TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Pavlović, Vladimir
AU  - Mirković, Miljana
AU  - Vrbica, Boško
AU  - Novaković, Irena
AU  - Stanković, Dalibor
AU  - Kremenović, Aleksandar
AU  - Uskoković, Vuk
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13175
AB  - Metals and metal oxides have subpar antibacterial activities compared to those of small-molecule antibiotics, yet there are hopes that with proper compositional and structural adjustments this gap might be bridged. In this study, titanium dioxide (TiO2) nanoparticles were mechanically activated and combined with particulate silver through simple reduction process elicited by UV irradiation and assisted with the ultrasound. The resulting powders in various combinations (Ag vs. no Ag, activated vs. non-activated) were characterized using a range of experimental techniques and assessed for their antibacterial activities. The preparation procedure presented in this work prevails over the disadvantages of many chemical routes, most critically by avoiding the use of toxic substances. The mechanical activation did not reduce the particle size or crystallinity of TiO2 nor did it consistently alter the bandgap, yet it enabled the doubling of the amount of silver incorporable into the material. Further, while both mechanical activation and the addition of silver in the amount not exceeding 0.5 wt% produced barely detectable structural changes in the material, they both augmented its antibacterial activity. The precursor TiO2 powder produced no inhibition zone against any of the four bacterial species tested, while the mechanical activation of TiO2 led to the formation of distinct inhibition zones against each of the four bacterial species tested. The addition of silver to activated TiO2 further widened the inhibition zones and it also imparted the antibacterial activity to non-activated TiO2. The boost in the antibacterial activity achieved by the short mechanical activation was of a similar magnitude as the boost obtained after the addition of silver. The antibacterial activity was not different for different species when no silver was added to the system. However, with the addition of silver, species selectivity was obtained, as the composites were more effective against the two Gram-negative species (Escherichia coli and Klebsiella pneumoniae) than against the two Gram-positive ones (Staphylococcus aureus and Bacillus subtilis). The antibacterial activity increased with the addition of silver in the broth assay, but it was mediocre compared to that detected in the agar assay, attesting to the poor dispersability of the powders and their best performance when the bacterial cells migrate to the composite surface than vice versa. The findings of this study give hope that with appropriate microstructural or compositional alterations, the antibacterial activity of metal oxide powders and inorganic materials in general can be made comparable to that of small-molecule antibiotics.
T2  - Colloids and Surfaces A: Physicochemical and Engineering Aspects
T1  - Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles
VL  - 691
SP  - 133890
DO  - 10.1016/j.colsurfa.2024.133890
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Pavlović, Vladimir and Mirković, Miljana and Vrbica, Boško and Novaković, Irena and Stanković, Dalibor and Kremenović, Aleksandar and Uskoković, Vuk",
year = "2024",
abstract = "Metals and metal oxides have subpar antibacterial activities compared to those of small-molecule antibiotics, yet there are hopes that with proper compositional and structural adjustments this gap might be bridged. In this study, titanium dioxide (TiO2) nanoparticles were mechanically activated and combined with particulate silver through simple reduction process elicited by UV irradiation and assisted with the ultrasound. The resulting powders in various combinations (Ag vs. no Ag, activated vs. non-activated) were characterized using a range of experimental techniques and assessed for their antibacterial activities. The preparation procedure presented in this work prevails over the disadvantages of many chemical routes, most critically by avoiding the use of toxic substances. The mechanical activation did not reduce the particle size or crystallinity of TiO2 nor did it consistently alter the bandgap, yet it enabled the doubling of the amount of silver incorporable into the material. Further, while both mechanical activation and the addition of silver in the amount not exceeding 0.5 wt% produced barely detectable structural changes in the material, they both augmented its antibacterial activity. The precursor TiO2 powder produced no inhibition zone against any of the four bacterial species tested, while the mechanical activation of TiO2 led to the formation of distinct inhibition zones against each of the four bacterial species tested. The addition of silver to activated TiO2 further widened the inhibition zones and it also imparted the antibacterial activity to non-activated TiO2. The boost in the antibacterial activity achieved by the short mechanical activation was of a similar magnitude as the boost obtained after the addition of silver. The antibacterial activity was not different for different species when no silver was added to the system. However, with the addition of silver, species selectivity was obtained, as the composites were more effective against the two Gram-negative species (Escherichia coli and Klebsiella pneumoniae) than against the two Gram-positive ones (Staphylococcus aureus and Bacillus subtilis). The antibacterial activity increased with the addition of silver in the broth assay, but it was mediocre compared to that detected in the agar assay, attesting to the poor dispersability of the powders and their best performance when the bacterial cells migrate to the composite surface than vice versa. The findings of this study give hope that with appropriate microstructural or compositional alterations, the antibacterial activity of metal oxide powders and inorganic materials in general can be made comparable to that of small-molecule antibiotics.",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
title = "Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles",
volume = "691",
pages = "133890",
doi = "10.1016/j.colsurfa.2024.133890"
}

Anđelković, L., Šuljagić, M., Pavlović, V., Mirković, M., Vrbica, B., Novaković, I., Stanković, D., Kremenović, A.,& Uskoković, V.. (2024). Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles. in Colloids and Surfaces A: Physicochemical and Engineering Aspects, 691, 133890.
https://doi.org/10.1016/j.colsurfa.2024.133890

Anđelković L, Šuljagić M, Pavlović V, Mirković M, Vrbica B, Novaković I, Stanković D, Kremenović A, Uskoković V. Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles. in Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2024;691:133890.
doi:10.1016/j.colsurfa.2024.133890 .

Anđelković, Ljubica, Šuljagić, Marija, Pavlović, Vladimir, Mirković, Miljana, Vrbica, Boško, Novaković, Irena, Stanković, Dalibor, Kremenović, Aleksandar, Uskoković, Vuk, "Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles" in Colloids and Surfaces A: Physicochemical and Engineering Aspects, 691 (2024):133890,
https://doi.org/10.1016/j.colsurfa.2024.133890 . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Petronijević, Ivan
AU  - Mirković, Miljana M.
AU  - Kremenović, Aleksandar S.
AU  - Džunuzović, Adis
AU  - Pavlović, Vladimir B.
AU  - Kalezić-Glišović, Aleksandra
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10690
AB  - To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.
T2  - Inorganics
T1  - BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
VL  - 11
IS  - 2
SP  - 51
DO  - 10.3390/inorganics11020051
ER  - 

@article{
author = "Šuljagić, Marija and Petronijević, Ivan and Mirković, Miljana M. and Kremenović, Aleksandar S. and Džunuzović, Adis and Pavlović, Vladimir B. and Kalezić-Glišović, Aleksandra and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.",
journal = "Inorganics",
title = "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties",
volume = "11",
number = "2",
pages = "51",
doi = "10.3390/inorganics11020051"
}

Šuljagić, M., Petronijević, I., Mirković, M. M., Kremenović, A. S., Džunuzović, A., Pavlović, V. B., Kalezić-Glišović, A.,& Anđelković, L.. (2023). BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics, 11(2), 51.
https://doi.org/10.3390/inorganics11020051

Šuljagić M, Petronijević I, Mirković MM, Kremenović AS, Džunuzović A, Pavlović VB, Kalezić-Glišović A, Anđelković L. BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics. 2023;11(2):51.
doi:10.3390/inorganics11020051 .

Šuljagić, Marija, Petronijević, Ivan, Mirković, Miljana M., Kremenović, Aleksandar S., Džunuzović, Adis, Pavlović, Vladimir B., Kalezić-Glišović, Aleksandra, Anđelković, Ljubica, "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, 11, no. 2 (2023):51,
https://doi.org/10.3390/inorganics11020051 . .

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vera P.
AU  - Petronijević, Ivan
AU  - Stanković, Dalibor M.
AU  - Jeremić, Dejan
AU  - Uskoković, Vuk
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10935
AB  - The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition
VL  - 49
IS  - 14, Part A
SP  - 23491
EP  - 23498
DO  - 10.1016/j.ceramint.2023.04.182
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Mirković, Miljana and Pavlović, Vera P. and Petronijević, Ivan and Stanković, Dalibor M. and Jeremić, Dejan and Uskoković, Vuk",
year = "2023",
abstract = "The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition",
volume = "49",
number = "14, Part A",
pages = "23491-23498",
doi = "10.1016/j.ceramint.2023.04.182"
}

Anđelković, L., Šuljagić, M., Mirković, M., Pavlović, V. P., Petronijević, I., Stanković, D. M., Jeremić, D.,& Uskoković, V.. (2023). Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International, 49(14, Part A), 23491-23498.
https://doi.org/10.1016/j.ceramint.2023.04.182

Anđelković L, Šuljagić M, Mirković M, Pavlović VP, Petronijević I, Stanković DM, Jeremić D, Uskoković V. Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International. 2023;49(14, Part A):23491-23498.
doi:10.1016/j.ceramint.2023.04.182 .

Anđelković, Ljubica, Šuljagić, Marija, Mirković, Miljana, Pavlović, Vera P., Petronijević, Ivan, Stanković, Dalibor M., Jeremić, Dejan, Uskoković, Vuk, "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition" in Ceramics International, 49, no. 14, Part A (2023):23491-23498,
https://doi.org/10.1016/j.ceramint.2023.04.182 . .

TY  - CONF
AU  - Perić, Marko
AU  - Vuković, George
AU  - Knežević, Sanja
AU  - Nikolić, Milan
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Nenadović, Snežana
AU  - Ivanović, Marija M.
AU  - Mirković, Miljana
AU  - Pavlović, Vladmir B.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11279
AB  - Radiation shielding is a crucial precautionary measure in decreasing the dose of exposure medical personnel experience. The physical dimensions of these shields, specifically thickness and shape, are dependent on the type of radiation, energy and specific radioactivity. Currently, the most common radiation shielding equipment is made of lead, tungsten or uranium. Although these heavy metals have favorable shielding properties against ionizing radiation, protective garments such as lead aprons are heavy to wear and can pose significant health risks. Taking this into account, the primary goal of this study is to understand the radiation shielding properties of lead-free polymer geopolymer-polyurethane based composites. The geopolymer was synthesized using an 80%-20% mixture of fly ash and a bio-polyol substrate which was subsequently homogenized using MDI44. As a result, 6 samples of the geopolymer-polyurethane based composites were fabricated of which 5 were 90%-10% compositions between the mixture and varying concentrations of BaSO4 and Bi2O3 respectively. The last sample consisted of the pure fly ash/bio-polyol mixture. XRF and ICP analysis was used to chemically characterize the fly ash. The composite structures were analyzed using XRD, while the microstructural morphology was investigated using SEM techniques. Utilizing an energy-dispersive x-ray spectrometer (EDS), elemental abundance and agglomerating behavior was analyzed for each composite variant. The X-ray attenuation measurements pointed out that the obtained composites have the potential for a design of lead-free protective clothing against X-ray shielding in medical applications.
PB  - Bucharest: SRMNIM
C3  - Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania
T1  - Lead Free Polymer Composites for Radiation Shielding
SP  - 17
EP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11279
ER  - 

@conference{
author = "Perić, Marko and Vuković, George and Knežević, Sanja and Nikolić, Milan and Šuljagić, Marija and Anđelković, Ljubica and Nenadović, Snežana and Ivanović, Marija M. and Mirković, Miljana and Pavlović, Vladmir B.",
year = "2023",
abstract = "Radiation shielding is a crucial precautionary measure in decreasing the dose of exposure medical personnel experience. The physical dimensions of these shields, specifically thickness and shape, are dependent on the type of radiation, energy and specific radioactivity. Currently, the most common radiation shielding equipment is made of lead, tungsten or uranium. Although these heavy metals have favorable shielding properties against ionizing radiation, protective garments such as lead aprons are heavy to wear and can pose significant health risks. Taking this into account, the primary goal of this study is to understand the radiation shielding properties of lead-free polymer geopolymer-polyurethane based composites. The geopolymer was synthesized using an 80%-20% mixture of fly ash and a bio-polyol substrate which was subsequently homogenized using MDI44. As a result, 6 samples of the geopolymer-polyurethane based composites were fabricated of which 5 were 90%-10% compositions between the mixture and varying concentrations of BaSO4 and Bi2O3 respectively. The last sample consisted of the pure fly ash/bio-polyol mixture. XRF and ICP analysis was used to chemically characterize the fly ash. The composite structures were analyzed using XRD, while the microstructural morphology was investigated using SEM techniques. Utilizing an energy-dispersive x-ray spectrometer (EDS), elemental abundance and agglomerating behavior was analyzed for each composite variant. The X-ray attenuation measurements pointed out that the obtained composites have the potential for a design of lead-free protective clothing against X-ray shielding in medical applications.",
publisher = "Bucharest: SRMNIM",
journal = "Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania",
title = "Lead Free Polymer Composites for Radiation Shielding",
pages = "17-17",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11279"
}

Perić, M., Vuković, G., Knežević, S., Nikolić, M., Šuljagić, M., Anđelković, L., Nenadović, S., Ivanović, M. M., Mirković, M.,& Pavlović, V. B.. (2023). Lead Free Polymer Composites for Radiation Shielding. in Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania
Bucharest: SRMNIM., 17-17.
https://hdl.handle.net/21.15107/rcub_vinar_11279

Perić M, Vuković G, Knežević S, Nikolić M, Šuljagić M, Anđelković L, Nenadović S, Ivanović MM, Mirković M, Pavlović VB. Lead Free Polymer Composites for Radiation Shielding. in Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania. 2023;:17-17.
https://hdl.handle.net/21.15107/rcub_vinar_11279 .

Perić, Marko, Vuković, George, Knežević, Sanja, Nikolić, Milan, Šuljagić, Marija, Anđelković, Ljubica, Nenadović, Snežana, Ivanović, Marija M., Mirković, Miljana, Pavlović, Vladmir B., "Lead Free Polymer Composites for Radiation Shielding" in Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania (2023):17-17,
https://hdl.handle.net/21.15107/rcub_vinar_11279 .

TY  - JOUR
AU  - Đukić, Dunja
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Pavlović, Vera
AU  - Bučevac, Dušan
AU  - Vrbica, Boško
AU  - Mirković, Miljana M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10433
AB  - The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.
T2  - Science of Sintering
T1  - Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials
VL  - 54
IS  - 3
DO  - 10.2298/SOS2203287D
ER  - 

@article{
author = "Đukić, Dunja and Šuljagić, Marija and Anđelković, Ljubica and Pavlović, Vera and Bučevac, Dušan and Vrbica, Boško and Mirković, Miljana M.",
year = "2022",
abstract = "The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.",
journal = "Science of Sintering",
title = "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials",
volume = "54",
number = "3",
doi = "10.2298/SOS2203287D"
}

Đukić, D., Šuljagić, M., Anđelković, L., Pavlović, V., Bučevac, D., Vrbica, B.,& Mirković, M. M.. (2022). Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering, 54(3).
https://doi.org/10.2298/SOS2203287D

Đukić D, Šuljagić M, Anđelković L, Pavlović V, Bučevac D, Vrbica B, Mirković MM. Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering. 2022;54(3).
doi:10.2298/SOS2203287D .

Đukić, Dunja, Šuljagić, Marija, Anđelković, Ljubica, Pavlović, Vera, Bučevac, Dušan, Vrbica, Boško, Mirković, Miljana M., "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials" in Science of Sintering, 54, no. 3 (2022),
https://doi.org/10.2298/SOS2203287D . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Milenković, Milica
AU  - Uskoković, Vuk
AU  - Mirković, Miljana M.
AU  - Vrbica, Boško
AU  - Pavlović, Vladimir B.
AU  - Živković-Radovanović, Vukosava
AU  - Stanković, Dalibor M.
AU  - Anđelković, Ljubica
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10386
AB  - The emerging threat of bacterial resistance to antibiotics prompts the urgent search for biomaterials for the treatment of infectious disease. Here we report on the synthesis and characterization of a multiphasic nanocomposite comprising magnetic iron oxide and silver nanoparticles. The method of synthesis involved the combustion of a metalorganic complex and reduction of the silver ions that were exchanged and/or adsorbed on the surface of iron oxide. Different physical and chemical treatments coupled to the reduction process, including ultrasound and Lugol's iodine solution, respectively, homogenized the distribution of the silver nanoparticles on the iron oxide phase. Remarkably, using ascorbic acid as a reductant enhanced the magnetic properties of the material as a result of the reduction of the magnetic matrix alongside the silver cations. The treatment with ultrasound detached large amounts of silver from the iron oxide phase and resulted in the lowest amount of silver incorporated in the nanocomposite. Despite that, this treatment led to the highest antibacterial activity against both Gram-positive and Gram-negative strains, indicating that the homogeneity of the distribution of silver on the iron oxide matrix is a more important determinant of the antibacterial performance than the amount of silver incorporated in the material. At the same time, the treatment with Lugol's iodine equally increased the distribution homogeneity, but induced excessive ion exchange and crystal lattice substitutions, thereby adversely affecting the antibacterial performance. This has indicated that the mode of binding silver to iron oxide can compensate for the positive effects of homogeneous distribution with respect to the antibacterial performance.
T2  - Materials Today Communications
T1  - Silver distribution and binding mode as key determinants of the antimicrobial performance of iron oxide/silver nanocomposites
VL  - 32
SP  - 104157
DO  - 10.1016/j.mtcomm.2022.104157
ER  - 

@article{
author = "Šuljagić, Marija and Milenković, Milica and Uskoković, Vuk and Mirković, Miljana M. and Vrbica, Boško and Pavlović, Vladimir B. and Živković-Radovanović, Vukosava and Stanković, Dalibor M. and Anđelković, Ljubica",
year = "2022",
abstract = "The emerging threat of bacterial resistance to antibiotics prompts the urgent search for biomaterials for the treatment of infectious disease. Here we report on the synthesis and characterization of a multiphasic nanocomposite comprising magnetic iron oxide and silver nanoparticles. The method of synthesis involved the combustion of a metalorganic complex and reduction of the silver ions that were exchanged and/or adsorbed on the surface of iron oxide. Different physical and chemical treatments coupled to the reduction process, including ultrasound and Lugol's iodine solution, respectively, homogenized the distribution of the silver nanoparticles on the iron oxide phase. Remarkably, using ascorbic acid as a reductant enhanced the magnetic properties of the material as a result of the reduction of the magnetic matrix alongside the silver cations. The treatment with ultrasound detached large amounts of silver from the iron oxide phase and resulted in the lowest amount of silver incorporated in the nanocomposite. Despite that, this treatment led to the highest antibacterial activity against both Gram-positive and Gram-negative strains, indicating that the homogeneity of the distribution of silver on the iron oxide matrix is a more important determinant of the antibacterial performance than the amount of silver incorporated in the material. At the same time, the treatment with Lugol's iodine equally increased the distribution homogeneity, but induced excessive ion exchange and crystal lattice substitutions, thereby adversely affecting the antibacterial performance. This has indicated that the mode of binding silver to iron oxide can compensate for the positive effects of homogeneous distribution with respect to the antibacterial performance.",
journal = "Materials Today Communications",
title = "Silver distribution and binding mode as key determinants of the antimicrobial performance of iron oxide/silver nanocomposites",
volume = "32",
pages = "104157",
doi = "10.1016/j.mtcomm.2022.104157"
}

Šuljagić, M., Milenković, M., Uskoković, V., Mirković, M. M., Vrbica, B., Pavlović, V. B., Živković-Radovanović, V., Stanković, D. M.,& Anđelković, L.. (2022). Silver distribution and binding mode as key determinants of the antimicrobial performance of iron oxide/silver nanocomposites. in Materials Today Communications, 32, 104157.
https://doi.org/10.1016/j.mtcomm.2022.104157

Šuljagić M, Milenković M, Uskoković V, Mirković MM, Vrbica B, Pavlović VB, Živković-Radovanović V, Stanković DM, Anđelković L. Silver distribution and binding mode as key determinants of the antimicrobial performance of iron oxide/silver nanocomposites. in Materials Today Communications. 2022;32:104157.
doi:10.1016/j.mtcomm.2022.104157 .

Šuljagić, Marija, Milenković, Milica, Uskoković, Vuk, Mirković, Miljana M., Vrbica, Boško, Pavlović, Vladimir B., Živković-Radovanović, Vukosava, Stanković, Dalibor M., Anđelković, Ljubica, "Silver distribution and binding mode as key determinants of the antimicrobial performance of iron oxide/silver nanocomposites" in Materials Today Communications, 32 (2022):104157,
https://doi.org/10.1016/j.mtcomm.2022.104157 . .

TY  - JOUR
AU  - Stanković, Dalibor M.
AU  - Mirković, Marija
AU  - Pavlović, Vladimir B.
AU  - Petronijević, Ivan M.
AU  - Jeremić, Dejan
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10600
AB  - Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.
T2  - Russian Journal of Inorganic Chemistry
T1  - Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid
VL  - 67
IS  - Suppl. 1
SP  - S13
EP  - S21
DO  - 10.1134/S003602362260201X
ER  - 

@article{
author = "Stanković, Dalibor M. and Mirković, Marija and Pavlović, Vladimir B. and Petronijević, Ivan M. and Jeremić, Dejan and Anđelković, Ljubica and Šuljagić, Marija",
year = "2022",
abstract = "Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Inorganic Chemistry",
title = "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid",
volume = "67",
number = "Suppl. 1",
pages = "S13-S21",
doi = "10.1134/S003602362260201X"
}

Stanković, D. M., Mirković, M., Pavlović, V. B., Petronijević, I. M., Jeremić, D., Anđelković, L.,& Šuljagić, M.. (2022). Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry, 67(Suppl. 1), S13-S21.
https://doi.org/10.1134/S003602362260201X

Stanković DM, Mirković M, Pavlović VB, Petronijević IM, Jeremić D, Anđelković L, Šuljagić M. Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry. 2022;67(Suppl. 1):S13-S21.
doi:10.1134/S003602362260201X .

Stanković, Dalibor M., Mirković, Marija, Pavlović, Vladimir B., Petronijević, Ivan M., Jeremić, Dejan, Anđelković, Ljubica, Šuljagić, Marija, "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid" in Russian Journal of Inorganic Chemistry, 67, no. Suppl. 1 (2022):S13-S21,
https://doi.org/10.1134/S003602362260201X . .

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

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

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

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

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