Directed synthesis, structure and properties of multifunctional materials

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Directed synthesis, structure and properties of multifunctional materials (en)
Усмерена синтеза, структура и својства мултифункционалних материјала (sr)
Usmerena sinteza, struktura i svojstva multifunkcionalnih materijala (sr_RS)
Authors

Publications

The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers

Mitić, Vojislav V.; Lazović, Goran; Lu, Chun-An; Paunović, Vesna; Radović, Ivana; Stajčić, Aleksandar; Vlahović, Branislav

(2020)

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Lu, Chun-An
AU  - Paunović, Vesna
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9010
AB  - The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.
T2  - Applied Sciences (Switzerland)
T1  - The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers
VL  - 10
IS  - 10
SP  - 3485
DO  - 10.3390/app10103485
ER  - 
@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Lu, Chun-An and Paunović, Vesna and Radović, Ivana and Stajčić, Aleksandar and Vlahović, Branislav",
year = "2020",
abstract = "The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.",
journal = "Applied Sciences (Switzerland)",
title = "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers",
volume = "10",
number = "10",
pages = "3485",
doi = "10.3390/app10103485"
}
Mitić, V. V., Lazović, G., Lu, C., Paunović, V., Radović, I., Stajčić, A.,& Vlahović, B.. (2020). The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences (Switzerland), 10(10), 3485.
https://doi.org/10.3390/app10103485
Mitić VV, Lazović G, Lu C, Paunović V, Radović I, Stajčić A, Vlahović B. The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences (Switzerland). 2020;10(10):3485.
doi:10.3390/app10103485 .
Mitić, Vojislav V., Lazović, Goran, Lu, Chun-An, Paunović, Vesna, Radović, Ivana, Stajčić, Aleksandar, Vlahović, Branislav, "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers" in Applied Sciences (Switzerland), 10, no. 10 (2020):3485,
https://doi.org/10.3390/app10103485 . .
2
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Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel

Dostanić, Jasmina; Lončarević, Davor; Pavlović, Vladimir B.; Papan, Jelena; Nedeljković, Jovan

(2019)

TY  - JOUR
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Pavlović, Vladimir B.
AU  - Papan, Jelena
AU  - Nedeljković, Jovan
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884219317018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8354
AB  - Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a function of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel
VL  - 45
IS  - 15
SP  - 19447
EP  - 19455
DO  - 10.1016/j.ceramint.2019.06.200
ER  - 
@article{
author = "Dostanić, Jasmina and Lončarević, Davor and Pavlović, Vladimir B. and Papan, Jelena and Nedeljković, Jovan",
year = "2019",
abstract = "Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a function of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel",
volume = "45",
number = "15",
pages = "19447-19455",
doi = "10.1016/j.ceramint.2019.06.200"
}
Dostanić, J., Lončarević, D., Pavlović, V. B., Papan, J.,& Nedeljković, J.. (2019). Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel. in Ceramics International, 45(15), 19447-19455.
https://doi.org/10.1016/j.ceramint.2019.06.200
Dostanić J, Lončarević D, Pavlović VB, Papan J, Nedeljković J. Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel. in Ceramics International. 2019;45(15):19447-19455.
doi:10.1016/j.ceramint.2019.06.200 .
Dostanić, Jasmina, Lončarević, Davor, Pavlović, Vladimir B., Papan, Jelena, Nedeljković, Jovan, "Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel" in Ceramics International, 45, no. 15 (2019):19447-19455,
https://doi.org/10.1016/j.ceramint.2019.06.200 . .
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4
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Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping

Vujančević, Jelena; Andričević, Pavao; Bjelajac, Anđelika; Đokić, Veljko R.; Popović, Maja; Rakočević, Zlatko Lj.; Horvath, Endre; Kollar, Marton; Nafradi, Balint; Schiller, Andreas; Domanski, Konrad; Forro, Laszlo; Pavlović, Vera P.; Janaćković, Đorđe T.

(2019)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko R.
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe T.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8538
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
VL  - 45
IS  - 8
SP  - 10013
EP  - 10020
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 
@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko R. and Popović, Maja and Rakočević, Zlatko Lj. and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe T.",
year = "2019",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
volume = "45",
number = "8",
pages = "10013-10020",
doi = "10.1016/j.ceramint.2019.02.045"
}
Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V. R., Popović, M., Rakočević, Z. Lj., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ. T.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International, 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
Vujančević J, Andričević P, Bjelajac A, Đokić VR, Popović M, Rakočević ZL, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković ĐT. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045 .
Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko R., Popović, Maja, Rakočević, Zlatko Lj., Horvath, Endre, Kollar, Marton, Nafradi, Balint, Schiller, Andreas, Domanski, Konrad, Forro, Laszlo, Pavlović, Vera P., Janaćković, Đorđe T., "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 . .
3
2
1

Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping

Vujančević, Jelena; Andričević, Pavao; Bjelajac, Anđelika; Đokić, Veljko R.; Popović, Maja; Rakočević, Zlatko Lj.; Horvath, Endre; Kollar, Marton; Nafradi, Balint; Schiller, Andreas; Domanski, Konrad; Forro, Laszlo; Pavlović, Vera P.; Janaćković, Đorđe T.

(2019)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko R.
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe T.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8539
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
VL  - 45
IS  - 8
SP  - 10013
EP  - 10020
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 
@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko R. and Popović, Maja and Rakočević, Zlatko Lj. and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe T.",
year = "2019",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
volume = "45",
number = "8",
pages = "10013-10020",
doi = "10.1016/j.ceramint.2019.02.045"
}
Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V. R., Popović, M., Rakočević, Z. Lj., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ. T.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International, 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
Vujančević J, Andričević P, Bjelajac A, Đokić VR, Popović M, Rakočević ZL, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković ĐT. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045 .
Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko R., Popović, Maja, Rakočević, Zlatko Lj., Horvath, Endre, Kollar, Marton, Nafradi, Balint, Schiller, Andreas, Domanski, Konrad, Forro, Laszlo, Pavlović, Vera P., Janaćković, Đorđe T., "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 . .
3
2
1

Polyamidoamine as a clay modifier and curing agent in preparation of epoxy nanocomposites

Tomić, Miloš; Dunjić, Branko; Nikolić, Marija S.; Trifković, Kata; Stanković, Nadežda; Pavlović, Vladimir B.; Bajat, Jelena B.; Đonlagić, Jasna A.

(2019)

TY  - JOUR
AU  - Tomić, Miloš
AU  - Dunjić, Branko
AU  - Nikolić, Marija S.
AU  - Trifković, Kata
AU  - Stanković, Nadežda
AU  - Pavlović, Vladimir B.
AU  - Bajat, Jelena B.
AU  - Đonlagić, Jasna A.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0300944018312487
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8076
AB  - In the present study the commercial multifunctional fatty acid polyamidoamine (PAA) was for the first time simultaneously applied as a curing agent and clay modifier for epoxy/clay nanocomposites (NC) based on diglycidyl ether of bisphenol A. The montmorillonite (Cloisite®Na + ) was modified with different quantities of partially and fully protonated polyamidoamine. The NCs with 0.5 wt% novel organoclay were prepared by solution intercalation method. The major aims of this paper are investigations of the effects of the composition of PAA modified clays on structure, mechanical, barrier properties and corrosion stability on steel substrates of NCs were studied. The thermogravimetric, flame photometry and X-ray diffraction analyses confirmed the efficient modification of clay surface with polyamidoamine, predominantly located within layers. The NCs exhibited an intercalated/exfoliated morphology and the presence of free amino groups and increased content of modifier facilitated dispersion of clay particles within the polymer matrix, as shown by electron microscopy techniques (SEM, TEM). Under an optimized loading of PAA (molar quantity of total amino groups per clay cation exchange capacity of 1.75), the layers in stacks were separated by 5.0 nm and high number of individual layers was present in NC. Clay modified by PAA with free amino groups showed increased storage modulus in the rubbery state, glass transition temperature of NCs, while dumping factor was decreased. The tensile test confirmed that introduction of flexible modifier on the epoxy/clay interface lead to increase in the ultimate tensile strenght and elongation at break by 31% and toughness up to 83%. The electrochemical impedance spectroscopy and permeability tests proved the pronounced barrier effect of clay particles against corrosive species and water vapor when high dispersion degree of clay in NC was achieved. © 2019 Elsevier B.V.
T2  - Progress in Organic Coatings
T1  - Polyamidoamine as a clay modifier and curing agent in preparation of epoxy nanocomposites
VL  - 131
SP  - 311
EP  - 321
DO  - 10.1016/j.porgcoat.2019.02.037
ER  - 
@article{
author = "Tomić, Miloš and Dunjić, Branko and Nikolić, Marija S. and Trifković, Kata and Stanković, Nadežda and Pavlović, Vladimir B. and Bajat, Jelena B. and Đonlagić, Jasna A.",
year = "2019",
abstract = "In the present study the commercial multifunctional fatty acid polyamidoamine (PAA) was for the first time simultaneously applied as a curing agent and clay modifier for epoxy/clay nanocomposites (NC) based on diglycidyl ether of bisphenol A. The montmorillonite (Cloisite®Na + ) was modified with different quantities of partially and fully protonated polyamidoamine. The NCs with 0.5 wt% novel organoclay were prepared by solution intercalation method. The major aims of this paper are investigations of the effects of the composition of PAA modified clays on structure, mechanical, barrier properties and corrosion stability on steel substrates of NCs were studied. The thermogravimetric, flame photometry and X-ray diffraction analyses confirmed the efficient modification of clay surface with polyamidoamine, predominantly located within layers. The NCs exhibited an intercalated/exfoliated morphology and the presence of free amino groups and increased content of modifier facilitated dispersion of clay particles within the polymer matrix, as shown by electron microscopy techniques (SEM, TEM). Under an optimized loading of PAA (molar quantity of total amino groups per clay cation exchange capacity of 1.75), the layers in stacks were separated by 5.0 nm and high number of individual layers was present in NC. Clay modified by PAA with free amino groups showed increased storage modulus in the rubbery state, glass transition temperature of NCs, while dumping factor was decreased. The tensile test confirmed that introduction of flexible modifier on the epoxy/clay interface lead to increase in the ultimate tensile strenght and elongation at break by 31% and toughness up to 83%. The electrochemical impedance spectroscopy and permeability tests proved the pronounced barrier effect of clay particles against corrosive species and water vapor when high dispersion degree of clay in NC was achieved. © 2019 Elsevier B.V.",
journal = "Progress in Organic Coatings",
title = "Polyamidoamine as a clay modifier and curing agent in preparation of epoxy nanocomposites",
volume = "131",
pages = "311-321",
doi = "10.1016/j.porgcoat.2019.02.037"
}
Tomić, M., Dunjić, B., Nikolić, M. S., Trifković, K., Stanković, N., Pavlović, V. B., Bajat, J. B.,& Đonlagić, J. A.. (2019). Polyamidoamine as a clay modifier and curing agent in preparation of epoxy nanocomposites. in Progress in Organic Coatings, 131, 311-321.
https://doi.org/10.1016/j.porgcoat.2019.02.037
Tomić M, Dunjić B, Nikolić MS, Trifković K, Stanković N, Pavlović VB, Bajat JB, Đonlagić JA. Polyamidoamine as a clay modifier and curing agent in preparation of epoxy nanocomposites. in Progress in Organic Coatings. 2019;131:311-321.
doi:10.1016/j.porgcoat.2019.02.037 .
Tomić, Miloš, Dunjić, Branko, Nikolić, Marija S., Trifković, Kata, Stanković, Nadežda, Pavlović, Vladimir B., Bajat, Jelena B., Đonlagić, Jasna A., "Polyamidoamine as a clay modifier and curing agent in preparation of epoxy nanocomposites" in Progress in Organic Coatings, 131 (2019):311-321,
https://doi.org/10.1016/j.porgcoat.2019.02.037 . .
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5
6

Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal

Rusmirović, Jelena D.; Obradović, Nina; Perendija, Jovana; Umićević, Ana; Kapidžić, Ana; Vlahović, Branislav; Pavlović, Vera P.; Marinković, Aleksandar D.; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Obradović, Nina
AU  - Perendija, Jovana
AU  - Umićević, Ana
AU  - Kapidžić, Ana
AU  - Vlahović, Branislav
AU  - Pavlović, Vera P.
AU  - Marinković, Aleksandar D.
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8096
AB  - Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-?-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g -1 for WL-?-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g -1 for Cd 2+ , Ni 2+ , phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-?-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-?-APS. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Environmental Science and Pollution Research
T1  - Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal
VL  - 26
IS  - 12
SP  - 12379
EP  - 12398
DO  - 10.1007/s11356-019-04625-0
ER  - 
@article{
author = "Rusmirović, Jelena D. and Obradović, Nina and Perendija, Jovana and Umićević, Ana and Kapidžić, Ana and Vlahović, Branislav and Pavlović, Vera P. and Marinković, Aleksandar D. and Pavlović, Vladimir B.",
year = "2019",
abstract = "Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-?-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g -1 for WL-?-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g -1 for Cd 2+ , Ni 2+ , phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-?-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-?-APS. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Environmental Science and Pollution Research",
title = "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal",
volume = "26",
number = "12",
pages = "12379-12398",
doi = "10.1007/s11356-019-04625-0"
}
Rusmirović, J. D., Obradović, N., Perendija, J., Umićević, A., Kapidžić, A., Vlahović, B., Pavlović, V. P., Marinković, A. D.,& Pavlović, V. B.. (2019). Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research, 26(12), 12379-12398.
https://doi.org/10.1007/s11356-019-04625-0
Rusmirović JD, Obradović N, Perendija J, Umićević A, Kapidžić A, Vlahović B, Pavlović VP, Marinković AD, Pavlović VB. Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research. 2019;26(12):12379-12398.
doi:10.1007/s11356-019-04625-0 .
Rusmirović, Jelena D., Obradović, Nina, Perendija, Jovana, Umićević, Ana, Kapidžić, Ana, Vlahović, Branislav, Pavlović, Vera P., Marinković, Aleksandar D., Pavlović, Vladimir B., "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal" in Environmental Science and Pollution Research, 26, no. 12 (2019):12379-12398,
https://doi.org/10.1007/s11356-019-04625-0 . .
1
4
6
6

Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal

Rusmirović, Jelena D.; Obradović, Nina; Perendija, Jovana; Umićević, Ana; Kapidžić, Ana; Vlahović, Branislav; Pavlović, Vera P.; Marinković, Aleksandar D.; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Obradović, Nina
AU  - Perendija, Jovana
AU  - Umićević, Ana
AU  - Kapidžić, Ana
AU  - Vlahović, Branislav
AU  - Pavlović, Vera P.
AU  - Marinković, Aleksandar D.
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8101
AB  - Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g−1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g−1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.
T2  - Environmental Science and Pollution Research
T1  - Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal
VL  - 26
IS  - 12
SP  - 12379
EP  - 12398
DO  - 10.1007/s11356-019-04625-0
ER  - 
@article{
author = "Rusmirović, Jelena D. and Obradović, Nina and Perendija, Jovana and Umićević, Ana and Kapidžić, Ana and Vlahović, Branislav and Pavlović, Vera P. and Marinković, Aleksandar D. and Pavlović, Vladimir B.",
year = "2019",
abstract = "Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g−1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g−1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.",
journal = "Environmental Science and Pollution Research",
title = "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal",
volume = "26",
number = "12",
pages = "12379-12398",
doi = "10.1007/s11356-019-04625-0"
}
Rusmirović, J. D., Obradović, N., Perendija, J., Umićević, A., Kapidžić, A., Vlahović, B., Pavlović, V. P., Marinković, A. D.,& Pavlović, V. B.. (2019). Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research, 26(12), 12379-12398.
https://doi.org/10.1007/s11356-019-04625-0
Rusmirović JD, Obradović N, Perendija J, Umićević A, Kapidžić A, Vlahović B, Pavlović VP, Marinković AD, Pavlović VB. Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research. 2019;26(12):12379-12398.
doi:10.1007/s11356-019-04625-0 .
Rusmirović, Jelena D., Obradović, Nina, Perendija, Jovana, Umićević, Ana, Kapidžić, Ana, Vlahović, Branislav, Pavlović, Vera P., Marinković, Aleksandar D., Pavlović, Vladimir B., "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal" in Environmental Science and Pollution Research, 26, no. 12 (2019):12379-12398,
https://doi.org/10.1007/s11356-019-04625-0 . .
1
4
6
6

Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure

Filipović, Suzana; Pavlović, Vera P.; Mitrić, Miodrag; Lević, Steva; Mitrović, Nebojša; Maričić, Aleksa; Vlahović, Branislav; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Pavlović, Vera P.
AU  - Mitrić, Miodrag
AU  - Lević, Steva
AU  - Mitrović, Nebojša
AU  - Maričić, Aleksa
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://doi.org/10.1007/s40145-018-0301-5
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8103
AB  - Multiferroic materials attracted a lot of attention in recent years because of their significant scientific interest and technological applications. The multiferroic core/shell powders have a better connectivity between the phases, resulting in superior dielectric and magneto electric properties. In this study, the influence of preparation condition on structure and properties of BaTiO3/α-Fe2O3 core/shell composite materials was examined. The five samples were obtained by varying synthesis conditions, such as synthesized method (co-precipitation and sonochemical method) and pH values of solution. XRD and Raman spectroscopy analyses were performed in order to determine phase composition and structural changes within samples. Morphology modifications were examined by SEM and EDS analyses. Finally, effect of structural and microstructural changes on magnetic and electrical properties was detected and explained.
T2  - Journal of Advanced Ceramics
T1  - Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure
VL  - 8
IS  - 1
SP  - 133
EP  - 147
DO  - 10.1007/s40145-018-0301-5
ER  - 
@article{
author = "Filipović, Suzana and Pavlović, Vera P. and Mitrić, Miodrag and Lević, Steva and Mitrović, Nebojša and Maričić, Aleksa and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Multiferroic materials attracted a lot of attention in recent years because of their significant scientific interest and technological applications. The multiferroic core/shell powders have a better connectivity between the phases, resulting in superior dielectric and magneto electric properties. In this study, the influence of preparation condition on structure and properties of BaTiO3/α-Fe2O3 core/shell composite materials was examined. The five samples were obtained by varying synthesis conditions, such as synthesized method (co-precipitation and sonochemical method) and pH values of solution. XRD and Raman spectroscopy analyses were performed in order to determine phase composition and structural changes within samples. Morphology modifications were examined by SEM and EDS analyses. Finally, effect of structural and microstructural changes on magnetic and electrical properties was detected and explained.",
journal = "Journal of Advanced Ceramics",
title = "Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure",
volume = "8",
number = "1",
pages = "133-147",
doi = "10.1007/s40145-018-0301-5"
}
Filipović, S., Pavlović, V. P., Mitrić, M., Lević, S., Mitrović, N., Maričić, A., Vlahović, B.,& Pavlović, V. B.. (2019). Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure. in Journal of Advanced Ceramics, 8(1), 133-147.
https://doi.org/10.1007/s40145-018-0301-5
Filipović S, Pavlović VP, Mitrić M, Lević S, Mitrović N, Maričić A, Vlahović B, Pavlović VB. Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure. in Journal of Advanced Ceramics. 2019;8(1):133-147.
doi:10.1007/s40145-018-0301-5 .
Filipović, Suzana, Pavlović, Vera P., Mitrić, Miodrag, Lević, Steva, Mitrović, Nebojša, Maričić, Aleksa, Vlahović, Branislav, Pavlović, Vladimir B., "Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure" in Journal of Advanced Ceramics, 8, no. 1 (2019):133-147,
https://doi.org/10.1007/s40145-018-0301-5 . .
1
6
7
8

Structure and enhanced antimicrobial activity of mechanically activated nano TiO2

Pavlović, Vera P.; Vujančević, Jelena; Mašković, Pavle Z.; Ćirković, Jovana; Papan, Jelena; Kosanović, Darko; Dramićanin, Miroslav; Petrović, Predrag B.; Vlahović, Branislav; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Mašković, Pavle Z.
AU  - Ćirković, Jovana
AU  - Papan, Jelena
AU  - Kosanović, Darko
AU  - Dramićanin, Miroslav
AU  - Petrović, Predrag B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8380
AB  - Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.
T2  - Journal of the American Ceramic Society
T1  - Structure and enhanced antimicrobial activity of mechanically activated nano TiO2
VL  - 102
IS  - 12
SP  - 7735
EP  - 7745
DO  - 10.1111/jace.16668
ER  - 
@article{
author = "Pavlović, Vera P. and Vujančević, Jelena and Mašković, Pavle Z. and Ćirković, Jovana and Papan, Jelena and Kosanović, Darko and Dramićanin, Miroslav and Petrović, Predrag B. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.",
journal = "Journal of the American Ceramic Society",
title = "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2",
volume = "102",
number = "12",
pages = "7735-7745",
doi = "10.1111/jace.16668"
}
Pavlović, V. P., Vujančević, J., Mašković, P. Z., Ćirković, J., Papan, J., Kosanović, D., Dramićanin, M., Petrović, P. B., Vlahović, B.,& Pavlović, V. B.. (2019). Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society, 102(12), 7735-7745.
https://doi.org/10.1111/jace.16668
Pavlović VP, Vujančević J, Mašković PZ, Ćirković J, Papan J, Kosanović D, Dramićanin M, Petrović PB, Vlahović B, Pavlović VB. Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society. 2019;102(12):7735-7745.
doi:10.1111/jace.16668 .
Pavlović, Vera P., Vujančević, Jelena, Mašković, Pavle Z., Ćirković, Jovana, Papan, Jelena, Kosanović, Darko, Dramićanin, Miroslav, Petrović, Predrag B., Vlahović, Branislav, Pavlović, Vladimir B., "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2" in Journal of the American Ceramic Society, 102, no. 12 (2019):7735-7745,
https://doi.org/10.1111/jace.16668 . .
8
4

Structure and enhanced antimicrobial activity of mechanically activated nano TiO2

Pavlović, Vera P.; Vujančević, Jelena; Mašković, Pavle Z.; Ćirković, Jovana; Papan, Jelena; Kosanović, Darko; Dramićanin, Miroslav; Petrović, Predrag B.; Vlahović, Branislav; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Mašković, Pavle Z.
AU  - Ćirković, Jovana
AU  - Papan, Jelena
AU  - Kosanović, Darko
AU  - Dramićanin, Miroslav
AU  - Petrović, Predrag B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8384
AB  - Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.
T2  - Journal of the American Ceramic Society
T1  - Structure and enhanced antimicrobial activity of mechanically activated nano TiO2
VL  - 102
IS  - 12
SP  - 7735
EP  - 7745
DO  - 10.1111/jace.16668
ER  - 
@article{
author = "Pavlović, Vera P. and Vujančević, Jelena and Mašković, Pavle Z. and Ćirković, Jovana and Papan, Jelena and Kosanović, Darko and Dramićanin, Miroslav and Petrović, Predrag B. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.",
journal = "Journal of the American Ceramic Society",
title = "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2",
volume = "102",
number = "12",
pages = "7735-7745",
doi = "10.1111/jace.16668"
}
Pavlović, V. P., Vujančević, J., Mašković, P. Z., Ćirković, J., Papan, J., Kosanović, D., Dramićanin, M., Petrović, P. B., Vlahović, B.,& Pavlović, V. B.. (2019). Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society, 102(12), 7735-7745.
https://doi.org/10.1111/jace.16668
Pavlović VP, Vujančević J, Mašković PZ, Ćirković J, Papan J, Kosanović D, Dramićanin M, Petrović PB, Vlahović B, Pavlović VB. Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society. 2019;102(12):7735-7745.
doi:10.1111/jace.16668 .
Pavlović, Vera P., Vujančević, Jelena, Mašković, Pavle Z., Ćirković, Jovana, Papan, Jelena, Kosanović, Darko, Dramićanin, Miroslav, Petrović, Predrag B., Vlahović, Branislav, Pavlović, Vladimir B., "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2" in Journal of the American Ceramic Society, 102, no. 12 (2019):7735-7745,
https://doi.org/10.1111/jace.16668 . .
8
3
4

The effect of ball milling on properties of sintered manganese-doped alumina

Filipović, Suzana; Obradović, Nina; Marković, Smilja; Mitrić, Miodrag; Balać, Igor; Đorđević, Antonije; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Balać, Igor
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8441
AB  - Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (α-, κ-, γ-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 °C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method overcomes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for ε'r and 0.003 for tanδ. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.
T2  - Advanced Powder Technology
T1  - The effect of ball milling on properties of sintered manganese-doped alumina
VL  - 30
IS  - 11
SP  - 2533
EP  - 2540
DO  - 10.1016/j.apt.2019.07.033
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Marković, Smilja and Mitrić, Miodrag and Balać, Igor and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2019",
abstract = "Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (α-, κ-, γ-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 °C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method overcomes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for ε'r and 0.003 for tanδ. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.",
journal = "Advanced Powder Technology",
title = "The effect of ball milling on properties of sintered manganese-doped alumina",
volume = "30",
number = "11",
pages = "2533-2540",
doi = "10.1016/j.apt.2019.07.033"
}
Filipović, S., Obradović, N., Marković, S., Mitrić, M., Balać, I., Đorđević, A.,& Pavlović, V. B.. (2019). The effect of ball milling on properties of sintered manganese-doped alumina. in Advanced Powder Technology, 30(11), 2533-2540.
https://doi.org/10.1016/j.apt.2019.07.033
Filipović S, Obradović N, Marković S, Mitrić M, Balać I, Đorđević A, Pavlović VB. The effect of ball milling on properties of sintered manganese-doped alumina. in Advanced Powder Technology. 2019;30(11):2533-2540.
doi:10.1016/j.apt.2019.07.033 .
Filipović, Suzana, Obradović, Nina, Marković, Smilja, Mitrić, Miodrag, Balać, Igor, Đorđević, Antonije, Pavlović, Vladimir B., "The effect of ball milling on properties of sintered manganese-doped alumina" in Advanced Powder Technology, 30, no. 11 (2019):2533-2540,
https://doi.org/10.1016/j.apt.2019.07.033 . .
1

The effect of ball milling on properties of sintered manganese-doped alumina

Filipović, Suzana; Obradović, Nina; Marković, Smilja; Mitrić, Miodrag; Balać, Igor; Đorđević, Antonije; Pavlović, Vladimir B.

(2019)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Balać, Igor
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8442
AB  - Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (α-, κ-, γ-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 °C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method overcomes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for ε'r and 0.003 for tanδ. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.
T2  - Advanced Powder Technology
T1  - The effect of ball milling on properties of sintered manganese-doped alumina
VL  - 30
IS  - 11
SP  - 2533
EP  - 2540
DO  - 10.1016/j.apt.2019.07.033
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Marković, Smilja and Mitrić, Miodrag and Balać, Igor and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2019",
abstract = "Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (α-, κ-, γ-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 °C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method overcomes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for ε'r and 0.003 for tanδ. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.",
journal = "Advanced Powder Technology",
title = "The effect of ball milling on properties of sintered manganese-doped alumina",
volume = "30",
number = "11",
pages = "2533-2540",
doi = "10.1016/j.apt.2019.07.033"
}
Filipović, S., Obradović, N., Marković, S., Mitrić, M., Balać, I., Đorđević, A.,& Pavlović, V. B.. (2019). The effect of ball milling on properties of sintered manganese-doped alumina. in Advanced Powder Technology, 30(11), 2533-2540.
https://doi.org/10.1016/j.apt.2019.07.033
Filipović S, Obradović N, Marković S, Mitrić M, Balać I, Đorđević A, Pavlović VB. The effect of ball milling on properties of sintered manganese-doped alumina. in Advanced Powder Technology. 2019;30(11):2533-2540.
doi:10.1016/j.apt.2019.07.033 .
Filipović, Suzana, Obradović, Nina, Marković, Smilja, Mitrić, Miodrag, Balać, Igor, Đorđević, Antonije, Pavlović, Vladimir B., "The effect of ball milling on properties of sintered manganese-doped alumina" in Advanced Powder Technology, 30, no. 11 (2019):2533-2540,
https://doi.org/10.1016/j.apt.2019.07.033 . .
1
3

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  - https://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",
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"
}
Obradović, N., Gigov, M., Đorđević, A., Kern, F., Dmitrović, S., Matović, B., Ðorđević, A., Tshantshapanyan, A., Vlahović, B., Petrović, P.,& Pavlović, V. B.. (2019). Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics, 13(1), 89-97.
https://doi.org/10.2298/PAC1901089O
Obradović N, Gigov M, Đorđević A, Kern F, Dmitrović S, Matović B, Ðorđević A, Tshantshapanyan A, Vlahović B, Petrović P, Pavlović VB. Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics. 2019;13(1):89-97.
doi:10.2298/PAC1901089O .
Obradović, Nina, Gigov, Mihajlo, Đorđević, Aleksandar, Kern, Frank, Dmitrović, Svetlana, Matović, Branko, Ðorđević, Antonije, Tshantshapanyan, Ani, Vlahović, Branislav, Petrović, Predrag, Pavlović, Vladimir B., "Shungite – a carbon-mineral rock material: Its sinterability and possible applications" in Processing and Application of Ceramics, 13, no. 1 (2019):89-97,
https://doi.org/10.2298/PAC1901089O . .
5
5

Structure and photocatalytic properties of sintered TiO2 nanotube arrays

Vujančević, Jelena; Bjelajac, Anđelika; Ćirković, Jovana; Pavlović, Vera P.; Horvath, Endre; Forro, Laszlo; Vlahović, Branislav; Mitrić, Miodrag; Janaćković, Đorđe T.; Pavlović, Vladimir B.

(2018)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Ćirković, Jovana
AU  - Pavlović, Vera P.
AU  - Horvath, Endre
AU  - Forro, Laszlo
AU  - Vlahović, Branislav
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe T.
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7651
AB  - One-dimensional (1D) TiO2 nanotubes perpendicular to the substrate were obtained by electrochemical oxidation of titanium foil in an acid electrolyte. In order to alter the crystallinity and the morphology of films the as-anodized amorphous TiO2 nanotube films were sintered at elevated temperatures. The evolution of the morphology was visualized via scanning electron microscopy (SEM), while the crystalline structure was investigated by Xray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by Xray photoelectron spectroscopy (XPS). The effects of crystallinity and morphology of TiO2 nanotube (NTs) films on photocatalytic degradation of methyl orange (MO) in an aqueous solution under UV light irradiation were also investigated. The TiO2 nanotubes sintered at 650 degrees C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films.
T2  - Science of Sintering
T1  - Structure and photocatalytic properties of sintered TiO2 nanotube arrays
VL  - 50
IS  - 1
SP  - 39
EP  - 50
DO  - 10.2298/SOS1801039V
ER  - 
@article{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Ćirković, Jovana and Pavlović, Vera P. and Horvath, Endre and Forro, Laszlo and Vlahović, Branislav and Mitrić, Miodrag and Janaćković, Đorđe T. and Pavlović, Vladimir B.",
year = "2018",
abstract = "One-dimensional (1D) TiO2 nanotubes perpendicular to the substrate were obtained by electrochemical oxidation of titanium foil in an acid electrolyte. In order to alter the crystallinity and the morphology of films the as-anodized amorphous TiO2 nanotube films were sintered at elevated temperatures. The evolution of the morphology was visualized via scanning electron microscopy (SEM), while the crystalline structure was investigated by Xray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by Xray photoelectron spectroscopy (XPS). The effects of crystallinity and morphology of TiO2 nanotube (NTs) films on photocatalytic degradation of methyl orange (MO) in an aqueous solution under UV light irradiation were also investigated. The TiO2 nanotubes sintered at 650 degrees C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films.",
journal = "Science of Sintering",
title = "Structure and photocatalytic properties of sintered TiO2 nanotube arrays",
volume = "50",
number = "1",
pages = "39-50",
doi = "10.2298/SOS1801039V"
}
Vujančević, J., Bjelajac, A., Ćirković, J., Pavlović, V. P., Horvath, E., Forro, L., Vlahović, B., Mitrić, M., Janaćković, Đ. T.,& Pavlović, V. B.. (2018). Structure and photocatalytic properties of sintered TiO2 nanotube arrays. in Science of Sintering, 50(1), 39-50.
https://doi.org/10.2298/SOS1801039V
Vujančević J, Bjelajac A, Ćirković J, Pavlović VP, Horvath E, Forro L, Vlahović B, Mitrić M, Janaćković ĐT, Pavlović VB. Structure and photocatalytic properties of sintered TiO2 nanotube arrays. in Science of Sintering. 2018;50(1):39-50.
doi:10.2298/SOS1801039V .
Vujančević, Jelena, Bjelajac, Anđelika, Ćirković, Jovana, Pavlović, Vera P., Horvath, Endre, Forro, Laszlo, Vlahović, Branislav, Mitrić, Miodrag, Janaćković, Đorđe T., Pavlović, Vladimir B., "Structure and photocatalytic properties of sintered TiO2 nanotube arrays" in Science of Sintering, 50, no. 1 (2018):39-50,
https://doi.org/10.2298/SOS1801039V . .
6
9
9

Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films

Peleš, Adriana; Aleksić, Obrad S.; Pavlović, Vera P.; Đoković, Vladimir; Dojčilović, Radovan; Nikolić, Zoran M.; Marinković, Filip S.; Mitrić, Miodrag; Blagojević, Vladimir D.; Vlahović, Branislav; Pavlović, Vladimir B.

(2018)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Zoran M.
AU  - Marinković, Filip S.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir D.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://stacks.iop.org/1402-4896/93/i=10/a=105801?key=crossref.54536d8babe95dbc820e50211f592252
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7898
AB  - The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
VL  - 93
IS  - 10
SP  - 105801
DO  - 10.1088/1402-4896/aad749
ER  - 
@article{
author = "Peleš, Adriana and Aleksić, Obrad S. and Pavlović, Vera P. and Đoković, Vladimir and Dojčilović, Radovan and Nikolić, Zoran M. and Marinković, Filip S. and Mitrić, Miodrag and Blagojević, Vladimir D. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
abstract = "The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
volume = "93",
number = "10",
pages = "105801",
doi = "10.1088/1402-4896/aad749"
}
Peleš, A., Aleksić, O. S., Pavlović, V. P., Đoković, V., Dojčilović, R., Nikolić, Z. M., Marinković, F. S., Mitrić, M., Blagojević, V. D., Vlahović, B.,& Pavlović, V. B.. (2018). Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta, 93(10), 105801.
https://doi.org/10.1088/1402-4896/aad749
Peleš A, Aleksić OS, Pavlović VP, Đoković V, Dojčilović R, Nikolić ZM, Marinković FS, Mitrić M, Blagojević VD, Vlahović B, Pavlović VB. Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta. 2018;93(10):105801.
doi:10.1088/1402-4896/aad749 .
Peleš, Adriana, Aleksić, Obrad S., Pavlović, Vera P., Đoković, Vladimir, Dojčilović, Radovan, Nikolić, Zoran M., Marinković, Filip S., Mitrić, Miodrag, Blagojević, Vladimir D., Vlahović, Branislav, Pavlović, Vladimir B., "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films" in Physica Scripta, 93, no. 10 (2018):105801,
https://doi.org/10.1088/1402-4896/aad749 . .
1
13
11
11

Discrete element model of particle transport and premixing action in modified screw conveyors

Pezo, Milada L.; Pezo, Lato; Jovanović, Aca; Terzić, Anja; Andrić, Ljubiša; Lončar, Biljana; Kojić, Predrag S.

(2018)

TY  - JOUR
AU  - Pezo, Milada L.
AU  - Pezo, Lato
AU  - Jovanović, Aca
AU  - Terzić, Anja
AU  - Andrić, Ljubiša
AU  - Lončar, Biljana
AU  - Kojić, Predrag S.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0032591018304480
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7719
AB  - In this paper, five types of horizontal single-pitch screw conveyors with modified geometry, with three different lengths (400, 600 and 800 mm) were investigated for transport and auxiliary mixing action of two materials: natural zeolite and quartz aggregate (sand) with particle sizes 3, 4 and 5 mm. The geometry of the screw transporter is changed by welding three additional helices oriented in the same or the opposite direction from screw cutting edges, enabling the premixing of materials, during the transport. The proper mixing of the observed materials provides an adequate disposition of zeolite particles within the composite and prevents agglomeration and interference with cement hydration. Zeolite application as a binder in a building material is a possible solution to environmental pollution problems caused by cement production. The influences of screw length, particle diameter, the studied geometry variations of screw design, on the mixing performances of the screw conveyor-mixer during material transport were explored. All investigations were performed experimentally and numerically, by using Discrete Element Method (DEM). The experimental results and the results of the DEM investigation were used for the development of mathematical models for the prediction of mixing quality, which are presented in the form of second order polynomial and artificial neural network model.
T2  - Powder Technology
T1  - Discrete element model of particle transport and premixing action in modified screw conveyors
VL  - 336
SP  - 255
EP  - 264
DO  - 10.1016/j.powtec.2018.06.009
ER  - 
@article{
author = "Pezo, Milada L. and Pezo, Lato and Jovanović, Aca and Terzić, Anja and Andrić, Ljubiša and Lončar, Biljana and Kojić, Predrag S.",
year = "2018",
abstract = "In this paper, five types of horizontal single-pitch screw conveyors with modified geometry, with three different lengths (400, 600 and 800 mm) were investigated for transport and auxiliary mixing action of two materials: natural zeolite and quartz aggregate (sand) with particle sizes 3, 4 and 5 mm. The geometry of the screw transporter is changed by welding three additional helices oriented in the same or the opposite direction from screw cutting edges, enabling the premixing of materials, during the transport. The proper mixing of the observed materials provides an adequate disposition of zeolite particles within the composite and prevents agglomeration and interference with cement hydration. Zeolite application as a binder in a building material is a possible solution to environmental pollution problems caused by cement production. The influences of screw length, particle diameter, the studied geometry variations of screw design, on the mixing performances of the screw conveyor-mixer during material transport were explored. All investigations were performed experimentally and numerically, by using Discrete Element Method (DEM). The experimental results and the results of the DEM investigation were used for the development of mathematical models for the prediction of mixing quality, which are presented in the form of second order polynomial and artificial neural network model.",
journal = "Powder Technology",
title = "Discrete element model of particle transport and premixing action in modified screw conveyors",
volume = "336",
pages = "255-264",
doi = "10.1016/j.powtec.2018.06.009"
}
Pezo, M. L., Pezo, L., Jovanović, A., Terzić, A., Andrić, L., Lončar, B.,& Kojić, P. S.. (2018). Discrete element model of particle transport and premixing action in modified screw conveyors. in Powder Technology, 336, 255-264.
https://doi.org/10.1016/j.powtec.2018.06.009
Pezo ML, Pezo L, Jovanović A, Terzić A, Andrić L, Lončar B, Kojić PS. Discrete element model of particle transport and premixing action in modified screw conveyors. in Powder Technology. 2018;336:255-264.
doi:10.1016/j.powtec.2018.06.009 .
Pezo, Milada L., Pezo, Lato, Jovanović, Aca, Terzić, Anja, Andrić, Ljubiša, Lončar, Biljana, Kojić, Predrag S., "Discrete element model of particle transport and premixing action in modified screw conveyors" in Powder Technology, 336 (2018):255-264,
https://doi.org/10.1016/j.powtec.2018.06.009 . .
8
7
12

Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization

Brkovic, Danijela V.; Pavlović, Vladimir B.; Pavlović, Vera P.; Obradović, Nina; Mitrić, Miodrag; Stevanović, Sanja; Vlahović, Branislav; Uskokovic, Petar S.; Marinković, Aleksandar D.

(2017)

TY  - JOUR
AU  - Brkovic, Danijela V.
AU  - Pavlović, Vladimir B.
AU  - Pavlović, Vera P.
AU  - Obradović, Nina
AU  - Mitrić, Miodrag
AU  - Stevanović, Sanja
AU  - Vlahović, Branislav
AU  - Uskokovic, Petar S.
AU  - Marinković, Aleksandar D.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1753
AB  - The structural characteristics of polymer nanocomposites with functionalized multiwall carbon nanotubes (MWCNTs) in poly(methyl methacrylate) matrix have been studied in relation to nanofiller loading and surface functionality. Different functional groups have been covalently attached on the MWCNTs sidewalls in order to induce interfacial interactions at nanofiller/polymer interface, which resulted in an improved nanomechanical features. Structural properties of nanocomposites, studied with XRD and Raman analysis, indicated the most pronounced decrease in a degree of amorphousness for samples containing 0.5 and 1 wt% of MWCNTs functionalized with dapsone (dapson-MWCNT) and diethyl malonate (dem-MWCNT). SEM and TEM micrographs confirmed improved dispersibility of the MWCNTs modified with aromatic structure of dapsone inside PMMA matrix. A significant increase in a glass transition temperature of over 60 degrees C has been found for the 1 wt% dapson-MWCNT nanocomposite. Additional modification of dapson-MWCNT by further increasing aromaticity and voluminosity of attached moiety (fid-MWCNT), showed 30 degrees C increases in a glass transition temperature at 4 wt% of nanofiller loading, which is similar to shift of 37 degrees C with loading of MWCNTs modified with ester terminal group. A maximum increase of 56% of reduced modulus and 86% of hardness was obtained for 1 wt% loading of dapson-MWCNT nanofiller. (C) 2016 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization
VL  - 38
IS  - SI
SP  - E472
EP  - E489
DO  - 10.1002/pc.23996
ER  - 
@article{
author = "Brkovic, Danijela V. and Pavlović, Vladimir B. and Pavlović, Vera P. and Obradović, Nina and Mitrić, Miodrag and Stevanović, Sanja and Vlahović, Branislav and Uskokovic, Petar S. and Marinković, Aleksandar D.",
year = "2017",
abstract = "The structural characteristics of polymer nanocomposites with functionalized multiwall carbon nanotubes (MWCNTs) in poly(methyl methacrylate) matrix have been studied in relation to nanofiller loading and surface functionality. Different functional groups have been covalently attached on the MWCNTs sidewalls in order to induce interfacial interactions at nanofiller/polymer interface, which resulted in an improved nanomechanical features. Structural properties of nanocomposites, studied with XRD and Raman analysis, indicated the most pronounced decrease in a degree of amorphousness for samples containing 0.5 and 1 wt% of MWCNTs functionalized with dapsone (dapson-MWCNT) and diethyl malonate (dem-MWCNT). SEM and TEM micrographs confirmed improved dispersibility of the MWCNTs modified with aromatic structure of dapsone inside PMMA matrix. A significant increase in a glass transition temperature of over 60 degrees C has been found for the 1 wt% dapson-MWCNT nanocomposite. Additional modification of dapson-MWCNT by further increasing aromaticity and voluminosity of attached moiety (fid-MWCNT), showed 30 degrees C increases in a glass transition temperature at 4 wt% of nanofiller loading, which is similar to shift of 37 degrees C with loading of MWCNTs modified with ester terminal group. A maximum increase of 56% of reduced modulus and 86% of hardness was obtained for 1 wt% loading of dapson-MWCNT nanofiller. (C) 2016 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization",
volume = "38",
number = "SI",
pages = "E472-E489",
doi = "10.1002/pc.23996"
}
Brkovic, D. V., Pavlović, V. B., Pavlović, V. P., Obradović, N., Mitrić, M., Stevanović, S., Vlahović, B., Uskokovic, P. S.,& Marinković, A. D.. (2017). Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization. in Polymer Composites, 38(SI), E472-E489.
https://doi.org/10.1002/pc.23996
Brkovic DV, Pavlović VB, Pavlović VP, Obradović N, Mitrić M, Stevanović S, Vlahović B, Uskokovic PS, Marinković AD. Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization. in Polymer Composites. 2017;38(SI):E472-E489.
doi:10.1002/pc.23996 .
Brkovic, Danijela V., Pavlović, Vladimir B., Pavlović, Vera P., Obradović, Nina, Mitrić, Miodrag, Stevanović, Sanja, Vlahović, Branislav, Uskokovic, Petar S., Marinković, Aleksandar D., "Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization" in Polymer Composites, 38, no. SI (2017):E472-E489,
https://doi.org/10.1002/pc.23996 . .
8
6

Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities

Obradović, Nina; Filipović, Suzana; Marković, Smilja ; Mitrić, Miodrag; Rusmirović, Jelena D.; Marinković, Aleksandar D.; Antic, Vesna; Pavlović, Vladimir B.

(2017)

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Marković, Smilja 
AU  - Mitrić, Miodrag
AU  - Rusmirović, Jelena D.
AU  - Marinković, Aleksandar D.
AU  - Antic, Vesna
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1558
AB  - In this study, porous macro- and micro-cellular wollastonite-based ceramics was synthesized. A ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as a starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, the sintering regime was set up. The prepared mixtures were pressed into pallets and sintered at 900 degrees C. During the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples, as well as the microstructures, were analyzed by using X-ray diffraction and SEM. A two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that the addition of different pore-forming agents resulted in significantly different microstructures. In a batch test, the influence of pH, the contact time and the initial ion concentration on the adsorption efficiency of As+5, Cr(+6)and phosphate ions on the synthesized adsorbents were studied. Time-dependent adsorption is best described by the pseudo-second-order kinetic model and the Weber-Morris model, which predict intra-particle diffusion as a rate-controlling step of the overall process. High adsorption capacities, 21.93, 23.88, and 27.29 mg g(-1), were obtained for the CaCO3-siloxane-nanocellulose sorbent, and similar/lower capacities were obtained for the CaCO3-siloxane-PMMA and CaCO3-siloxane-cotton wool adsorbents.
T2  - Ceramics International
T1  - Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities
VL  - 43
IS  - 10
SP  - 7461
EP  - 7468
DO  - 10.1016/j.ceramint.2017.03.021
ER  - 
@article{
author = "Obradović, Nina and Filipović, Suzana and Marković, Smilja  and Mitrić, Miodrag and Rusmirović, Jelena D. and Marinković, Aleksandar D. and Antic, Vesna and Pavlović, Vladimir B.",
year = "2017",
abstract = "In this study, porous macro- and micro-cellular wollastonite-based ceramics was synthesized. A ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as a starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, the sintering regime was set up. The prepared mixtures were pressed into pallets and sintered at 900 degrees C. During the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples, as well as the microstructures, were analyzed by using X-ray diffraction and SEM. A two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that the addition of different pore-forming agents resulted in significantly different microstructures. In a batch test, the influence of pH, the contact time and the initial ion concentration on the adsorption efficiency of As+5, Cr(+6)and phosphate ions on the synthesized adsorbents were studied. Time-dependent adsorption is best described by the pseudo-second-order kinetic model and the Weber-Morris model, which predict intra-particle diffusion as a rate-controlling step of the overall process. High adsorption capacities, 21.93, 23.88, and 27.29 mg g(-1), were obtained for the CaCO3-siloxane-nanocellulose sorbent, and similar/lower capacities were obtained for the CaCO3-siloxane-PMMA and CaCO3-siloxane-cotton wool adsorbents.",
journal = "Ceramics International",
title = "Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities",
volume = "43",
number = "10",
pages = "7461-7468",
doi = "10.1016/j.ceramint.2017.03.021"
}
Obradović, N., Filipović, S., Marković, S., Mitrić, M., Rusmirović, J. D., Marinković, A. D., Antic, V.,& Pavlović, V. B.. (2017). Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities. in Ceramics International, 43(10), 7461-7468.
https://doi.org/10.1016/j.ceramint.2017.03.021
Obradović N, Filipović S, Marković S, Mitrić M, Rusmirović JD, Marinković AD, Antic V, Pavlović VB. Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities. in Ceramics International. 2017;43(10):7461-7468.
doi:10.1016/j.ceramint.2017.03.021 .
Obradović, Nina, Filipović, Suzana, Marković, Smilja , Mitrić, Miodrag, Rusmirović, Jelena D., Marinković, Aleksandar D., Antic, Vesna, Pavlović, Vladimir B., "Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities" in Ceramics International, 43, no. 10 (2017):7461-7468,
https://doi.org/10.1016/j.ceramint.2017.03.021 . .
13
13
17

Synthesis and antimicrobial properties of Zn-mineralized alginate nanocomposites

Malagurski, Ivana; Levic, Steva; Pantic, Milena; Matijasevic, Danka; Mitrić, Miodrag; Pavlović, Vladimir B.; Dimitrijević-Branković, Suzana I.

(2017)

TY  - JOUR
AU  - Malagurski, Ivana
AU  - Levic, Steva
AU  - Pantic, Milena
AU  - Matijasevic, Danka
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
AU  - Dimitrijević-Branković, Suzana I.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1508
AB  - New bioactive and antimicrobial biomaterials were produced by alginate-mediated biomineralization with Zn-mineral phase. The synthesis procedure is simple, cost-effective and resulted in. two different Zn-mineralized alginate nanocomposites, Zn-carbonate/Zn-alginate and Zn-phosphate/Zn-alginate. The presence of Zn-mineral phase and its type, have significantly affected nanocomposite morphology, stability, total metallic loading and potential to release Zn(II) in physiological environment. Antimicrobial experiments showed that both types of Zn-mineralized nanocomposites exhibit strong antimicrobial effect against Escherichia coli, Staphylococcus aureus and Candida albicans. These results suggest that alginate biomineralization, where minerals are salts of essential metallic ions like Zn(II), represents agood strategy for designing multifunctional biomaterials for potential biomedical applications. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Carbohydrate Polymers
T1  - Synthesis and antimicrobial properties of Zn-mineralized alginate nanocomposites
VL  - 165
SP  - 313
EP  - 321
DO  - 10.1016/j.carbpol.2017.02.064
ER  - 
@article{
author = "Malagurski, Ivana and Levic, Steva and Pantic, Milena and Matijasevic, Danka and Mitrić, Miodrag and Pavlović, Vladimir B. and Dimitrijević-Branković, Suzana I.",
year = "2017",
abstract = "New bioactive and antimicrobial biomaterials were produced by alginate-mediated biomineralization with Zn-mineral phase. The synthesis procedure is simple, cost-effective and resulted in. two different Zn-mineralized alginate nanocomposites, Zn-carbonate/Zn-alginate and Zn-phosphate/Zn-alginate. The presence of Zn-mineral phase and its type, have significantly affected nanocomposite morphology, stability, total metallic loading and potential to release Zn(II) in physiological environment. Antimicrobial experiments showed that both types of Zn-mineralized nanocomposites exhibit strong antimicrobial effect against Escherichia coli, Staphylococcus aureus and Candida albicans. These results suggest that alginate biomineralization, where minerals are salts of essential metallic ions like Zn(II), represents agood strategy for designing multifunctional biomaterials for potential biomedical applications. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Carbohydrate Polymers",
title = "Synthesis and antimicrobial properties of Zn-mineralized alginate nanocomposites",
volume = "165",
pages = "313-321",
doi = "10.1016/j.carbpol.2017.02.064"
}
Malagurski, I., Levic, S., Pantic, M., Matijasevic, D., Mitrić, M., Pavlović, V. B.,& Dimitrijević-Branković, S. I.. (2017). Synthesis and antimicrobial properties of Zn-mineralized alginate nanocomposites. in Carbohydrate Polymers, 165, 313-321.
https://doi.org/10.1016/j.carbpol.2017.02.064
Malagurski I, Levic S, Pantic M, Matijasevic D, Mitrić M, Pavlović VB, Dimitrijević-Branković SI. Synthesis and antimicrobial properties of Zn-mineralized alginate nanocomposites. in Carbohydrate Polymers. 2017;165:313-321.
doi:10.1016/j.carbpol.2017.02.064 .
Malagurski, Ivana, Levic, Steva, Pantic, Milena, Matijasevic, Danka, Mitrić, Miodrag, Pavlović, Vladimir B., Dimitrijević-Branković, Suzana I., "Synthesis and antimicrobial properties of Zn-mineralized alginate nanocomposites" in Carbohydrate Polymers, 165 (2017):313-321,
https://doi.org/10.1016/j.carbpol.2017.02.064 . .
24
20
20

Sintering of Fly Ash Based Composites with Zeolite and Bentonite Addition for Application in Construction Materials

Terzić, Anja; Đorđević, Nataša; Mitrić, Miodrag; Marković, Smilja ; Dordevic, Katarina; Pavlović, Vladimir B.

(2017)

TY  - JOUR
AU  - Terzić, Anja
AU  - Đorđević, Nataša
AU  - Mitrić, Miodrag
AU  - Marković, Smilja 
AU  - Dordevic, Katarina
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1512
AB  - Due to pozzolanic characteristics, fly ash is commonly used as a cement replacement in construction composites. Addition of natural clays with sorption ability (i.e. zeolite and bentonite) in to the fly ash based construction materials is of both scientific and industrial interest. Namely, due to the application of sorptive clay minerals, it is possible to immobilize toxic heavy metals from the composite structure. The thermal compatibility of fly ash and zeolite, as well as fly ash and bentonite, within the composite was observed during sintering procedure. The starting components were used in 1: 1 ratio and they were applied without additional mechanical treatment. The used compaction pressure for the tablets was 2 t.cm(-2). The sintering process was conducted at 1000 degrees C and 1200 degrees C for two hours in the air atmosphere. The mineralogical phase composition of the non-treated and sintered samples was analyzed using X-ray diffraction method. Scanning electron microscopy was applied in the analysis of the microstructure of starting and sintered samples. The thermal behavior was observed via DTA method. The influence of temperature on the properties of fly ash-zeolite and fly ash-bentonite composites was investigated.
T2  - Science of Sintering
T1  - Sintering of Fly Ash Based Composites with Zeolite and Bentonite Addition for Application in Construction Materials
VL  - 49
IS  - 1
SP  - 23
EP  - 37
DO  - 10.2298/SOS1701023T
ER  - 
@article{
author = "Terzić, Anja and Đorđević, Nataša and Mitrić, Miodrag and Marković, Smilja  and Dordevic, Katarina and Pavlović, Vladimir B.",
year = "2017",
abstract = "Due to pozzolanic characteristics, fly ash is commonly used as a cement replacement in construction composites. Addition of natural clays with sorption ability (i.e. zeolite and bentonite) in to the fly ash based construction materials is of both scientific and industrial interest. Namely, due to the application of sorptive clay minerals, it is possible to immobilize toxic heavy metals from the composite structure. The thermal compatibility of fly ash and zeolite, as well as fly ash and bentonite, within the composite was observed during sintering procedure. The starting components were used in 1: 1 ratio and they were applied without additional mechanical treatment. The used compaction pressure for the tablets was 2 t.cm(-2). The sintering process was conducted at 1000 degrees C and 1200 degrees C for two hours in the air atmosphere. The mineralogical phase composition of the non-treated and sintered samples was analyzed using X-ray diffraction method. Scanning electron microscopy was applied in the analysis of the microstructure of starting and sintered samples. The thermal behavior was observed via DTA method. The influence of temperature on the properties of fly ash-zeolite and fly ash-bentonite composites was investigated.",
journal = "Science of Sintering",
title = "Sintering of Fly Ash Based Composites with Zeolite and Bentonite Addition for Application in Construction Materials",
volume = "49",
number = "1",
pages = "23-37",
doi = "10.2298/SOS1701023T"
}
Terzić, A., Đorđević, N., Mitrić, M., Marković, S., Dordevic, K.,& Pavlović, V. B.. (2017). Sintering of Fly Ash Based Composites with Zeolite and Bentonite Addition for Application in Construction Materials. in Science of Sintering, 49(1), 23-37.
https://doi.org/10.2298/SOS1701023T
Terzić A, Đorđević N, Mitrić M, Marković S, Dordevic K, Pavlović VB. Sintering of Fly Ash Based Composites with Zeolite and Bentonite Addition for Application in Construction Materials. in Science of Sintering. 2017;49(1):23-37.
doi:10.2298/SOS1701023T .
Terzić, Anja, Đorđević, Nataša, Mitrić, Miodrag, Marković, Smilja , Dordevic, Katarina, Pavlović, Vladimir B., "Sintering of Fly Ash Based Composites with Zeolite and Bentonite Addition for Application in Construction Materials" in Science of Sintering, 49, no. 1 (2017):23-37,
https://doi.org/10.2298/SOS1701023T . .
4
10
11

Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics

Filipović, Suzana; Obradović, Nina; Pavlović, Vladimir B.; Mitrić, Miodrag; Đorđević, Antonije R.; Kachlik, M.; Maca, Karel

(Elsevier, 2016)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Mitrić, Miodrag
AU  - Đorđević, Antonije R.
AU  - Kachlik, M.
AU  - Maca, Karel
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1037
AB  - The aim of this study is to explore the influence of the processing route on the structural and physical properties of bulk MgTiO3 ceramics. Commercially available MgO and TiO2 powders were mechanically activated in a planetary ball mill. Green bodies were formed by an isostatic pressure of 300 MPa. The sintering of these samples was done either by the Two-Step Sintering (TSS) approach or by conventional pressureless sintering followed by Hot Isostatic Pressing (post-HIPing). The first set of compacts was sintered by TSS in air at 1300 degrees C for 30 min and the next step was performed at 1200 degrees C for 20 h. The density of the obtained samples after the two-step sintering reached almost 90% of the theoretical density (%TD). The second set of compacts was sintered at 1400 degrees C for 30 min in air. The samples without open porosity were post-sintered by the HIP at 1200 degrees C for 2 h in an argon atmosphere at a pressure of 200 MPa. The density significantly increased up to 96%TD. The differences between samples prepared by these two techniques were also analyzed by XRD and SEM. The lattice vibration spectra were obtained using Raman spectroscopy and they indicate a high degree of lattice disorder, as well as high values of the oxygen vacancy concentration. Electrical characteristic were established in the frequency range from 10 kHz to 10 GHz. The choice of the processing route had considerable influence on structural and physical properties of MgTiO3 ceramics. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PB  - Elsevier
T2  - Ceramics International
T1  - Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics
VL  - 42
IS  - 8
SP  - 9887
EP  - 9898
DO  - 10.1016/j.ceramint.2016.03.088
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Pavlović, Vladimir B. and Mitrić, Miodrag and Đorđević, Antonije R. and Kachlik, M. and Maca, Karel",
year = "2016",
abstract = "The aim of this study is to explore the influence of the processing route on the structural and physical properties of bulk MgTiO3 ceramics. Commercially available MgO and TiO2 powders were mechanically activated in a planetary ball mill. Green bodies were formed by an isostatic pressure of 300 MPa. The sintering of these samples was done either by the Two-Step Sintering (TSS) approach or by conventional pressureless sintering followed by Hot Isostatic Pressing (post-HIPing). The first set of compacts was sintered by TSS in air at 1300 degrees C for 30 min and the next step was performed at 1200 degrees C for 20 h. The density of the obtained samples after the two-step sintering reached almost 90% of the theoretical density (%TD). The second set of compacts was sintered at 1400 degrees C for 30 min in air. The samples without open porosity were post-sintered by the HIP at 1200 degrees C for 2 h in an argon atmosphere at a pressure of 200 MPa. The density significantly increased up to 96%TD. The differences between samples prepared by these two techniques were also analyzed by XRD and SEM. The lattice vibration spectra were obtained using Raman spectroscopy and they indicate a high degree of lattice disorder, as well as high values of the oxygen vacancy concentration. Electrical characteristic were established in the frequency range from 10 kHz to 10 GHz. The choice of the processing route had considerable influence on structural and physical properties of MgTiO3 ceramics. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics",
volume = "42",
number = "8",
pages = "9887-9898",
doi = "10.1016/j.ceramint.2016.03.088"
}
Filipović, S., Obradović, N., Pavlović, V. B., Mitrić, M., Đorđević, A. R., Kachlik, M.,& Maca, K.. (2016). Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics. in Ceramics International
Elsevier., 42(8), 9887-9898.
https://doi.org/10.1016/j.ceramint.2016.03.088
Filipović S, Obradović N, Pavlović VB, Mitrić M, Đorđević AR, Kachlik M, Maca K. Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics. in Ceramics International. 2016;42(8):9887-9898.
doi:10.1016/j.ceramint.2016.03.088 .
Filipović, Suzana, Obradović, Nina, Pavlović, Vladimir B., Mitrić, Miodrag, Đorđević, Antonije R., Kachlik, M., Maca, Karel, "Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics" in Ceramics International, 42, no. 8 (2016):9887-9898,
https://doi.org/10.1016/j.ceramint.2016.03.088 . .
9
10
11

Influence of different pore-forming agents on wollastonite microstructures

Obradović, Nina; Filipović, Suzana; Marković, Smilja; Mitrić, Miodrag; Antić, V.; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2016)

TY  - CONF
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Antić, V.
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/874
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1156
UR  - http://www.itn.sanu.ac.rs/opus4/files/1156/Obradovic_ACAV.pdf
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7548
AB  - In this study, highly porous macro- and micro-cellular wollastonite-based ceramics was synthesized. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 oC for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, sintering regime was set up. Prepared mixtures were pressed into pallets and sintered at 900 oC. During the sintering regime, highly porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by the means of X-ray diffraction method and SEM. Two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that addition of different pore-forming agent resulted in significantly different microstructures.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
T1  - Influence of different pore-forming agents on wollastonite microstructures
SP  - 42
EP  - 42
ER  - 
@conference{
author = "Obradović, Nina and Filipović, Suzana and Marković, Smilja and Mitrić, Miodrag and Antić, V. and Pavlović, Vladimir B.",
year = "2016",
abstract = "In this study, highly porous macro- and micro-cellular wollastonite-based ceramics was synthesized. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 oC for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, sintering regime was set up. Prepared mixtures were pressed into pallets and sintered at 900 oC. During the sintering regime, highly porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by the means of X-ray diffraction method and SEM. Two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that addition of different pore-forming agent resulted in significantly different microstructures.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade",
title = "Influence of different pore-forming agents on wollastonite microstructures",
pages = "42-42"
}
Obradović, N., Filipović, S., Marković, S., Mitrić, M., Antić, V.,& Pavlović, V. B.. (2016). Influence of different pore-forming agents on wollastonite microstructures. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
Belgrade : Serbian Ceramic Society., 42-42.
Obradović N, Filipović S, Marković S, Mitrić M, Antić V, Pavlović VB. Influence of different pore-forming agents on wollastonite microstructures. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade. 2016;:42-42..
Obradović, Nina, Filipović, Suzana, Marković, Smilja, Mitrić, Miodrag, Antić, V., Pavlović, Vladimir B., "Influence of different pore-forming agents on wollastonite microstructures" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade (2016):42-42.

Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2

Đorđević, Nataša; Obradović, Nina; Filipović, Suzana; Kosanović, Darko; Marković, Smilja; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2016)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/894
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1176
UR  - http://www.itn.sanu.ac.rs/opus4/files/1176/Djordjevic_Yucomat2016.pdf
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7552
AB  - Cordierite 2MgO+2Al2O3+5SiO2 is frequently used ceramic material, that is commonly used as a carrier of electrical components due to its low dielectric constant (~ 5), and low temperature thermal expansion coefficient (20•10-7 ºC-1). In order to accelerate the process of sintering, 5.00 mass% TeO2 was added to the starting mixtures. System was tested in two parallel mixtures, one with no added additives, and the other one with TeO2. The mechanical activation of the both mixtures was performed in a high-energy ball mill in time intervals from 0 to 40 min with ball to powder mass ratio 1:40. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders as well as microstructures was analyzed by the means of X-ray diffraction method and SEM.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
T1  - Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2
SP  - 75
EP  - 75
ER  - 
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Filipović, Suzana and Kosanović, Darko and Marković, Smilja and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2016",
abstract = "Cordierite 2MgO+2Al2O3+5SiO2 is frequently used ceramic material, that is commonly used as a carrier of electrical components due to its low dielectric constant (~ 5), and low temperature thermal expansion coefficient (20•10-7 ºC-1). In order to accelerate the process of sintering, 5.00 mass% TeO2 was added to the starting mixtures. System was tested in two parallel mixtures, one with no added additives, and the other one with TeO2. The mechanical activation of the both mixtures was performed in a high-energy ball mill in time intervals from 0 to 40 min with ball to powder mass ratio 1:40. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders as well as microstructures was analyzed by the means of X-ray diffraction method and SEM.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016",
title = "Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2",
pages = "75-75"
}
Đorđević, N., Obradović, N., Filipović, S., Kosanović, D., Marković, S., Mitrić, M.,& Pavlović, V. B.. (2016). Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2. in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
Belgrade : Materials Research Society of Serbia., 75-75.
Đorđević N, Obradović N, Filipović S, Kosanović D, Marković S, Mitrić M, Pavlović VB. Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2. in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016. 2016;:75-75..
Đorđević, Nataša, Obradović, Nina, Filipović, Suzana, Kosanović, Darko, Marković, Smilja, Mitrić, Miodrag, Pavlović, Vladimir B., "Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2" in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016 (2016):75-75.

Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines

Filipović, Nenad R.; Bjelogrlic, Snezana; Todorović, Tamara R.; Blagojevic, Vladimir A.; Muller, Christian D.; Marinković, Aleksandar D.; Vujčić, Miroslava T.; Janović, Barbara S.; Malesevic, Aleksandar S.; Begovic, Nebojsa; Senćanski, Milan V.; Minic, Dragica M.

(2016)

TY  - JOUR
AU  - Filipović, Nenad R.
AU  - Bjelogrlic, Snezana
AU  - Todorović, Tamara R.
AU  - Blagojevic, Vladimir A.
AU  - Muller, Christian D.
AU  - Marinković, Aleksandar D.
AU  - Vujčić, Miroslava T.
AU  - Janović, Barbara S.
AU  - Malesevic, Aleksandar S.
AU  - Begovic, Nebojsa
AU  - Senćanski, Milan V.
AU  - Minic, Dragica M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1331
AB  - A new Ni(II) complex, [Ni(L)(H2O)] (1), with diethyl 3,3-(2,2-(1,1-(pyridine-2,6-diyl) bis(ethan-1-yl-1-ylidene)) bis(hydrazin-1-yl-2-ylidene)) bis(3-oxopropanoate) ligand (H2L) was synthesized as a potential chemotherapeutic agent. Polidentate ligand was coordinated to Ni(II) NNN-tridentately, in dianionic form, while monodentate water coordination completed square-planar geometry around metal. Structure in the solution was determined by NMR spectroscopy and the same coordination mode was observed in the solid state using IR spectroscopy and further verified by DFT calculations and electrochemical studies. Thermal stability of 1 was determined in both air and nitrogen atmosphere. Anticancer activity of 1 was investigated on acute monocytic leukemia (THP-1) and pancreatic adenocarcinoma (AsPC-1) cell lines. On THP-1 cells 1 induced powerful apoptotic response (ED50 = 10 +/- 3 mu M), which was revealed to be only partially caspase-dependent, with activation of caspase-8 as the dominant course. This suggested that experimentally validated covalent binding of 1 to DNA is not the only mechanism responsible for programmed cell death. This was supported with experiments on AsPC-1 cells. Although treatment of those cells with 1 resulted in poor apoptotic response, cell cycle changes showed concentration-dependent shifts indicating a dual mechanism of activity. This study also reviews the results of preliminary biological screening, which demonstrates that 1 displays a unique pattern of anticancer activity with at least two mechanisms involved.
T2  - RSC Advances
T1  - Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines
VL  - 6
IS  - 110
SP  - 108726
EP  - 108740
DO  - 10.1039/c6ra24604d
ER  - 
@article{
author = "Filipović, Nenad R. and Bjelogrlic, Snezana and Todorović, Tamara R. and Blagojevic, Vladimir A. and Muller, Christian D. and Marinković, Aleksandar D. and Vujčić, Miroslava T. and Janović, Barbara S. and Malesevic, Aleksandar S. and Begovic, Nebojsa and Senćanski, Milan V. and Minic, Dragica M.",
year = "2016",
abstract = "A new Ni(II) complex, [Ni(L)(H2O)] (1), with diethyl 3,3-(2,2-(1,1-(pyridine-2,6-diyl) bis(ethan-1-yl-1-ylidene)) bis(hydrazin-1-yl-2-ylidene)) bis(3-oxopropanoate) ligand (H2L) was synthesized as a potential chemotherapeutic agent. Polidentate ligand was coordinated to Ni(II) NNN-tridentately, in dianionic form, while monodentate water coordination completed square-planar geometry around metal. Structure in the solution was determined by NMR spectroscopy and the same coordination mode was observed in the solid state using IR spectroscopy and further verified by DFT calculations and electrochemical studies. Thermal stability of 1 was determined in both air and nitrogen atmosphere. Anticancer activity of 1 was investigated on acute monocytic leukemia (THP-1) and pancreatic adenocarcinoma (AsPC-1) cell lines. On THP-1 cells 1 induced powerful apoptotic response (ED50 = 10 +/- 3 mu M), which was revealed to be only partially caspase-dependent, with activation of caspase-8 as the dominant course. This suggested that experimentally validated covalent binding of 1 to DNA is not the only mechanism responsible for programmed cell death. This was supported with experiments on AsPC-1 cells. Although treatment of those cells with 1 resulted in poor apoptotic response, cell cycle changes showed concentration-dependent shifts indicating a dual mechanism of activity. This study also reviews the results of preliminary biological screening, which demonstrates that 1 displays a unique pattern of anticancer activity with at least two mechanisms involved.",
journal = "RSC Advances",
title = "Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines",
volume = "6",
number = "110",
pages = "108726-108740",
doi = "10.1039/c6ra24604d"
}
Filipović, N. R., Bjelogrlic, S., Todorović, T. R., Blagojevic, V. A., Muller, C. D., Marinković, A. D., Vujčić, M. T., Janović, B. S., Malesevic, A. S., Begovic, N., Senćanski, M. V.,& Minic, D. M.. (2016). Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines. in RSC Advances, 6(110), 108726-108740.
https://doi.org/10.1039/c6ra24604d
Filipović NR, Bjelogrlic S, Todorović TR, Blagojevic VA, Muller CD, Marinković AD, Vujčić MT, Janović BS, Malesevic AS, Begovic N, Senćanski MV, Minic DM. Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines. in RSC Advances. 2016;6(110):108726-108740.
doi:10.1039/c6ra24604d .
Filipović, Nenad R., Bjelogrlic, Snezana, Todorović, Tamara R., Blagojevic, Vladimir A., Muller, Christian D., Marinković, Aleksandar D., Vujčić, Miroslava T., Janović, Barbara S., Malesevic, Aleksandar S., Begovic, Nebojsa, Senćanski, Milan V., Minic, Dragica M., "Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines" in RSC Advances, 6, no. 110 (2016):108726-108740,
https://doi.org/10.1039/c6ra24604d . .
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Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA

Obradović, Nina; Đorđević, Nataša; Filipović, Suzana; Marković, Smilja ; Kosanović, Darko; Mitrić, Miodrag; Pavlović, Vladimir B.

(Springer, 2016)

TY  - JOUR
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Filipović, Suzana
AU  - Marković, Smilja 
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/999
AB  - Since cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2) (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 A degrees C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric analysis were used. Kissingers equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 A degrees C, comparing to the literature data.
PB  - Springer
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA
VL  - 124
IS  - 2
SP  - 667
EP  - 673
DO  - 10.1007/s10973-015-5132-9
ER  - 
@article{
author = "Obradović, Nina and Đorđević, Nataša and Filipović, Suzana and Marković, Smilja  and Kosanović, Darko and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2016",
abstract = "Since cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2) (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 A degrees C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric analysis were used. Kissingers equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 A degrees C, comparing to the literature data.",
publisher = "Springer",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA",
volume = "124",
number = "2",
pages = "667-673",
doi = "10.1007/s10973-015-5132-9"
}
Obradović, N., Đorđević, N., Filipović, S., Marković, S., Kosanović, D., Mitrić, M.,& Pavlović, V. B.. (2016). Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA. in Journal of Thermal Analysis and Calorimetry
Springer., 124(2), 667-673.
https://doi.org/10.1007/s10973-015-5132-9
Obradović N, Đorđević N, Filipović S, Marković S, Kosanović D, Mitrić M, Pavlović VB. Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA. in Journal of Thermal Analysis and Calorimetry. 2016;124(2):667-673.
doi:10.1007/s10973-015-5132-9 .
Obradović, Nina, Đorđević, Nataša, Filipović, Suzana, Marković, Smilja , Kosanović, Darko, Mitrić, Miodrag, Pavlović, Vladimir B., "Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA" in Journal of Thermal Analysis and Calorimetry, 124, no. 2 (2016):667-673,
https://doi.org/10.1007/s10973-015-5132-9 . .
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