  - 109
DO  - 10.2298/SOS1801095M
ER  - 
@article{
author = "Mirković, Miljana M. and Došen, Anja M. and Erić, Suzana and Stojmenović, Marija and Matović, Branko and Rosić, Aleksandra",
year = "2018",
url = "http://www.doiserbia.nb.rs/Article.aspx?ID=0350-820X1801095M, http://vinar.vin.bg.ac.rs/handle/123456789/7647",
abstract = "Modified solution precipitation method was used to prepare pure and doped Mg, Sr and Na hydroxyapatite type materials (CaP, CaMgP and CaSrNaP). Modification consisted of partial substitution of nitrates by acetate solution in order to achieve a more soluble and cost effective synthesis. The obtained samples were calcined at 400 degrees C (CaP400, CaMgP400 and CaSrNaP400). All powders were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). Calcined samples were densified at 1000 degrees C in an air for 3 h (CaP1000, CaMgP1000 and CaSrNaP1000). Sintered samples were characterized by XRPD, FTIR, SEM, EDS and complex impedance methods. The highest conductivity was found for the multi-doped phosphate sample (CaSrNaP1000) at 700 degrees C (1.90x10(-3)Omega(-1)cm(-1)). The corresponding activation energies of conductivity amounted to 0.31 eV in the temperature range 500-700 degrees C., Метода таложне титрације коришћена је за добијање чистог и допираног хидроксиапатита јонима Sr, Mg и Na (CaP, CaMgP and CaSrNaP). За синтезу супституисаних хидроксиапатитских материјала коришћена је модификована таложна метода у односу на досада познате методе. Због боље растворљивости и знатно веће исплативости коришћени су раствори ацетата уместо нитрата. Синтетисани материјали су калцинисани на 400 °C, а затим окарактерисани
рендгенском дифракцијом, инфра црвеном спектроскопијом са Фуријеовом трансформацијом и скенирајућом електронском микроскопијом. Калцинисани узорци су синтеровани на 1000 °C са задржавањем од 3 сата у атмосфери ваздуха (CaP1000, CaMgP1000 and CaSrNaP1000). Синтеровани материјали окарактерисани су: рендгенском дифракцијом на поликристалном узорку, инфрацрвеном спекторскопијом са Фуријеовом трансформацијом и скенирајућом електронском микроскопијом са енергетско дисперзивном анализом као и методе комплексне импендансе. Највећа проводљивост добијена је на температури од 700 °C и износи 1.90×10-3 Ω-1cm-1 за мешовито допирани фосфатни материјал (CaSrNaP1000). Добијене активационе енергије проводљивости износе 0.31 eV у температурном опсегу од 500-700 ºC.",
journal = "Science of Sintering",
title = "Structural, morphological and electrical properties of multi-doped calcium phosphate materials as solid electrolytes for intermediate temperature solid oxide fuel cells",
volume = "50",
number = "1",
pages = "95-109",
doi = "10.2298/SOS1801095M"
}
3
4
4

Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature

Matović, Branko; Maletaškić, Jelena; Bučevac, Dušan; Zagorac, Jelena B.; Fajar, Muhammad; Yoshida, Katsumi; Yano, Toyohiko

(2018)

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Bučevac, Dušan
AU  - Zagorac, Jelena B.
AU  - Fajar, Muhammad
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884218315827
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7817
AB  - Pyrochlore compound (Gd2Hf2O7) powder was prepared by reacting gadolinium nitrate and hafnium chloride with NaOH during solid state displacement reaction at low temperature (SSDR). The SSDR process at room temperature initially yielded amorphous powders, which crystallized after subsequent calcination to form crystalline ceramics. The formation of crystalline Gd2Hf2O7took place at temperature as low as 600 °C. The phase evolution with thermal treatment as well as powder properties such as crystallite size, lattice strain and lattice parameter were studied by X-ray powder diffraction (XRPD) at room temperature. High-density ceramic pellets free of any additives were obtained after compaction of the obtained powders and subsequent sintering at 1600 °C for 4 h in air. Rietveld analysis of X-ray diffraction (XRD) pattern of sintered sample showed that the unit cell parameter of the obtained Gd2Hf2O7is 10.5501 (2) Å with x value = 0.345(2) in Wyckoff positions, indicating small distortion of octahedra. Hardness of the sintered samples was found to be 7.1 GPa. The thermal conductivity measurements performed in temperature range from room temperature to 1000 °C showed that thermal diffusivity of sintered samples was between 0.5 and 1 mm2/s whereas thermal conductivity was between 4 and 7 W/(m K).
T2  - Ceramics International
T1  - Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature
VL  - 44
IS  - 14
SP  - 16972
EP  - 16976
DO  - 10.1016/j.ceramint.2018.06.138
ER  - 
@article{
author = "Matović, Branko and Maletaškić, Jelena and Bučevac, Dušan and Zagorac, Jelena B. and Fajar, Muhammad and Yoshida, Katsumi and Yano, Toyohiko",
year = "2018",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0272884218315827, http://vinar.vin.bg.ac.rs/handle/123456789/7817",
abstract = "Pyrochlore compound (Gd2Hf2O7) powder was prepared by reacting gadolinium nitrate and hafnium chloride with NaOH during solid state displacement reaction at low temperature (SSDR). The SSDR process at room temperature initially yielded amorphous powders, which crystallized after subsequent calcination to form crystalline ceramics. The formation of crystalline Gd2Hf2O7took place at temperature as low as 600 °C. The phase evolution with thermal treatment as well as powder properties such as crystallite size, lattice strain and lattice parameter were studied by X-ray powder diffraction (XRPD) at room temperature. High-density ceramic pellets free of any additives were obtained after compaction of the obtained powders and subsequent sintering at 1600 °C for 4 h in air. Rietveld analysis of X-ray diffraction (XRD) pattern of sintered sample showed that the unit cell parameter of the obtained Gd2Hf2O7is 10.5501 (2) Å with x value = 0.345(2) in Wyckoff positions, indicating small distortion of octahedra. Hardness of the sintered samples was found to be 7.1 GPa. The thermal conductivity measurements performed in temperature range from room temperature to 1000 °C showed that thermal diffusivity of sintered samples was between 0.5 and 1 mm2/s whereas thermal conductivity was between 4 and 7 W/(m K).",
journal = "Ceramics International",
title = "Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature",
volume = "44",
number = "14",
pages = "16972-16976",
doi = "10.1016/j.ceramint.2018.06.138"
}
7
7
7

Influence of laser-induced heating on MnO nanoparticles

Hadžić, Branka B.; Vasić, Borislav Z.; Matović, Branko; Kuryliszyn-Kudelska, Izabela; Dobrowolski, Witold D.; Romčević, Maja J.; Romčević, Nebojša Ž.

(2018)

TY  - JOUR
AU  - Hadžić, Branka B.
AU  - Vasić, Borislav Z.
AU  - Matović, Branko
AU  - Kuryliszyn-Kudelska, Izabela
AU  - Dobrowolski, Witold D.
AU  - Romčević, Maja J.
AU  - Romčević, Nebojša Ž.
PY  - 2018
UR  - http://doi.wiley.com/10.1002/jrs.5358
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7778
AB  - The phase changes of MnO nanoparticles under laser-induced heating have been studied. Previous confirmation of the existence of MnO phase was based on the X-ray diffraction measurements. Here, we report the experimental spectra of nonresonant Raman scattering in the range between 100 and 1,600cm(-1), for a sample irradiated with 8 different laser powers. The laser-induced heating has produced change in existing phases in sample, destruction of MnO phase, and creation of MnO2, Mn3O4, and MnOOH phases along with formation of Mn2+ on the sample surface. These phase changes have been confirmed by X-ray diffraction and atomic force microscopy measurements.
T2  - Journal of Raman Spectroscopy
T1  - Influence of laser-induced heating on MnO nanoparticles
VL  - 49
IS  - 5
SP  - 817
EP  - 821
DO  - 10.1002/jrs.5358
ER  - 
@article{
author = "Hadžić, Branka B. and Vasić, Borislav Z. and Matović, Branko and Kuryliszyn-Kudelska, Izabela and Dobrowolski, Witold D. and Romčević, Maja J. and Romčević, Nebojša Ž.",
year = "2018",
url = "http://doi.wiley.com/10.1002/jrs.5358, http://vinar.vin.bg.ac.rs/handle/123456789/7778",
abstract = "The phase changes of MnO nanoparticles under laser-induced heating have been studied. Previous confirmation of the existence of MnO phase was based on the X-ray diffraction measurements. Here, we report the experimental spectra of nonresonant Raman scattering in the range between 100 and 1,600cm(-1), for a sample irradiated with 8 different laser powers. The laser-induced heating has produced change in existing phases in sample, destruction of MnO phase, and creation of MnO2, Mn3O4, and MnOOH phases along with formation of Mn2+ on the sample surface. These phase changes have been confirmed by X-ray diffraction and atomic force microscopy measurements.",
journal = "Journal of Raman Spectroscopy",
title = "Influence of laser-induced heating on MnO nanoparticles",
volume = "49",
number = "5",
pages = "817-821",
doi = "10.1002/jrs.5358"
}
5
3
4

In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite

Prekajski-Đorđević, Marija D.; Maletaškić, Jelena; Stanković, Nadežda; Babić, Biljana M.; Yoshida, Katsumi; Yano, Toyohiko; Matović, Branko

(2018)

TY  - JOUR
AU  - Prekajski-Đorđević, Marija D.
AU  - Maletaškić, Jelena
AU  - Stanković, Nadežda
AU  - Babić, Biljana M.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
AU  - Matović, Branko
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1874
AB  - Hydroxyapatite was used as the inert matrix for in-situ immobilization of strontium (Sr) radioactive isotopes at room temperature. A nano-emulsification method was applied to synthesize Sr-substituted calcium hydroxyapatite (Ca1-xSrx)PO4)(6)(OH)(2). The concentration of incorporated Sr was in the range of 0 LT = x LT = 1. Immobilization of Sr was evaluated using a stable isotope instead of radioactive isotope. The effect of strontium concentration on the crystal structure was studied and the results have showed that in the whole concentration range, Sr forms solid solutions with the host hydroxyapatite crystal structure. Powders comprised of nanometre sized particles were obtained and their properties, such as crystallite and particle size, changes in lattice parameters as function of dopant content and thermal stability, were further examined. It was found that the crystal structure of obtained powders is thermally stable at high temperatures. No secondary phases were formed in as-prepared powders or during calcination. The results in this study showed that nano-emulsion strategy provides a simple pathway for synthesis of a single-phase Sr-substituted hydroxyapatite, which can be used for immobilization of Sr radioactive isotopes.
T2  - Ceramics International
T1  - In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite
VL  - 44
IS  - 2
SP  - 1771
EP  - 1777
DO  - 10.1016/j.ceramint.2017.10.110
ER  - 
@article{
author = "Prekajski-Đorđević, Marija D. and Maletaškić, Jelena and Stanković, Nadežda and Babić, Biljana M. and Yoshida, Katsumi and Yano, Toyohiko and Matović, Branko",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1874",
abstract = "Hydroxyapatite was used as the inert matrix for in-situ immobilization of strontium (Sr) radioactive isotopes at room temperature. A nano-emulsification method was applied to synthesize Sr-substituted calcium hydroxyapatite (Ca1-xSrx)PO4)(6)(OH)(2). The concentration of incorporated Sr was in the range of 0 LT = x LT = 1. Immobilization of Sr was evaluated using a stable isotope instead of radioactive isotope. The effect of strontium concentration on the crystal structure was studied and the results have showed that in the whole concentration range, Sr forms solid solutions with the host hydroxyapatite crystal structure. Powders comprised of nanometre sized particles were obtained and their properties, such as crystallite and particle size, changes in lattice parameters as function of dopant content and thermal stability, were further examined. It was found that the crystal structure of obtained powders is thermally stable at high temperatures. No secondary phases were formed in as-prepared powders or during calcination. The results in this study showed that nano-emulsion strategy provides a simple pathway for synthesis of a single-phase Sr-substituted hydroxyapatite, which can be used for immobilization of Sr radioactive isotopes.",
journal = "Ceramics International",
title = "In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite",
volume = "44",
number = "2",
pages = "1771-1777",
doi = "10.1016/j.ceramint.2017.10.110"
}
6
6
6