TY  - JOUR
AU  - Matić, Ivana Z.
AU  - Mraković, Ana
AU  - Rakočević, Zlatko
AU  - Stoiljković, Milovan
AU  - Pavlović, Vladimir B.
AU  - Momić, Tatjana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11544
AB  - Background: Although luteolin has been confirmed as potent anticancer agent, its potential application as therapeutic is limited by its water solubility. To overcome this shortcoming nanoparticle technology approach was applied. Owing to their proven low toxicity and the possibility to be easily functionalized gold nanoparticles (AuNP) were the nanosystem of choice used in this study. Novel luteolin capped gold nanoparticles (AuNPL) were synthesized and their anticancer effect towards human cervical adenocarcinoma HeLa cells was investigated in vitro. Methods: AuNPL were synthesized by reducing chloroauric acid by trisodium citrate with subsequent addition of luteoline during synthesis and their physicochemical characterization was done. AuNPL cytotoxicity against HeLa, human malignant melanoma A375, and normal human keratinocytes HaCaT cells was tested by MTT cell survival assay, and their IC50 values were determined. The capability of AuNPL to induce cell cycle arrest and apoptosis in HeLa cells were demonstrated by flow cytometry. The antioxidant activity of AuNPL was assessed by DPPH⋅ and ABTS⋅þ scavenging assays. Cytoprotective properties of AuNPL towards HaCaT cells were examined by measuring the physiological and H2O2 induced intracellular reactive oxygen species (ROS) levels using flow cytometry. Also, genotoxicity of AuNPL in HaCaT cells was investigated by the single cell alkaline comet assay. Results: Spherical AuNPL, stable in aqueous solution up to six months at 4 ◦C were obtained in the synthesis. The selectivity in the cytotoxic action of AuNPL on HeLa and A375 cancer cells compared with their cytotoxicity on normal keratinocytes HaCaT was observed. AuNPL exerted their cytotoxic activity against HeLa cells through accumulation of the cells in the subG1 phase of the cell cycle, inducing the apoptotic cell death mediated by the activation of caspase-3 − 8, and − 9. AuNPL antioxidative potential was confirmed by DPPH⋅ and ABTS⋅þ scavenging assays. IC50 concentration of AuNPL exerted cytoprotective effect against HaCaT cells by the significant reduction of the physiological intracellular ROS level. Additionally, AuNPL were shown as more cytoprotective towards HaCaT cells then luteolin due to the more successful elimination of H2O2 induced intracellular ROS. Moreover, nontoxic concentrations of AuNPL did not cause considerable DNA damage of HaCaT cells, indicating low genotoxicity of the nanoparticles.
T2  - Journal of Trace Elements in Medicine and Biology
T1  - Anticancer effect of novel luteolin capped gold nanoparticles selectively cytotoxic towards human cervical adenocarcinoma HeLa cells: An in vitro approach
VL  - 80
SP  - 127286
DO  - 10.1016/j.jtemb.2023.127286
ER  - 

@article{
author = "Matić, Ivana Z. and Mraković, Ana and Rakočević, Zlatko and Stoiljković, Milovan and Pavlović, Vladimir B. and Momić, Tatjana",
year = "2023",
abstract = "Background: Although luteolin has been confirmed as potent anticancer agent, its potential application as therapeutic is limited by its water solubility. To overcome this shortcoming nanoparticle technology approach was applied. Owing to their proven low toxicity and the possibility to be easily functionalized gold nanoparticles (AuNP) were the nanosystem of choice used in this study. Novel luteolin capped gold nanoparticles (AuNPL) were synthesized and their anticancer effect towards human cervical adenocarcinoma HeLa cells was investigated in vitro. Methods: AuNPL were synthesized by reducing chloroauric acid by trisodium citrate with subsequent addition of luteoline during synthesis and their physicochemical characterization was done. AuNPL cytotoxicity against HeLa, human malignant melanoma A375, and normal human keratinocytes HaCaT cells was tested by MTT cell survival assay, and their IC50 values were determined. The capability of AuNPL to induce cell cycle arrest and apoptosis in HeLa cells were demonstrated by flow cytometry. The antioxidant activity of AuNPL was assessed by DPPH⋅ and ABTS⋅þ scavenging assays. Cytoprotective properties of AuNPL towards HaCaT cells were examined by measuring the physiological and H2O2 induced intracellular reactive oxygen species (ROS) levels using flow cytometry. Also, genotoxicity of AuNPL in HaCaT cells was investigated by the single cell alkaline comet assay. Results: Spherical AuNPL, stable in aqueous solution up to six months at 4 ◦C were obtained in the synthesis. The selectivity in the cytotoxic action of AuNPL on HeLa and A375 cancer cells compared with their cytotoxicity on normal keratinocytes HaCaT was observed. AuNPL exerted their cytotoxic activity against HeLa cells through accumulation of the cells in the subG1 phase of the cell cycle, inducing the apoptotic cell death mediated by the activation of caspase-3 − 8, and − 9. AuNPL antioxidative potential was confirmed by DPPH⋅ and ABTS⋅þ scavenging assays. IC50 concentration of AuNPL exerted cytoprotective effect against HaCaT cells by the significant reduction of the physiological intracellular ROS level. Additionally, AuNPL were shown as more cytoprotective towards HaCaT cells then luteolin due to the more successful elimination of H2O2 induced intracellular ROS. Moreover, nontoxic concentrations of AuNPL did not cause considerable DNA damage of HaCaT cells, indicating low genotoxicity of the nanoparticles.",
journal = "Journal of Trace Elements in Medicine and Biology",
title = "Anticancer effect of novel luteolin capped gold nanoparticles selectively cytotoxic towards human cervical adenocarcinoma HeLa cells: An in vitro approach",
volume = "80",
pages = "127286",
doi = "10.1016/j.jtemb.2023.127286"
}

Matić, I. Z., Mraković, A., Rakočević, Z., Stoiljković, M., Pavlović, V. B.,& Momić, T.. (2023). Anticancer effect of novel luteolin capped gold nanoparticles selectively cytotoxic towards human cervical adenocarcinoma HeLa cells: An in vitro approach. in Journal of Trace Elements in Medicine and Biology, 80, 127286.
https://doi.org/10.1016/j.jtemb.2023.127286

Matić IZ, Mraković A, Rakočević Z, Stoiljković M, Pavlović VB, Momić T. Anticancer effect of novel luteolin capped gold nanoparticles selectively cytotoxic towards human cervical adenocarcinoma HeLa cells: An in vitro approach. in Journal of Trace Elements in Medicine and Biology. 2023;80:127286.
doi:10.1016/j.jtemb.2023.127286 .

Matić, Ivana Z., Mraković, Ana, Rakočević, Zlatko, Stoiljković, Milovan, Pavlović, Vladimir B., Momić, Tatjana, "Anticancer effect of novel luteolin capped gold nanoparticles selectively cytotoxic towards human cervical adenocarcinoma HeLa cells: An in vitro approach" in Journal of Trace Elements in Medicine and Biology, 80 (2023):127286,
https://doi.org/10.1016/j.jtemb.2023.127286 . .

TY  - JOUR
AU  - Rmuš Mravik, Jelena
AU  - Milanović, Igor
AU  - Milošević Govedarović, Sanja
AU  - Mraković, Ana
AU  - Korneeva, Ekaterina
AU  - Stojković Simatović, Ivana
AU  - Kurko, Sandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11187
AB  - Molybdenum disulfide (MoS2) is considered promising noble metal-free catalysts for the hydrogen evolution reaction (HER). Whereas the bulk MoS2 does not exhibit significant activity, the catalytic properties of various nanostructures are noticeable. Therefore we synthesized flower-like molybdenum disulfide with the simple, one-step hydrothermal method. To enhance the catalytic activity of the material, low-energy ion irradiation is employed. As-prepared MoS2 is irradiated with hydrogen and carbon ions of various energies (20–40 keV) and fluences (1014-1017 ion/cm2). Our results show that irradiation has beneficial influence on MoS2 catalytic activity toward hydrogen evolution reaction. By producing morphological changes and defects in the structure, ion irradiation also impacts the conductivity of the material, which shows predominant effect on hydrogen evolution. The increase of current density at an overpotential of 300 mV with hydrogen ion irradiation is even 6 times higher than for as-synthesized catalyst.
T2  - International Journal of Hydrogen Energy
T1  - Improvement of MoS2 electrocatalytic activity for hydrogen evolution reaction by ion irradiation
VL  - 48
IS  - 98
SP  - 38676
EP  - 38685
DO  - 10.1016/j.ijhydene.2023.06.178
ER  - 

@article{
author = "Rmuš Mravik, Jelena and Milanović, Igor and Milošević Govedarović, Sanja and Mraković, Ana and Korneeva, Ekaterina and Stojković Simatović, Ivana and Kurko, Sandra",
year = "2023",
abstract = "Molybdenum disulfide (MoS2) is considered promising noble metal-free catalysts for the hydrogen evolution reaction (HER). Whereas the bulk MoS2 does not exhibit significant activity, the catalytic properties of various nanostructures are noticeable. Therefore we synthesized flower-like molybdenum disulfide with the simple, one-step hydrothermal method. To enhance the catalytic activity of the material, low-energy ion irradiation is employed. As-prepared MoS2 is irradiated with hydrogen and carbon ions of various energies (20–40 keV) and fluences (1014-1017 ion/cm2). Our results show that irradiation has beneficial influence on MoS2 catalytic activity toward hydrogen evolution reaction. By producing morphological changes and defects in the structure, ion irradiation also impacts the conductivity of the material, which shows predominant effect on hydrogen evolution. The increase of current density at an overpotential of 300 mV with hydrogen ion irradiation is even 6 times higher than for as-synthesized catalyst.",
journal = "International Journal of Hydrogen Energy",
title = "Improvement of MoS2 electrocatalytic activity for hydrogen evolution reaction by ion irradiation",
volume = "48",
number = "98",
pages = "38676-38685",
doi = "10.1016/j.ijhydene.2023.06.178"
}

Rmuš Mravik, J., Milanović, I., Milošević Govedarović, S., Mraković, A., Korneeva, E., Stojković Simatović, I.,& Kurko, S.. (2023). Improvement of MoS2 electrocatalytic activity for hydrogen evolution reaction by ion irradiation. in International Journal of Hydrogen Energy, 48(98), 38676-38685.
https://doi.org/10.1016/j.ijhydene.2023.06.178

Rmuš Mravik J, Milanović I, Milošević Govedarović S, Mraković A, Korneeva E, Stojković Simatović I, Kurko S. Improvement of MoS2 electrocatalytic activity for hydrogen evolution reaction by ion irradiation. in International Journal of Hydrogen Energy. 2023;48(98):38676-38685.
doi:10.1016/j.ijhydene.2023.06.178 .

Rmuš Mravik, Jelena, Milanović, Igor, Milošević Govedarović, Sanja, Mraković, Ana, Korneeva, Ekaterina, Stojković Simatović, Ivana, Kurko, Sandra, "Improvement of MoS2 electrocatalytic activity for hydrogen evolution reaction by ion irradiation" in International Journal of Hydrogen Energy, 48, no. 98 (2023):38676-38685,
https://doi.org/10.1016/j.ijhydene.2023.06.178 . .

TY  - CONF
AU  - Stanić, Vojislav
AU  - Omerašević, Mia
AU  - Mutavdžić, M.
AU  - Mraković, Ana
AU  - Veljović, Đ.
AU  - Marinović-Cincović, Milena
AU  - Jovanović, D.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11811
AB  - Lanthanide-doped apatite biomaterials are highly promising in medicine because of their excellent chemical and optical properties. In this study, Eu(III)-doped fluorapatite particles have been successfully synthesized by a wet method at room temperature. The characterization study from XRD showed that obtained powder is monophasic fluorapatite. Biomaterials based on fluorapatite (Ca10(PO4)5F2) doped with lanthanide elements are ideal contrast agents for a variety of biomedical applications, e.g. detection, imaging, cell tracking, and therapy [1]. Eu(III) received a great deal of interest because of several desirable properties like emission in the visible region, long luminescent lifetime, and less sensitivity to quenching by singlet oxygen [2].
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - Synthesis of europium-doped fluorapatite as a promising luminescent biomaterial
SP  - 85
EP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11811
ER  - 

@conference{
author = "Stanić, Vojislav and Omerašević, Mia and Mutavdžić, M. and Mraković, Ana and Veljović, Đ. and Marinović-Cincović, Milena and Jovanović, D.",
year = "2023",
abstract = "Lanthanide-doped apatite biomaterials are highly promising in medicine because of their excellent chemical and optical properties. In this study, Eu(III)-doped fluorapatite particles have been successfully synthesized by a wet method at room temperature. The characterization study from XRD showed that obtained powder is monophasic fluorapatite. Biomaterials based on fluorapatite (Ca10(PO4)5F2) doped with lanthanide elements are ideal contrast agents for a variety of biomedical applications, e.g. detection, imaging, cell tracking, and therapy [1]. Eu(III) received a great deal of interest because of several desirable properties like emission in the visible region, long luminescent lifetime, and less sensitivity to quenching by singlet oxygen [2].",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "Synthesis of europium-doped fluorapatite as a promising luminescent biomaterial",
pages = "85-85",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11811"
}

Stanić, V., Omerašević, M., Mutavdžić, M., Mraković, A., Veljović, Đ., Marinović-Cincović, M.,& Jovanović, D.. (2023). Synthesis of europium-doped fluorapatite as a promising luminescent biomaterial. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 85-85.
https://hdl.handle.net/21.15107/rcub_vinar_11811

Stanić V, Omerašević M, Mutavdžić M, Mraković A, Veljović Đ, Marinović-Cincović M, Jovanović D. Synthesis of europium-doped fluorapatite as a promising luminescent biomaterial. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:85-85.
https://hdl.handle.net/21.15107/rcub_vinar_11811 .

Stanić, Vojislav, Omerašević, Mia, Mutavdžić, M., Mraković, Ana, Veljović, Đ., Marinović-Cincović, Milena, Jovanović, D., "Synthesis of europium-doped fluorapatite as a promising luminescent biomaterial" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):85-85,
https://hdl.handle.net/21.15107/rcub_vinar_11811 .

TY  - CONF
AU  - Milojkov, Dušan
AU  - Mraković, Ana
AU  - Jovanović, Gvozden
AU  - Vuković, Nikola
AU  - Bugarčić, Mladen
AU  - Antanasković, Anja
AU  - Živković-Radovanović, Vukosava
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12302
AB  - Magnetic iron oxide nanomaterials, which enable a multitude of uses, are given special focus in the fields of biomedicine and environmental protection. The detection, sorption, and/or degradation of inorganic (lead, chromium, arsenic, and cadmium), organic (dyes, pharmaceuticals, pesticides, phenols, and benzene), and biological (viruses and bacteria) pollutants can all be effectively accomplished with the use of magnetic nanoparticles. Magnetic iron oxide nanomaterials are in particular focus for use as hyperthermia media in cancer treatment and as magnetic resonance imaging (MRI) contrast agents. The possibility of magnetic separation of such materials, due to their essential properties under the influence of an external magnetic field, reduces production costs and also prevents the production and accumulation of toxic waste. Among the many metal oxide nanomaterials, magnetite (Fe3O4) and maghemite (γ-Fe2O3) are currently the only two magnetic materials approved by the US Food and Drug Administration (FDA) for human use as iron deficiency therapeutics and as contrast agents for MRI. Here, we synthesized nanoparticles of magnetite (Fe3O4) by the method of reduction-precipitation and characterized. Additionally, potential binding of brilliant green dye on Fe3O4 and construction of innovative magnetic composite was investigated. The physicochemical features were explored using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM). XRD analysis confirms formation of the crystal phase of magnetite. The presence of magnetite nanoparticles is shown by typical groups for the peaks of iron compounds at a lower wavelength (≤ 700 cm-1 ) that are characteristic of the Fe-O bond. Morphological analyzes with FESEM showed that magnetite is a composite of nanospheres and nanorods that provide a large surface area. Dye binding study was performed using UVvisible and FTIR spectrometer.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications
SP  - 14
EP  - 14
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12302
ER  - 

@conference{
author = "Milojkov, Dušan and Mraković, Ana and Jovanović, Gvozden and Vuković, Nikola and Bugarčić, Mladen and Antanasković, Anja and Živković-Radovanović, Vukosava",
year = "2023",
abstract = "Magnetic iron oxide nanomaterials, which enable a multitude of uses, are given special focus in the fields of biomedicine and environmental protection. The detection, sorption, and/or degradation of inorganic (lead, chromium, arsenic, and cadmium), organic (dyes, pharmaceuticals, pesticides, phenols, and benzene), and biological (viruses and bacteria) pollutants can all be effectively accomplished with the use of magnetic nanoparticles. Magnetic iron oxide nanomaterials are in particular focus for use as hyperthermia media in cancer treatment and as magnetic resonance imaging (MRI) contrast agents. The possibility of magnetic separation of such materials, due to their essential properties under the influence of an external magnetic field, reduces production costs and also prevents the production and accumulation of toxic waste. Among the many metal oxide nanomaterials, magnetite (Fe3O4) and maghemite (γ-Fe2O3) are currently the only two magnetic materials approved by the US Food and Drug Administration (FDA) for human use as iron deficiency therapeutics and as contrast agents for MRI. Here, we synthesized nanoparticles of magnetite (Fe3O4) by the method of reduction-precipitation and characterized. Additionally, potential binding of brilliant green dye on Fe3O4 and construction of innovative magnetic composite was investigated. The physicochemical features were explored using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM). XRD analysis confirms formation of the crystal phase of magnetite. The presence of magnetite nanoparticles is shown by typical groups for the peaks of iron compounds at a lower wavelength (≤ 700 cm-1 ) that are characteristic of the Fe-O bond. Morphological analyzes with FESEM showed that magnetite is a composite of nanospheres and nanorods that provide a large surface area. Dye binding study was performed using UVvisible and FTIR spectrometer.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications",
pages = "14-14",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12302"
}

Milojkov, D., Mraković, A., Jovanović, G., Vuković, N., Bugarčić, M., Antanasković, A.,& Živković-Radovanović, V.. (2023). Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 14-14.
https://hdl.handle.net/21.15107/rcub_vinar_12302

Milojkov D, Mraković A, Jovanović G, Vuković N, Bugarčić M, Antanasković A, Živković-Radovanović V. Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:14-14.
https://hdl.handle.net/21.15107/rcub_vinar_12302 .

Milojkov, Dušan, Mraković, Ana, Jovanović, Gvozden, Vuković, Nikola, Bugarčić, Mladen, Antanasković, Anja, Živković-Radovanović, Vukosava, "Nanofabrication and characterisation of magnetic Fe3O4 nanostructures for potential environmental and biomedical applications" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):14-14,
https://hdl.handle.net/21.15107/rcub_vinar_12302 .

TY  - JOUR
AU  - Radenković, Marina
AU  - Momčilović, Miloš
AU  - Petrović, Jelena
AU  - Mraković, Ana Đ.
AU  - Relić, Dubravka
AU  - Popović, Aleksandar
AU  - Živković, Sanja
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10467
AB  - Presented research aimed to develop an alternative approach for the estimation of biosorption capability of sunflower husk. The acid-pretreated sunflower biomass was characterized by scanning electron microscopy combined with energy dispersive X-Ray spectroscopy (SEM-EDX) analysis and Fourier transform infrared (FTIR) spectroscopy. Biosorption efficiency has been evaluated using inductively coupled plasma optical emission spectroscopy (ICP-OES) and laser-induced breakdown spectroscopy (LIBS). The adsorption capacity of the adsorbent was determined as the function of the pH of the solution, the initial concentration of heavy metal solutions, and contact time. The optimal conditions were achieved after 15 min of contact at pH 6, while the percentage of the removal was from 80.0–98.7 %, depending on the element. The results obtained from the kinetic and isotherm studies show that maximum adsorption of ions was quickly reached and followed the pseudo-second-order kinetic model. Real samples were tested and obtained Ni values by LIBS method were 3100±200 and 1240±100 mg kg-1, while estimated values by the ICP-OES were 2995±20 and 1130±10 mg kg-1, respectively. The obtained results prove that LIBS method can be used as a “green alternative” for the evaluation of biosorption efficiency.
T2  - Journal of the Serbian Chemical Society
T1  - Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS
VL  - 87
IS  - 7-8
SP  - 939
EP  - 952
DO  - 10.2298/JSC220105022R
ER  - 

@article{
author = "Radenković, Marina and Momčilović, Miloš and Petrović, Jelena and Mraković, Ana Đ. and Relić, Dubravka and Popović, Aleksandar and Živković, Sanja",
year = "2022",
abstract = "Presented research aimed to develop an alternative approach for the estimation of biosorption capability of sunflower husk. The acid-pretreated sunflower biomass was characterized by scanning electron microscopy combined with energy dispersive X-Ray spectroscopy (SEM-EDX) analysis and Fourier transform infrared (FTIR) spectroscopy. Biosorption efficiency has been evaluated using inductively coupled plasma optical emission spectroscopy (ICP-OES) and laser-induced breakdown spectroscopy (LIBS). The adsorption capacity of the adsorbent was determined as the function of the pH of the solution, the initial concentration of heavy metal solutions, and contact time. The optimal conditions were achieved after 15 min of contact at pH 6, while the percentage of the removal was from 80.0–98.7 %, depending on the element. The results obtained from the kinetic and isotherm studies show that maximum adsorption of ions was quickly reached and followed the pseudo-second-order kinetic model. Real samples were tested and obtained Ni values by LIBS method were 3100±200 and 1240±100 mg kg-1, while estimated values by the ICP-OES were 2995±20 and 1130±10 mg kg-1, respectively. The obtained results prove that LIBS method can be used as a “green alternative” for the evaluation of biosorption efficiency.",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS",
volume = "87",
number = "7-8",
pages = "939-952",
doi = "10.2298/JSC220105022R"
}

Radenković, M., Momčilović, M., Petrović, J., Mraković, A. Đ., Relić, D., Popović, A.,& Živković, S.. (2022). Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS. in Journal of the Serbian Chemical Society, 87(7-8), 939-952.
https://doi.org/10.2298/JSC220105022R

Radenković M, Momčilović M, Petrović J, Mraković AĐ, Relić D, Popović A, Živković S. Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS. in Journal of the Serbian Chemical Society. 2022;87(7-8):939-952.
doi:10.2298/JSC220105022R .

Radenković, Marina, Momčilović, Miloš, Petrović, Jelena, Mraković, Ana Đ., Relić, Dubravka, Popović, Aleksandar, Živković, Sanja, "Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS" in Journal of the Serbian Chemical Society, 87, no. 7-8 (2022):939-952,
https://doi.org/10.2298/JSC220105022R . .

TY  - JOUR
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Rmuš, Jelena
AU  - Olejniczak, Andrzej
AU  - Mraković, Ana Đ.
AU  - Lazarević, Jasmina
AU  - Uskoković-Marković, Snežana
AU  - Lazarević, Nenad
AU  - Skuratov, Vladimir A.
AU  - Jovanović, Zoran
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10376
AB  - Ion beam irradiation is a versatile tool for structural modification andengineering of new materials. In this study, 12-tungstophosphoric acid (WPA)films of different thickness were spin-coated on platinized silicon substrate andirradiated with low energy hydrogen ions (10 keV) and swift heavy ions (Bi,Xe, and V) with energies up to 710 MeV. The different energy/fluence combi-nations allowed controllable structural changes that were investigated in detailusing Raman and Infrared spectroscopy. For 120-nm-thick WPA samples, theirradiation led to the decrease of intensity of the skeletal and W-Oc-W bands ofKeggin anion in order: Bi < V < Xe (for their applied energy/fluence combina-tion). Also, symmetry change of Keggin anion similar to the one observed inthe case of Keggin anions interacting with the supports was observed. For theselected ion beam irradiation parameters, xenon ion beam induced transforma-tion of WPA to polytungstate. For 20-μm-thick WPA samples, the irradiationwith hydrogen ion beam induced changes of skeletal vibrations and increasedindividualistic behavior of Keggin anions. As the fluence increased, theamount of the Keggin anions partially transformed to bronze also increased.Irradiation with vanadium also caused transformation to bronze-like structurebut with higher ratio of terminal W=Odbonds. The overall results show clearReceived: 9 February 2022Revised: 17 June 2022Accepted: 5 July 2022DOI: 10.1002/jrs.6423J Raman Spectrosc.2022;1–11.wileyonlinelibrary.com/journal/jrs© 2022 John Wiley & Sons Ltd.1correlation between degree of structural modification of WPA and thecalculated displacement per atom value. These results open possibilities forengineering new catalytically active structures of polyoxometalates with thehelp of ion beams.
T2  - Journal of Raman Spectroscopy
T1  - Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid
DO  - 10.1002/jrs.6423
ER  - 

@article{
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Rmuš, Jelena and Olejniczak, Andrzej and Mraković, Ana Đ. and Lazarević, Jasmina and Uskoković-Marković, Snežana and Lazarević, Nenad and Skuratov, Vladimir A. and Jovanović, Zoran",
year = "2022",
abstract = "Ion beam irradiation is a versatile tool for structural modification andengineering of new materials. In this study, 12-tungstophosphoric acid (WPA)films of different thickness were spin-coated on platinized silicon substrate andirradiated with low energy hydrogen ions (10 keV) and swift heavy ions (Bi,Xe, and V) with energies up to 710 MeV. The different energy/fluence combi-nations allowed controllable structural changes that were investigated in detailusing Raman and Infrared spectroscopy. For 120-nm-thick WPA samples, theirradiation led to the decrease of intensity of the skeletal and W-Oc-W bands ofKeggin anion in order: Bi < V < Xe (for their applied energy/fluence combina-tion). Also, symmetry change of Keggin anion similar to the one observed inthe case of Keggin anions interacting with the supports was observed. For theselected ion beam irradiation parameters, xenon ion beam induced transforma-tion of WPA to polytungstate. For 20-μm-thick WPA samples, the irradiationwith hydrogen ion beam induced changes of skeletal vibrations and increasedindividualistic behavior of Keggin anions. As the fluence increased, theamount of the Keggin anions partially transformed to bronze also increased.Irradiation with vanadium also caused transformation to bronze-like structurebut with higher ratio of terminal W=Odbonds. The overall results show clearReceived: 9 February 2022Revised: 17 June 2022Accepted: 5 July 2022DOI: 10.1002/jrs.6423J Raman Spectrosc.2022;1–11.wileyonlinelibrary.com/journal/jrs© 2022 John Wiley & Sons Ltd.1correlation between degree of structural modification of WPA and thecalculated displacement per atom value. These results open possibilities forengineering new catalytically active structures of polyoxometalates with thehelp of ion beams.",
journal = "Journal of Raman Spectroscopy",
title = "Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid",
doi = "10.1002/jrs.6423"
}

Mravik, Ž., Bajuk-Bogdanović, D. V., Jovanović, S., Rmuš, J., Olejniczak, A., Mraković, A. Đ., Lazarević, J., Uskoković-Marković, S., Lazarević, N., Skuratov, V. A.,& Jovanović, Z.. (2022). Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid. in Journal of Raman Spectroscopy.
https://doi.org/10.1002/jrs.6423

Mravik Ž, Bajuk-Bogdanović DV, Jovanović S, Rmuš J, Olejniczak A, Mraković AĐ, Lazarević J, Uskoković-Marković S, Lazarević N, Skuratov VA, Jovanović Z. Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid. in Journal of Raman Spectroscopy. 2022;.
doi:10.1002/jrs.6423 .

Mravik, Željko, Bajuk-Bogdanović, Danica V., Jovanović, Sonja, Rmuš, Jelena, Olejniczak, Andrzej, Mraković, Ana Đ., Lazarević, Jasmina, Uskoković-Marković, Snežana, Lazarević, Nenad, Skuratov, Vladimir A., Jovanović, Zoran, "Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid" in Journal of Raman Spectroscopy (2022),
https://doi.org/10.1002/jrs.6423 . .

TY  - CONF
AU  - Mraković, Ana
AU  - Krstić, Maja
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11474
AB  - The synthesis represents a crucial step for achieving the unique properties of nanomaterials. Gamma (γ) - radiation-induced synthesis possesses several advantages over other conventional synthetic routes such as production of clean materials, the possibility of simultaneous synthesis and sterilization, in-situ generation of radiolysis products and the lack of necessity for initiators and crosslinking reagents in the case of polymer-based materials fabrication. γ-radiation induced synthesis has been utilized in the development and modification of various types of systems, including metal, metal oxide and alloyed nanoparticles, carbon-based nanomaterials, polymer based nanomaterials and nanocomposites etc. In this lecture, fundamentals of radiation chemistry will be given with an emphasis on the synthesis of nanomaterials in aqueous solutions. The effects of the total dose, dose rate, and the addition of different solutes to tailoring the synthesized materials’ composition, form, shape, size and size distribution will be demonstrated. The possible applications of so obtained materials in industry and biomedicine will be presented.
PB  - Pavol Jozef Šafárik University in Košice, ŠAFÁRIKPRESS Publishing
C3  - SFEL 2022 : School of XFEL and Synchrotron Radiation Users : book of abstracts : November 6-10, 2022, Liptovský Ján, Slovakia
T1  - Radiation-Induced method for the controlled synthesis of nanostructured materials
SP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11474
ER  - 

@conference{
author = "Mraković, Ana and Krstić, Maja",
year = "2022",
abstract = "The synthesis represents a crucial step for achieving the unique properties of nanomaterials. Gamma (γ) - radiation-induced synthesis possesses several advantages over other conventional synthetic routes such as production of clean materials, the possibility of simultaneous synthesis and sterilization, in-situ generation of radiolysis products and the lack of necessity for initiators and crosslinking reagents in the case of polymer-based materials fabrication. γ-radiation induced synthesis has been utilized in the development and modification of various types of systems, including metal, metal oxide and alloyed nanoparticles, carbon-based nanomaterials, polymer based nanomaterials and nanocomposites etc. In this lecture, fundamentals of radiation chemistry will be given with an emphasis on the synthesis of nanomaterials in aqueous solutions. The effects of the total dose, dose rate, and the addition of different solutes to tailoring the synthesized materials’ composition, form, shape, size and size distribution will be demonstrated. The possible applications of so obtained materials in industry and biomedicine will be presented.",
publisher = "Pavol Jozef Šafárik University in Košice, ŠAFÁRIKPRESS Publishing",
journal = "SFEL 2022 : School of XFEL and Synchrotron Radiation Users : book of abstracts : November 6-10, 2022, Liptovský Ján, Slovakia",
title = "Radiation-Induced method for the controlled synthesis of nanostructured materials",
pages = "36",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11474"
}

Mraković, A.,& Krstić, M.. (2022). Radiation-Induced method for the controlled synthesis of nanostructured materials. in SFEL 2022 : School of XFEL and Synchrotron Radiation Users : book of abstracts : November 6-10, 2022, Liptovský Ján, Slovakia
Pavol Jozef Šafárik University in Košice, ŠAFÁRIKPRESS Publishing., 36.
https://hdl.handle.net/21.15107/rcub_vinar_11474

Mraković A, Krstić M. Radiation-Induced method for the controlled synthesis of nanostructured materials. in SFEL 2022 : School of XFEL and Synchrotron Radiation Users : book of abstracts : November 6-10, 2022, Liptovský Ján, Slovakia. 2022;:36.
https://hdl.handle.net/21.15107/rcub_vinar_11474 .

Mraković, Ana, Krstić, Maja, "Radiation-Induced method for the controlled synthesis of nanostructured materials" in SFEL 2022 : School of XFEL and Synchrotron Radiation Users : book of abstracts : November 6-10, 2022, Liptovský Ján, Slovakia (2022):36,
https://hdl.handle.net/21.15107/rcub_vinar_11474 .

TY  - CONF
AU  - Smičiklas, Ivana D.
AU  - Stamatović, Maria-Alexandra
AU  - Jović, Mihajlo D.
AU  - Coha, Ivana
AU  - Mraković, Ana Đ.
AU  - Šljivić-Ivanović, Marija Z.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10119
AB  - Kao sredstva za hemijsku dekontaminaciju često se koriste organske suspstance koje grade rastvorne komplekse sa jonima radionuklida poboljšavajući njihovo uklanjanje sa kontaminiranih površina, ali u isto vreme otežavajući tretman nastalog tečnog radioaktivnog otpada i povećavajući mobilnost radionuklida u životnoj sredini. U ovom radu izučavan je uticaj etilendiamintetrasirćetne kiseline (EDTA) i dietilentriaminpentasirćetne kiseline (DTPA) na uklanjanje radionuklida Sr iz simuliranog tečnog radioaktivnog otpada primenom sintetičkog (zeolit 4A) i prirodnog zeolita (klinoptilolit). Efikasnost uklanjanja jona Sr ispititana je u šaržnim uslovima, u funkciji vrste i koncentracije kompleksanata, i tipa zeolita, korišćenjem neaktivog stroncijuma kao hemijskog analoga 90Sr. Rezultati dobijeni pri različitim molskim odnosima Sr/kompleksant (1:0, 10:1, 1:1 i 1:10) pokazuju da rastuća koncentracija DTPA u rastvoru inhibira separaciju Sr jona značajnije nego EDTA na oba zeolita, kao i da se Sr u prisustvu oba kompleksanta efikasnije vezuje sintetičkim nego prirodnim zeolitom.
AB  - Organic substances that form soluble complexes with radionuclide ions are often used as chemical decontamination agents, improving their removal from contaminated surfaces, but at the same time complicating the treatment of liquid radioactive waste and increasing the mobility of radionuclides in the environment. In this paper, the influence of ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentacetic acid (DTPA) on the removal of Sr radionuclides from simulated liquid radioactive waste using synthetic (zeolite 4A) and natural zeolite (clinoptilolite) was studied. The efficiency of Sr ion removal was investigated in batch conditions, as a function of the type and concentration of complexants, and the type of zeolite, using inactive strontium as a chemical analogue of 90Sr. The results obtained at different molar ratios Sr/complexant (1:0, 10:1, 1:1 and 1:10) show that the increasing concentration of DTPA in the solution inhibits the sorption of Sr ions more significantly than EDTA on both zeolites, and that Sr is sorbed more efficiently in the presence of both complexants using synthetic than natural zeolite.
PB  - Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 31. симпозијум ДЗЗСЦГ : зборник радова
T1  - Uticaj organskih kompleksanata na separaciju jona Sr iz vodenih rastvora odabranim zeolitima
T1  - Influence of Organic Complexants on Sr Ion Separation from Aqueous Solutions by Selected Zeolites
SP  - 255
EP  - 261
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10119
ER  - 

@conference{
author = "Smičiklas, Ivana D. and Stamatović, Maria-Alexandra and Jović, Mihajlo D. and Coha, Ivana and Mraković, Ana Đ. and Šljivić-Ivanović, Marija Z.",
year = "2021",
abstract = "Kao sredstva za hemijsku dekontaminaciju često se koriste organske suspstance koje grade rastvorne komplekse sa jonima radionuklida poboljšavajući njihovo uklanjanje sa kontaminiranih površina, ali u isto vreme otežavajući tretman nastalog tečnog radioaktivnog otpada i povećavajući mobilnost radionuklida u životnoj sredini. U ovom radu izučavan je uticaj etilendiamintetrasirćetne kiseline (EDTA) i dietilentriaminpentasirćetne kiseline (DTPA) na uklanjanje radionuklida Sr iz simuliranog tečnog radioaktivnog otpada primenom sintetičkog (zeolit 4A) i prirodnog zeolita (klinoptilolit). Efikasnost uklanjanja jona Sr ispititana je u šaržnim uslovima, u funkciji vrste i koncentracije kompleksanata, i tipa zeolita, korišćenjem neaktivog stroncijuma kao hemijskog analoga 90Sr. Rezultati dobijeni pri različitim molskim odnosima Sr/kompleksant (1:0, 10:1, 1:1 i 1:10) pokazuju da rastuća koncentracija DTPA u rastvoru inhibira separaciju Sr jona značajnije nego EDTA na oba zeolita, kao i da se Sr u prisustvu oba kompleksanta efikasnije vezuje sintetičkim nego prirodnim zeolitom., Organic substances that form soluble complexes with radionuclide ions are often used as chemical decontamination agents, improving their removal from contaminated surfaces, but at the same time complicating the treatment of liquid radioactive waste and increasing the mobility of radionuclides in the environment. In this paper, the influence of ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentacetic acid (DTPA) on the removal of Sr radionuclides from simulated liquid radioactive waste using synthetic (zeolite 4A) and natural zeolite (clinoptilolite) was studied. The efficiency of Sr ion removal was investigated in batch conditions, as a function of the type and concentration of complexants, and the type of zeolite, using inactive strontium as a chemical analogue of 90Sr. The results obtained at different molar ratios Sr/complexant (1:0, 10:1, 1:1 and 1:10) show that the increasing concentration of DTPA in the solution inhibits the sorption of Sr ions more significantly than EDTA on both zeolites, and that Sr is sorbed more efficiently in the presence of both complexants using synthetic than natural zeolite.",
publisher = "Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "31. симпозијум ДЗЗСЦГ : зборник радова",
title = "Uticaj organskih kompleksanata na separaciju jona Sr iz vodenih rastvora odabranim zeolitima, Influence of Organic Complexants on Sr Ion Separation from Aqueous Solutions by Selected Zeolites",
pages = "255-261",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10119"
}

Smičiklas, I. D., Stamatović, M., Jović, M. D., Coha, I., Mraković, A. Đ.,& Šljivić-Ivanović, M. Z.. (2021). Uticaj organskih kompleksanata na separaciju jona Sr iz vodenih rastvora odabranim zeolitima. in 31. симпозијум ДЗЗСЦГ : зборник радова
Institut za nuklearne nauke "Vinča"., 255-261.
https://hdl.handle.net/21.15107/rcub_vinar_10119

Smičiklas ID, Stamatović M, Jović MD, Coha I, Mraković AĐ, Šljivić-Ivanović MZ. Uticaj organskih kompleksanata na separaciju jona Sr iz vodenih rastvora odabranim zeolitima. in 31. симпозијум ДЗЗСЦГ : зборник радова. 2021;:255-261.
https://hdl.handle.net/21.15107/rcub_vinar_10119 .

Smičiklas, Ivana D., Stamatović, Maria-Alexandra, Jović, Mihajlo D., Coha, Ivana, Mraković, Ana Đ., Šljivić-Ivanović, Marija Z., "Uticaj organskih kompleksanata na separaciju jona Sr iz vodenih rastvora odabranim zeolitima" in 31. симпозијум ДЗЗСЦГ : зборник радова (2021):255-261,
https://hdl.handle.net/21.15107/rcub_vinar_10119 .

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

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

Mravik, Ž., Bajuk-Bogdanović, D. V., Mraković, A. Đ., Vukosavljević, L., Trajić, I., Kovač, J., Peruško, D., Gavrilov, N.,& Jovanović, Z. M.. (2021). Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid. in Radiation Physics and Chemistry, 183, 109422.
https://doi.org/10.1016/j.radphyschem.2021.109422

Mravik Ž, Bajuk-Bogdanović DV, Mraković AĐ, Vukosavljević L, Trajić I, Kovač J, Peruško D, Gavrilov N, Jovanović ZM. Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid. in Radiation Physics and Chemistry. 2021;183:109422.
doi:10.1016/j.radphyschem.2021.109422 .

Mravik, Željko, Bajuk-Bogdanović, Danica V., Mraković, Ana Đ., Vukosavljević, Ljubiša, Trajić, Ivan, Kovač, Janez, Peruško, Davor, Gavrilov, Nemanja, Jovanović, Zoran M., "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid" in Radiation Physics and Chemistry, 183 (2021):109422,
https://doi.org/10.1016/j.radphyschem.2021.109422 . .

TY  - JOUR
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Vujković, Milica
AU  - Kuzmanović, Maja D.
AU  - Mraković, Ana Đ.
AU  - Mitrić, Miodrag
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9799
AB  - The polyanion cathodes for Li-ion batteries, namely LiFePO4, Li2FeP2O7 and Li2FeSiO4, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.
T2  - Bulletin of Materials Science
T1  - Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix
VL  - 44
IS  - 2
SP  - 144
DO  - 10.1007/s12034-021-02397-3
ER  - 

@article{
author = "Milović, Miloš and Jugović, Dragana and Vujković, Milica and Kuzmanović, Maja D. and Mraković, Ana Đ. and Mitrić, Miodrag",
year = "2021",
abstract = "The polyanion cathodes for Li-ion batteries, namely LiFePO4, Li2FeP2O7 and Li2FeSiO4, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.",
journal = "Bulletin of Materials Science",
title = "Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix",
volume = "44",
number = "2",
pages = "144",
doi = "10.1007/s12034-021-02397-3"
}

Milović, M., Jugović, D., Vujković, M., Kuzmanović, M. D., Mraković, A. Đ.,& Mitrić, M.. (2021). Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix. in Bulletin of Materials Science, 44(2), 144.
https://doi.org/10.1007/s12034-021-02397-3

Milović M, Jugović D, Vujković M, Kuzmanović MD, Mraković AĐ, Mitrić M. Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix. in Bulletin of Materials Science. 2021;44(2):144.
doi:10.1007/s12034-021-02397-3 .

Milović, Miloš, Jugović, Dragana, Vujković, Milica, Kuzmanović, Maja D., Mraković, Ana Đ., Mitrić, Miodrag, "Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix" in Bulletin of Materials Science, 44, no. 2 (2021):144,
https://doi.org/10.1007/s12034-021-02397-3 . .

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

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

Janković, B. Ž., Smičiklas, I. D., Manić, N. G., Mraković, A. Đ., Mandić, M., Veljović, Đ. N.,& Jović, M. D.. (2020). Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. in Thermochimica Acta, 686, 178568.
https://doi.org/10.1016/j.tca.2020.178568

Janković BŽ, Smičiklas ID, Manić NG, Mraković AĐ, Mandić M, Veljović ĐN, Jović MD. Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. in Thermochimica Acta. 2020;686:178568.
doi:10.1016/j.tca.2020.178568 .

Janković, Bojan Ž., Smičiklas, Ivana D., Manić, Nebojša G., Mraković, Ana Đ., Mandić, Milica, Veljović, Đorđe N., Jović, Mihajlo D., "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors" in Thermochimica Acta, 686 (2020):178568,
https://doi.org/10.1016/j.tca.2020.178568 . .

TY  - CONF
AU  - Smičiklas, Ivana D.
AU  - Egerić, Marija
AU  - Jović, Mihajlo D.
AU  - Šljivić-Ivanović, Marija Z.
AU  - Mraković, Ana Đ.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10929
AB  - The efficiency of thermally modified marine seashells in the separation of Zn and Sr cations was investigated, as a way to valorize and utilize carbonate-rich seafood industry waste. Crushed seashells were heated at different temperatures (300 - 900 °C) and exposed to 0.01 mol/L metal solutions. The percentage of Zn removal increased up to 99.7 % with the increase in temperature, whereas Sr removal gained a maximum of 42.2 % after contact with the specimen heated at 500 °C. Removal efficiency was analyzed in line with the temperature induced transformations of seashells mineral matrix, solution pH values, and Ca concentrations. As revealed by X-ray diffraction analysis, optimal removal of Sr and Zn achieved using pure calcite and pure calcium oxide samples, respectively, was principally a result of the precipitation mechanism.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - Proceedings / XIII International Mineral Processing and Recycling Conference, IMPRC; May 8-10, 2019; Belgrade, Serbia
T1  - Zinc and strontium removal efficiency by thermally modified seashell waste
SP  - 561
EP  - 567
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10929
ER  - 

@conference{
author = "Smičiklas, Ivana D. and Egerić, Marija and Jović, Mihajlo D. and Šljivić-Ivanović, Marija Z. and Mraković, Ana Đ.",
year = "2019",
abstract = "The efficiency of thermally modified marine seashells in the separation of Zn and Sr cations was investigated, as a way to valorize and utilize carbonate-rich seafood industry waste. Crushed seashells were heated at different temperatures (300 - 900 °C) and exposed to 0.01 mol/L metal solutions. The percentage of Zn removal increased up to 99.7 % with the increase in temperature, whereas Sr removal gained a maximum of 42.2 % after contact with the specimen heated at 500 °C. Removal efficiency was analyzed in line with the temperature induced transformations of seashells mineral matrix, solution pH values, and Ca concentrations. As revealed by X-ray diffraction analysis, optimal removal of Sr and Zn achieved using pure calcite and pure calcium oxide samples, respectively, was principally a result of the precipitation mechanism.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "Proceedings / XIII International Mineral Processing and Recycling Conference, IMPRC; May 8-10, 2019; Belgrade, Serbia",
title = "Zinc and strontium removal efficiency by thermally modified seashell waste",
pages = "561-567",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10929"
}

Smičiklas, I. D., Egerić, M., Jović, M. D., Šljivić-Ivanović, M. Z.,& Mraković, A. Đ.. (2019). Zinc and strontium removal efficiency by thermally modified seashell waste. in Proceedings / XIII International Mineral Processing and Recycling Conference, IMPRC; May 8-10, 2019; Belgrade, Serbia
Bor : University of Belgrade, Technical Faculty in Bor., 561-567.
https://hdl.handle.net/21.15107/rcub_vinar_10929

Smičiklas ID, Egerić M, Jović MD, Šljivić-Ivanović MZ, Mraković AĐ. Zinc and strontium removal efficiency by thermally modified seashell waste. in Proceedings / XIII International Mineral Processing and Recycling Conference, IMPRC; May 8-10, 2019; Belgrade, Serbia. 2019;:561-567.
https://hdl.handle.net/21.15107/rcub_vinar_10929 .

Smičiklas, Ivana D., Egerić, Marija, Jović, Mihajlo D., Šljivić-Ivanović, Marija Z., Mraković, Ana Đ., "Zinc and strontium removal efficiency by thermally modified seashell waste" in Proceedings / XIII International Mineral Processing and Recycling Conference, IMPRC; May 8-10, 2019; Belgrade, Serbia (2019):561-567,
https://hdl.handle.net/21.15107/rcub_vinar_10929 .

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

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

Milovanović, S., Marković, D., Mraković, A. Đ., Kuska, R., Žižović, I. T., Frerich, S.,& Ivanović, J.. (2019). Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release. in Materials Science and Engineering: C, 99, 394-404.
https://doi.org/10.1016/j.msec.2019.01.106

Milovanović S, Marković D, Mraković AĐ, Kuska R, Žižović IT, Frerich S, Ivanović J. Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release. in Materials Science and Engineering: C. 2019;99:394-404.
doi:10.1016/j.msec.2019.01.106 .

Milovanović, Stoja, Marković, Darka, Mraković, Ana Đ., Kuska, Robert, Žižović, Irena T., Frerich, Sulamith, Ivanović, Jasna, "Supercritical CO2 - assisted production of PLA and PLGA foams for controlled thymol release" in Materials Science and Engineering: C, 99 (2019):394-404,
https://doi.org/10.1016/j.msec.2019.01.106 . .

TY  - JOUR
AU  - Rogić Miladinović, Zorana
AU  - Mićić, Maja M.
AU  - Mraković, Ana Đ.
AU  - Suljovrujić, Edin H.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1884
AB  - New hydrogels based on different oligo(alkylene glycol) methacrylate (OAGMA) with inverse thermoresponse and volume phase transition temperature (VPTT) were obtained and characterised in this paper. Synthesis was performed from monomer-solvent (OAGMA-water/ethanol) mixture by simultaneous radiation-induced polymerisation and crosslinking; three different OAGMA (EG(6)MA, EG(6)PG(3)MA, and PG(5)MA) were used. The main focus was made on PEG(6)PG(3)MA hydrogel based on ethylene glycol (EG) propylene glycol (PG) pendant chains with EG (6) and PG (3) block units, since in the case of POPGMA and POEGMA homopolymers (i.e. hydrogels with pure PG and EG pendant chains) the VPTTs were observed far below and far above the human body temperature, respectively. Characterisation of the hydrogels was performed by swelling, UV-Vis, FTIR, SEM, DSC and in vitro biocompatibility (cytocompatibility and haemolytic activity) investigations. Due to the possibility to combine VPTT close to human body temperature with good biocompatibility, new hydrogel based on EGPG block pendant chains showed promising potential for different biomedical applications.
T2  - Journal of Polymer Research
T1  - Smart hydrogels with ethylene glycol propylene glycol pendant chains
VL  - 25
IS  - 1
DO  - 10.1007/s10965-017-1408-z
ER  - 

@article{
author = "Rogić Miladinović, Zorana and Mićić, Maja M. and Mraković, Ana Đ. and Suljovrujić, Edin H.",
year = "2018",
abstract = "New hydrogels based on different oligo(alkylene glycol) methacrylate (OAGMA) with inverse thermoresponse and volume phase transition temperature (VPTT) were obtained and characterised in this paper. Synthesis was performed from monomer-solvent (OAGMA-water/ethanol) mixture by simultaneous radiation-induced polymerisation and crosslinking; three different OAGMA (EG(6)MA, EG(6)PG(3)MA, and PG(5)MA) were used. The main focus was made on PEG(6)PG(3)MA hydrogel based on ethylene glycol (EG) propylene glycol (PG) pendant chains with EG (6) and PG (3) block units, since in the case of POPGMA and POEGMA homopolymers (i.e. hydrogels with pure PG and EG pendant chains) the VPTTs were observed far below and far above the human body temperature, respectively. Characterisation of the hydrogels was performed by swelling, UV-Vis, FTIR, SEM, DSC and in vitro biocompatibility (cytocompatibility and haemolytic activity) investigations. Due to the possibility to combine VPTT close to human body temperature with good biocompatibility, new hydrogel based on EGPG block pendant chains showed promising potential for different biomedical applications.",
journal = "Journal of Polymer Research",
title = "Smart hydrogels with ethylene glycol propylene glycol pendant chains",
volume = "25",
number = "1",
doi = "10.1007/s10965-017-1408-z"
}

Rogić Miladinović, Z., Mićić, M. M., Mraković, A. Đ.,& Suljovrujić, E. H.. (2018). Smart hydrogels with ethylene glycol propylene glycol pendant chains. in Journal of Polymer Research, 25(1).
https://doi.org/10.1007/s10965-017-1408-z

Rogić Miladinović Z, Mićić MM, Mraković AĐ, Suljovrujić EH. Smart hydrogels with ethylene glycol propylene glycol pendant chains. in Journal of Polymer Research. 2018;25(1).
doi:10.1007/s10965-017-1408-z .

Rogić Miladinović, Zorana, Mićić, Maja M., Mraković, Ana Đ., Suljovrujić, Edin H., "Smart hydrogels with ethylene glycol propylene glycol pendant chains" in Journal of Polymer Research, 25, no. 1 (2018),
https://doi.org/10.1007/s10965-017-1408-z . .

TY  - JOUR
AU  - Egerić, Marija
AU  - Smičiklas, Ivana D.
AU  - Mraković, Ana Đ.
AU  - Jović, Mihajlo D.
AU  - Šljivić-Ivanović, Marija Z.
AU  - Antanasijević, Davor Z.
AU  - Ristić, Mirjana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7657
AB  - BACKGROUNDSeashell waste (SW) is rich in biogenic calcium carbonate and potentially can substitute geological sources in various applications, such as the separation of heavy metals and radionuclides from contaminated solutions. This study aims to compare SW sorption efficiency towards different chemical species (Cu2+, Zn2+, Pb2+ and Sr2+) and to evaluate the effects of various factors based on the experimental data and modeling approach. RESULTSThe reaction of SW with aqueous metal solutions is a combination of several processes that result in metal retention, Ca2+ release, and changes in pH. SW demonstrates variable selectivity for investigated cations, depending on their concentrations and reaction times. Maximum sorption capacities declined in the order Zn2+ > Pb2+ approximate to Sr2+ > Cu2+. The model based on general regression neural network (GRNN) architecture was developed, which enabled prediction of removal efficiency taking into account the process specific, metal specific parameters and their non-linear interactions. Initial concentration and covalent radius of a cation exhibit the highest, while the initial pH the lowest significance. CONCLUSIONEcological problems caused by SW accumulation in coastal areas could be mitigated by mastering technologies for their practical utilization. The results obtained facilitate the understanding of cationic pollutants removal by SW in the range of experimental conditions, while the GRNN approach demonstrates advantages in modeling complex sorption processes. (c) 2017 Society of Chemical Industry
T2  - Journal of Chemical Technology & Biotechnology
T1  - Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste
VL  - 93
IS  - 5
SP  - 1477
EP  - 1487
DO  - 10.1002/jctb.5516
ER  - 

@article{
author = "Egerić, Marija and Smičiklas, Ivana D. and Mraković, Ana Đ. and Jović, Mihajlo D. and Šljivić-Ivanović, Marija Z. and Antanasijević, Davor Z. and Ristić, Mirjana",
year = "2018",
abstract = "BACKGROUNDSeashell waste (SW) is rich in biogenic calcium carbonate and potentially can substitute geological sources in various applications, such as the separation of heavy metals and radionuclides from contaminated solutions. This study aims to compare SW sorption efficiency towards different chemical species (Cu2+, Zn2+, Pb2+ and Sr2+) and to evaluate the effects of various factors based on the experimental data and modeling approach. RESULTSThe reaction of SW with aqueous metal solutions is a combination of several processes that result in metal retention, Ca2+ release, and changes in pH. SW demonstrates variable selectivity for investigated cations, depending on their concentrations and reaction times. Maximum sorption capacities declined in the order Zn2+ > Pb2+ approximate to Sr2+ > Cu2+. The model based on general regression neural network (GRNN) architecture was developed, which enabled prediction of removal efficiency taking into account the process specific, metal specific parameters and their non-linear interactions. Initial concentration and covalent radius of a cation exhibit the highest, while the initial pH the lowest significance. CONCLUSIONEcological problems caused by SW accumulation in coastal areas could be mitigated by mastering technologies for their practical utilization. The results obtained facilitate the understanding of cationic pollutants removal by SW in the range of experimental conditions, while the GRNN approach demonstrates advantages in modeling complex sorption processes. (c) 2017 Society of Chemical Industry",
journal = "Journal of Chemical Technology & Biotechnology",
title = "Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste",
volume = "93",
number = "5",
pages = "1477-1487",
doi = "10.1002/jctb.5516"
}

Egerić, M., Smičiklas, I. D., Mraković, A. Đ., Jović, M. D., Šljivić-Ivanović, M. Z., Antanasijević, D. Z.,& Ristić, M.. (2018). Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste. in Journal of Chemical Technology & Biotechnology, 93(5), 1477-1487.
https://doi.org/10.1002/jctb.5516

Egerić M, Smičiklas ID, Mraković AĐ, Jović MD, Šljivić-Ivanović MZ, Antanasijević DZ, Ristić M. Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste. in Journal of Chemical Technology & Biotechnology. 2018;93(5):1477-1487.
doi:10.1002/jctb.5516 .

Egerić, Marija, Smičiklas, Ivana D., Mraković, Ana Đ., Jović, Mihajlo D., Šljivić-Ivanović, Marija Z., Antanasijević, Davor Z., Ristić, Mirjana, "Experimental and theoretical consideration of the factors influencing cationic pollutants retention by seashell waste" in Journal of Chemical Technology & Biotechnology, 93, no. 5 (2018):1477-1487,
https://doi.org/10.1002/jctb.5516 . .

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

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

Egerić, M., Smičiklas, I. D., Mraković, A. Đ., Jović, M. D., Šljivić-Ivanović, M. Z., Sokolović, J.,& Ristić, M.. (2018). Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste. in Desalination and Water Treatment, 132, 205-214.
https://doi.org/10.5004/dwt.2018.23131

Egerić M, Smičiklas ID, Mraković AĐ, Jović MD, Šljivić-Ivanović MZ, Sokolović J, Ristić M. Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste. in Desalination and Water Treatment. 2018;132:205-214.
doi:10.5004/dwt.2018.23131 .

Egerić, Marija, Smičiklas, Ivana D., Mraković, Ana Đ., Jović, Mihajlo D., Šljivić-Ivanović, Marija Z., Sokolović, Jovica, Ristić, Mirjana, "Separation of Cu(II) ions from synthetic solutions and waste water by raw and calcined seashell waste" in Desalination and Water Treatment, 132 (2018):205-214,
https://doi.org/10.5004/dwt.2018.23131 . .

TY  - JOUR
AU  - Šljivić-Ivanović, Marija Z.
AU  - Jelić, Ivana V.
AU  - Dimović, Slavko
AU  - Antonijević, Dragi Lj.
AU  - Jović, Mihajlo D.
AU  - Mraković, Ana Đ.
AU  - Smičiklas, Ivana D.
PY  - 2018
UR  - http://link.springer.com/10.1007/s10098-018-1563-x
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7818
AB  - In this study, the applicability of waste concrete as a sorbent material for the liquid radioactive waste management was considered. The sample was properly characterized in terms of mineralogical and surface composition, particles morphology, radioactivity, and of the behavior in aqueous solutions at different solid/liquid ratios and pH values. Since radioactive isotopes of Sr, Co and Ni are significant components of the liquid radioactive waste, sequestering of their ions from aqueous media was studied in single and multi-component batch sorption systems. The capacity of waste concrete decreased in the order Ni2+(0.54 mmol/g) > Co2+(0.32 mmol/g) > Sr2+(0.25 mmol/g). Concurrent sorption was analyzed using Simplex Centroid Experimental Design and the coefficients that correspond to the linear and interaction terms were obtained using a special cubic model. The presented results demonstrate the potential of waste concrete in the radioactive waste treatment and conditioning, due to its high sorption capacity and compatibility with the solidification matrices.
T2  - Clean Technologies and Environmental Policy
T1  - Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste
VL  - 20
IS  - 6
SP  - 1343
EP  - 1354
DO  - 10.1007/s10098-018-1563-x
ER  - 

@article{
author = "Šljivić-Ivanović, Marija Z. and Jelić, Ivana V. and Dimović, Slavko and Antonijević, Dragi Lj. and Jović, Mihajlo D. and Mraković, Ana Đ. and Smičiklas, Ivana D.",
year = "2018",
abstract = "In this study, the applicability of waste concrete as a sorbent material for the liquid radioactive waste management was considered. The sample was properly characterized in terms of mineralogical and surface composition, particles morphology, radioactivity, and of the behavior in aqueous solutions at different solid/liquid ratios and pH values. Since radioactive isotopes of Sr, Co and Ni are significant components of the liquid radioactive waste, sequestering of their ions from aqueous media was studied in single and multi-component batch sorption systems. The capacity of waste concrete decreased in the order Ni2+(0.54 mmol/g) > Co2+(0.32 mmol/g) > Sr2+(0.25 mmol/g). Concurrent sorption was analyzed using Simplex Centroid Experimental Design and the coefficients that correspond to the linear and interaction terms were obtained using a special cubic model. The presented results demonstrate the potential of waste concrete in the radioactive waste treatment and conditioning, due to its high sorption capacity and compatibility with the solidification matrices.",
journal = "Clean Technologies and Environmental Policy",
title = "Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste",
volume = "20",
number = "6",
pages = "1343-1354",
doi = "10.1007/s10098-018-1563-x"
}

Šljivić-Ivanović, M. Z., Jelić, I. V., Dimović, S., Antonijević, D. Lj., Jović, M. D., Mraković, A. Đ.,& Smičiklas, I. D.. (2018). Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste. in Clean Technologies and Environmental Policy, 20(6), 1343-1354.
https://doi.org/10.1007/s10098-018-1563-x

Šljivić-Ivanović MZ, Jelić IV, Dimović S, Antonijević DL, Jović MD, Mraković AĐ, Smičiklas ID. Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste. in Clean Technologies and Environmental Policy. 2018;20(6):1343-1354.
doi:10.1007/s10098-018-1563-x .

Šljivić-Ivanović, Marija Z., Jelić, Ivana V., Dimović, Slavko, Antonijević, Dragi Lj., Jović, Mihajlo D., Mraković, Ana Đ., Smičiklas, Ivana D., "Exploring innovative solutions for aged concrete utilization: treatment of liquid radioactive waste" in Clean Technologies and Environmental Policy, 20, no. 6 (2018):1343-1354,
https://doi.org/10.1007/s10098-018-1563-x . .

TY  - CONF
AU  - Nikolić, Violeta N.
AU  - Tadić, Marin
AU  - Mraković, Ana Đ.
AU  - Spasojević, Vojislav
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7850
AB  - Nano iron oxides have been intensively investigated due to their various potential biomedical applications. ε-Fe2O3 phase exerted internal coercivity value up to ~20 kOe, high Curie temperature (Tc= 510 K), and magnetoelectric character. Accordingly, epsilon phase is recognized as a suitable material for medical spintronic biosensors production, that present important part for the lab-on-a-chip systems. Noteworthy, ε-Fe2O3 phase exerts peculiar magnetic behavior. To get better insight into the magnetism of this material, ε-Fe2O3/SiO2 sample was prepared by the combination of the sol-gel synthesis and microemulsion method (Tann=1050 °C, tann= 4h). Afterwards, the sample was exposed to post-annealing treatment at 100 °C and 200 °C. Synthesized material was preliminary examined by XRD and SQUID techniques. Coercivity changes, induced by the post-annealing temperature oscillations, were monitored by hysteretic measurements. Sample annealed at 1050 °C for 4h, showed coercivity ~20 kOe. The same sample performed to the post-annealing treatment at 100 °C, exerted significantly decreased coercivity (~1600 Oe). Further rise of the post-annealing temperature (200 °C) resulted in the increased coercivity ~15 kOe. Obtained study showed that there is insufficient knowledge concerning the ε-Fe2O3 coercivity changes of the polymorph. The more detailed investigation will be conducted, in order to advance the control of the epsilon phase magnetic properties. © 2018 TANGER Ltd. All Rights Reserved.
C3  - NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application
T1  - Unusual temperature dependence of coercivity in ε-Fe2O3 phase
VL  - 2017-October
SP  - 27
EP  - 32
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7850
ER  - 

@conference{
author = "Nikolić, Violeta N. and Tadić, Marin and Mraković, Ana Đ. and Spasojević, Vojislav",
year = "2018",
abstract = "Nano iron oxides have been intensively investigated due to their various potential biomedical applications. ε-Fe2O3 phase exerted internal coercivity value up to ~20 kOe, high Curie temperature (Tc= 510 K), and magnetoelectric character. Accordingly, epsilon phase is recognized as a suitable material for medical spintronic biosensors production, that present important part for the lab-on-a-chip systems. Noteworthy, ε-Fe2O3 phase exerts peculiar magnetic behavior. To get better insight into the magnetism of this material, ε-Fe2O3/SiO2 sample was prepared by the combination of the sol-gel synthesis and microemulsion method (Tann=1050 °C, tann= 4h). Afterwards, the sample was exposed to post-annealing treatment at 100 °C and 200 °C. Synthesized material was preliminary examined by XRD and SQUID techniques. Coercivity changes, induced by the post-annealing temperature oscillations, were monitored by hysteretic measurements. Sample annealed at 1050 °C for 4h, showed coercivity ~20 kOe. The same sample performed to the post-annealing treatment at 100 °C, exerted significantly decreased coercivity (~1600 Oe). Further rise of the post-annealing temperature (200 °C) resulted in the increased coercivity ~15 kOe. Obtained study showed that there is insufficient knowledge concerning the ε-Fe2O3 coercivity changes of the polymorph. The more detailed investigation will be conducted, in order to advance the control of the epsilon phase magnetic properties. © 2018 TANGER Ltd. All Rights Reserved.",
journal = "NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application",
title = "Unusual temperature dependence of coercivity in ε-Fe2O3 phase",
volume = "2017-October",
pages = "27-32",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7850"
}

Nikolić, V. N., Tadić, M., Mraković, A. Đ.,& Spasojević, V.. (2018). Unusual temperature dependence of coercivity in ε-Fe2O3 phase. in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October, 27-32.
https://hdl.handle.net/21.15107/rcub_vinar_7850

Nikolić VN, Tadić M, Mraković AĐ, Spasojević V. Unusual temperature dependence of coercivity in ε-Fe2O3 phase. in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application. 2018;2017-October:27-32.
https://hdl.handle.net/21.15107/rcub_vinar_7850 .

Nikolić, Violeta N., Tadić, Marin, Mraković, Ana Đ., Spasojević, Vojislav, "Unusual temperature dependence of coercivity in ε-Fe2O3 phase" in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October (2018):27-32,
https://hdl.handle.net/21.15107/rcub_vinar_7850 .

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

@conference{
author = "Omelyanchik, Alexander and Knežević, Nikola and Rodionova, Valeria and Salvador, Maria and Peddis, Davide and Varvaro, Gaspare and Laureti, Sara and Mraković, Ana Đ. and Kusigerski, Vladan and Illes, Erzsebet",
year = "2018",
abstract = "Investigating magnetic properties of nanoparticles dispersed in a fluid is catching an increasing attention for their wide range of applications; however, a careful magnetic characterization requires low temperatures and vacuum conditions which represent a critical issue for a correct sample handling. In this paper, several experimental protocols to investigate low temperature magnetic properties of magnetic nanoparticles dispersed in fluid are described. In particular, by investigating interparticle interaction by remanence techniques at low temperature, some insight about particle aggregation in fluids has been given. © 2018 IEEE.",
publisher = "IEEE",
journal = "2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)",
title = "Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids",
pages = "1-5",
doi = "10.1109/NAP.2018.8915059"
}

Omelyanchik, A., Knežević, N., Rodionova, V., Salvador, M., Peddis, D., Varvaro, G., Laureti, S., Mraković, A. Đ., Kusigerski, V.,& Illes, E.. (2018). Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids. in 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)
IEEE., 1-5.
https://doi.org/10.1109/NAP.2018.8915059

Omelyanchik A, Knežević N, Rodionova V, Salvador M, Peddis D, Varvaro G, Laureti S, Mraković AĐ, Kusigerski V, Illes E. Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids. in 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP). 2018;:1-5.
doi:10.1109/NAP.2018.8915059 .

Omelyanchik, Alexander, Knežević, Nikola, Rodionova, Valeria, Salvador, Maria, Peddis, Davide, Varvaro, Gaspare, Laureti, Sara, Mraković, Ana Đ., Kusigerski, Vladan, Illes, Erzsebet, "Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids" in 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP) (2018):1-5,
https://doi.org/10.1109/NAP.2018.8915059 . .

TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Čolović, Božana M.
AU  - Trajkovska Petkoska, Anka
AU  - Mraković, Ana Đ.
AU  - Jokanović, Bojan
AU  - Nenadović, Miloš
AU  - Ferrara, Manuela
AU  - Nasov, Ilija
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1871
AB  - Structural and optical properties of nanometric titanium oxide (TixOy) films obtained by cathodic arc plasma deposition were investigated. Phase analysis by x-ray diffraction and Fourier-transform infrared spectroscopy showed the presence of anatase, rutile, Ti2O3, Ti4O7 and amorphous phases. Scanning electron microscopy images showed well-developed surface morphology with nano-patterns. Spectroscopic ellipsometry revealed film thicknesses of 53 and 50 nm, variable refractive indices dependent on the light wavelength and close to zero extinction coefficients for wavelengths higher than 500 nm. On the basis of ultraviolet-visible spectroscopy data and using the Tauc equation, band gap values for direct and indirect electron transitions were determined.
T2  - Plasma Science and Technology
T1  - Optical properties of titanium oxide films obtained by cathodic arc plasma deposition
VL  - 19
IS  - 12
DO  - 10.1088/2058-6272/aa8806
ER  - 

@article{
author = "Jokanović, Vukoman R. and Čolović, Božana M. and Trajkovska Petkoska, Anka and Mraković, Ana Đ. and Jokanović, Bojan and Nenadović, Miloš and Ferrara, Manuela and Nasov, Ilija",
year = "2017",
abstract = "Structural and optical properties of nanometric titanium oxide (TixOy) films obtained by cathodic arc plasma deposition were investigated. Phase analysis by x-ray diffraction and Fourier-transform infrared spectroscopy showed the presence of anatase, rutile, Ti2O3, Ti4O7 and amorphous phases. Scanning electron microscopy images showed well-developed surface morphology with nano-patterns. Spectroscopic ellipsometry revealed film thicknesses of 53 and 50 nm, variable refractive indices dependent on the light wavelength and close to zero extinction coefficients for wavelengths higher than 500 nm. On the basis of ultraviolet-visible spectroscopy data and using the Tauc equation, band gap values for direct and indirect electron transitions were determined.",
journal = "Plasma Science and Technology",
title = "Optical properties of titanium oxide films obtained by cathodic arc plasma deposition",
volume = "19",
number = "12",
doi = "10.1088/2058-6272/aa8806"
}

Jokanović, V. R., Čolović, B. M., Trajkovska Petkoska, A., Mraković, A. Đ., Jokanović, B., Nenadović, M., Ferrara, M.,& Nasov, I.. (2017). Optical properties of titanium oxide films obtained by cathodic arc plasma deposition. in Plasma Science and Technology, 19(12).
https://doi.org/10.1088/2058-6272/aa8806

Jokanović VR, Čolović BM, Trajkovska Petkoska A, Mraković AĐ, Jokanović B, Nenadović M, Ferrara M, Nasov I. Optical properties of titanium oxide films obtained by cathodic arc plasma deposition. in Plasma Science and Technology. 2017;19(12).
doi:10.1088/2058-6272/aa8806 .

Jokanović, Vukoman R., Čolović, Božana M., Trajkovska Petkoska, Anka, Mraković, Ana Đ., Jokanović, Bojan, Nenadović, Miloš, Ferrara, Manuela, Nasov, Ilija, "Optical properties of titanium oxide films obtained by cathodic arc plasma deposition" in Plasma Science and Technology, 19, no. 12 (2017),
https://doi.org/10.1088/2058-6272/aa8806 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Spasojević, Vojislav
AU  - Panjan, Matjaž
AU  - Kopanja, Lazar
AU  - Mraković, Ana Đ.
AU  - Tadić, Marin
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1559
AB  - Several Fe2O3/SiO2 nanostructures were synthesized by the combination of the microemulsion and a sol-gel methods. Based on X-ray powder diffraction (XRD) and magnetic measurements (giant coercivity similar to 2.13 T) we identified epsilon-Fe2O3 (hard magnet) as the dominant crystalline phase. TEM analysis showed a wide size distribution of iron oxide nanoparticles (from 4 to 50 nm) with various morphologies (spherical, ellipsoidal and rod-like). We quantitatively described (computational analysis, MATLAB code) morphological properties of nanoparticles using the ellipticity of the shapes. The as-synthesized hard magnetic material was subjected to a post-annealing treatment at different temperatures (200, 500, 750, 1000 and 1100 degrees C) in order to investigate stability, formation and transformation of the epsilon-Fe2O3 polymorph. We found decreasing coercivity in the thermally treated samples up to the temperature of 750 degrees C (H-c=1245 Oe), followed by an observation of a surprising jump in coercivity H-c similar to 1.5 T after post-annealing at 1000 degrees C. We conclude that the re-formation of the epsilon-Fe2O3 structure during post-annealing at 1000 degrees C is the origin of the observed phenomena. The phase transformation epsilon-Fe2O3 - GT alpha-Fe2O3 and crystallization of amorphous silica in quartz and cristobalite were observed in the sample treated at 1100 degrees C.
T2  - Ceramics International
T1  - Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties
VL  - 43
IS  - 10
SP  - 7497
EP  - 7507
DO  - 10.1016/j.ceramint.2017.03.030
ER  - 

@article{
author = "Nikolić, Violeta N. and Spasojević, Vojislav and Panjan, Matjaž and Kopanja, Lazar and Mraković, Ana Đ. and Tadić, Marin",
year = "2017",
abstract = "Several Fe2O3/SiO2 nanostructures were synthesized by the combination of the microemulsion and a sol-gel methods. Based on X-ray powder diffraction (XRD) and magnetic measurements (giant coercivity similar to 2.13 T) we identified epsilon-Fe2O3 (hard magnet) as the dominant crystalline phase. TEM analysis showed a wide size distribution of iron oxide nanoparticles (from 4 to 50 nm) with various morphologies (spherical, ellipsoidal and rod-like). We quantitatively described (computational analysis, MATLAB code) morphological properties of nanoparticles using the ellipticity of the shapes. The as-synthesized hard magnetic material was subjected to a post-annealing treatment at different temperatures (200, 500, 750, 1000 and 1100 degrees C) in order to investigate stability, formation and transformation of the epsilon-Fe2O3 polymorph. We found decreasing coercivity in the thermally treated samples up to the temperature of 750 degrees C (H-c=1245 Oe), followed by an observation of a surprising jump in coercivity H-c similar to 1.5 T after post-annealing at 1000 degrees C. We conclude that the re-formation of the epsilon-Fe2O3 structure during post-annealing at 1000 degrees C is the origin of the observed phenomena. The phase transformation epsilon-Fe2O3 - GT alpha-Fe2O3 and crystallization of amorphous silica in quartz and cristobalite were observed in the sample treated at 1100 degrees C.",
journal = "Ceramics International",
title = "Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties",
volume = "43",
number = "10",
pages = "7497-7507",
doi = "10.1016/j.ceramint.2017.03.030"
}

Nikolić, V. N., Spasojević, V., Panjan, M., Kopanja, L., Mraković, A. Đ.,& Tadić, M.. (2017). Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties. in Ceramics International, 43(10), 7497-7507.
https://doi.org/10.1016/j.ceramint.2017.03.030

Nikolić VN, Spasojević V, Panjan M, Kopanja L, Mraković AĐ, Tadić M. Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties. in Ceramics International. 2017;43(10):7497-7507.
doi:10.1016/j.ceramint.2017.03.030 .

Nikolić, Violeta N., Spasojević, Vojislav, Panjan, Matjaž, Kopanja, Lazar, Mraković, Ana Đ., Tadić, Marin, "Re-formation of metastable epsilon-Fe2O3 in post-annealing of Fe2O3/SiO2 nanostructure: Synthesis, computational particle shape analysis in micrographs and magnetic properties" in Ceramics International, 43, no. 10 (2017):7497-7507,
https://doi.org/10.1016/j.ceramint.2017.03.030 . .

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

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

Lukić, M. J., Sezen, M., Veljović, Đ. N.,& Mraković, A. Đ.. (2017). A facile route for hydroxyapatite densification with an increased heating rate. in Materials Letters, 207, 12-15.
https://doi.org/10.1016/j.matlet.2017.07.020

Lukić MJ, Sezen M, Veljović ĐN, Mraković AĐ. A facile route for hydroxyapatite densification with an increased heating rate. in Materials Letters. 2017;207:12-15.
doi:10.1016/j.matlet.2017.07.020 .

Lukić, Miodrag J., Sezen, Meltem, Veljović, Đorđe N., Mraković, Ana Đ., "A facile route for hydroxyapatite densification with an increased heating rate" in Materials Letters, 207 (2017):12-15,
https://doi.org/10.1016/j.matlet.2017.07.020 . .

TY  - JOUR
AU  - Knežević, Nikola
AU  - Jimenez, Chiara Mauriello
AU  - Albino, Martin
AU  - Vukadinović, Aleksandar
AU  - Mraković, Ana Đ.
AU  - Illés, Erzsébet
AU  - Janaćković, Đorđe T.
AU  - Durand, Jean-Olivier
AU  - Sangregorio, Claudio
AU  - Peddis, Davide
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1775
AB  - Initial results en route toward construction of complex magnetic core-shell silica and organosilica nanotheranostics are presented. Magnetite nanoparticles are synthesized by three different methods and embedded within mesoporous silica and organosilica frameworks by different surfactant-templated procedures to produce three types of core-shell nanoparticles. Magnetite nanoparticles (15 nm in diameter) are embedded within mesoporous silica nanoparticles to produce cell-like material with predominantly one magnetite nuclei-resembling core per nanoparticle, with final particle diameter of ca. 150 nm, specific surface area of 573 m(2)/g and hexagonally structured tubular pores (2.6 nm predominant diameter), extended throughout the volume of nanoparticles. Two forms of spherical core-shell nanoparticles composed of magnetite cores embedded within mesoporous organosilica shells are also obtained by employing ethylene and ethane bridged organobisalkoxysilane precursors. The obtained nanomaterials are characterized by high surface area (978 and 820 m(2)/g), tubular pore morphology (2 and 2.8 nm predominant pore diameters), different diameters (386 and 100-200 nm), in case of ethylene- and ethane-composed organosilica shells, respectively. Different degree of agglomeration of magnetite nanoparticles was also observed in the obtained materials, and in the case of utilization of surfactant-pre-stabilized magnetite nanoparticles for the syntheses, their uniform and non-agglomerated distribution within the shells was noted.
T2  - MRS Advances
T1  - Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures
VL  - 2
IS  - 19-20
SP  - 1037
EP  - 1045
DO  - 10.1557/adv.2017.69
ER  - 

@article{
author = "Knežević, Nikola and Jimenez, Chiara Mauriello and Albino, Martin and Vukadinović, Aleksandar and Mraković, Ana Đ. and Illés, Erzsébet and Janaćković, Đorđe T. and Durand, Jean-Olivier and Sangregorio, Claudio and Peddis, Davide",
year = "2017",
abstract = "Initial results en route toward construction of complex magnetic core-shell silica and organosilica nanotheranostics are presented. Magnetite nanoparticles are synthesized by three different methods and embedded within mesoporous silica and organosilica frameworks by different surfactant-templated procedures to produce three types of core-shell nanoparticles. Magnetite nanoparticles (15 nm in diameter) are embedded within mesoporous silica nanoparticles to produce cell-like material with predominantly one magnetite nuclei-resembling core per nanoparticle, with final particle diameter of ca. 150 nm, specific surface area of 573 m(2)/g and hexagonally structured tubular pores (2.6 nm predominant diameter), extended throughout the volume of nanoparticles. Two forms of spherical core-shell nanoparticles composed of magnetite cores embedded within mesoporous organosilica shells are also obtained by employing ethylene and ethane bridged organobisalkoxysilane precursors. The obtained nanomaterials are characterized by high surface area (978 and 820 m(2)/g), tubular pore morphology (2 and 2.8 nm predominant pore diameters), different diameters (386 and 100-200 nm), in case of ethylene- and ethane-composed organosilica shells, respectively. Different degree of agglomeration of magnetite nanoparticles was also observed in the obtained materials, and in the case of utilization of surfactant-pre-stabilized magnetite nanoparticles for the syntheses, their uniform and non-agglomerated distribution within the shells was noted.",
journal = "MRS Advances",
title = "Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures",
volume = "2",
number = "19-20",
pages = "1037-1045",
doi = "10.1557/adv.2017.69"
}

Knežević, N., Jimenez, C. M., Albino, M., Vukadinović, A., Mraković, A. Đ., Illés, E., Janaćković, Đ. T., Durand, J., Sangregorio, C.,& Peddis, D.. (2017). Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures. in MRS Advances, 2(19-20), 1037-1045.
https://doi.org/10.1557/adv.2017.69

Knežević N, Jimenez CM, Albino M, Vukadinović A, Mraković AĐ, Illés E, Janaćković ĐT, Durand J, Sangregorio C, Peddis D. Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures. in MRS Advances. 2017;2(19-20):1037-1045.
doi:10.1557/adv.2017.69 .

Knežević, Nikola, Jimenez, Chiara Mauriello, Albino, Martin, Vukadinović, Aleksandar, Mraković, Ana Đ., Illés, Erzsébet, Janaćković, Đorđe T., Durand, Jean-Olivier, Sangregorio, Claudio, Peddis, Davide, "Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures" in MRS Advances, 2, no. 19-20 (2017):1037-1045,
https://doi.org/10.1557/adv.2017.69 . .

TY  - CONF
AU  - Illés, Erzsébet
AU  - Knežević, Nikola
AU  - Mraković, Ana Đ.
AU  - Antić, Bratislav
AU  - Perović, Marija M.
AU  - Bošković, Marko
AU  - Kusigerski, Vladan
AU  - Vranješ-Đurić, Sanja
AU  - Peddis, Davide
AU  - Spasojević, Vojislav
AU  - Szytula, A.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10828
AB  - We present here some recent research advancements and opportunities within the FP7-ERA Chairs MagBioVin project. The project aims to design various novel magnetic nanoarchitectures (e.g. bimagnetic and polymeric core-shell systems, nanoparticles embedded in mesoporous silica and radiolabeled nanostructures) for application in targeted treatment and diagnostics of cancer. The magnetic core of these nanomaterials allows the selective treatment of tumor tissues (i.e. targeted drug-delivery, localized magnetic hyperthermia) by magnetic field. Attachment of radionuclides (e.g. 90Y, 99mTc, 134I) to the nanoparticles opens the possibilities for imaging and internal radiotherapy. Magnetic nanoparticles (MNPs), i.e. iron oxides and spinel ferrites, were synthesized by different methods and coated by several compounds (e.g. citrate, polymers, silica, BSA) to increase their biocompatibility. The composition and morphology of the nanomaterials is characterized by XRD, TEM imaging and infrared spectroscopy, while their magnetic properties were studied by SQUID magnetometry and Mössbauer spectroscopy. Magnetic hyperthermia effects were monitored by DM100 device equipped with DM1, 2 and 3 applicators (nB nanoScale Biomagnetics). This unique setup allows us to monitor the heating efficiency development in cell cultures and small animals (e.g. mice, rats) as well. The current results showed that the MNPs can be successfully labeled with 90Y and 99mTc. The drug loading and release properties of MNPs are studied by HPLC using doxorubicin as the drug. In vitro and in vivo (animal model) applicability of the synthesized nanomaterials regarding toxicity, biodistribution and anti-cancer efficacy is explored for targeted cancer treatment.
C3  - Clinical Chemistry and Laboratory Medicine
T1  - Design of novel magnetic nanostructures for targeted tumour therapy - MagBioVin Project
VL  - 54
IS  - 10
SP  - eA187
DO  - 10.1515/cclm-2016-0583
ER  - 

@conference{
author = "Illés, Erzsébet and Knežević, Nikola and Mraković, Ana Đ. and Antić, Bratislav and Perović, Marija M. and Bošković, Marko and Kusigerski, Vladan and Vranješ-Đurić, Sanja and Peddis, Davide and Spasojević, Vojislav and Szytula, A.",
year = "2016",
abstract = "We present here some recent research advancements and opportunities within the FP7-ERA Chairs MagBioVin project. The project aims to design various novel magnetic nanoarchitectures (e.g. bimagnetic and polymeric core-shell systems, nanoparticles embedded in mesoporous silica and radiolabeled nanostructures) for application in targeted treatment and diagnostics of cancer. The magnetic core of these nanomaterials allows the selective treatment of tumor tissues (i.e. targeted drug-delivery, localized magnetic hyperthermia) by magnetic field. Attachment of radionuclides (e.g. 90Y, 99mTc, 134I) to the nanoparticles opens the possibilities for imaging and internal radiotherapy. Magnetic nanoparticles (MNPs), i.e. iron oxides and spinel ferrites, were synthesized by different methods and coated by several compounds (e.g. citrate, polymers, silica, BSA) to increase their biocompatibility. The composition and morphology of the nanomaterials is characterized by XRD, TEM imaging and infrared spectroscopy, while their magnetic properties were studied by SQUID magnetometry and Mössbauer spectroscopy. Magnetic hyperthermia effects were monitored by DM100 device equipped with DM1, 2 and 3 applicators (nB nanoScale Biomagnetics). This unique setup allows us to monitor the heating efficiency development in cell cultures and small animals (e.g. mice, rats) as well. The current results showed that the MNPs can be successfully labeled with 90Y and 99mTc. The drug loading and release properties of MNPs are studied by HPLC using doxorubicin as the drug. In vitro and in vivo (animal model) applicability of the synthesized nanomaterials regarding toxicity, biodistribution and anti-cancer efficacy is explored for targeted cancer treatment.",
journal = "Clinical Chemistry and Laboratory Medicine",
title = "Design of novel magnetic nanostructures for targeted tumour therapy - MagBioVin Project",
volume = "54",
number = "10",
pages = "eA187",
doi = "10.1515/cclm-2016-0583"
}

Illés, E., Knežević, N., Mraković, A. Đ., Antić, B., Perović, M. M., Bošković, M., Kusigerski, V., Vranješ-Đurić, S., Peddis, D., Spasojević, V.,& Szytula, A.. (2016). Design of novel magnetic nanostructures for targeted tumour therapy - MagBioVin Project. in Clinical Chemistry and Laboratory Medicine, 54(10), eA187.
https://doi.org/10.1515/cclm-2016-0583

Illés E, Knežević N, Mraković AĐ, Antić B, Perović MM, Bošković M, Kusigerski V, Vranješ-Đurić S, Peddis D, Spasojević V, Szytula A. Design of novel magnetic nanostructures for targeted tumour therapy - MagBioVin Project. in Clinical Chemistry and Laboratory Medicine. 2016;54(10):eA187.
doi:10.1515/cclm-2016-0583 .

Illés, Erzsébet, Knežević, Nikola, Mraković, Ana Đ., Antić, Bratislav, Perović, Marija M., Bošković, Marko, Kusigerski, Vladan, Vranješ-Đurić, Sanja, Peddis, Davide, Spasojević, Vojislav, Szytula, A., "Design of novel magnetic nanostructures for targeted tumour therapy - MagBioVin Project" in Clinical Chemistry and Laboratory Medicine, 54, no. 10 (2016):eA187,
https://doi.org/10.1515/cclm-2016-0583 . .

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

@article{
author = "Momić, Tatjana and Lazarević-Pašti, Tamara and Bogdanović, Una and Vodnik, Vesna and Mraković, Ana Đ. and Rakočević, Zlatko Lj. and Pavlović, Vladimir B. and Vasić, Vesna M.",
year = "2016",
abstract = "Organophosphorus pesticide dimethoate was adsorbed onto gold nanospheres and nanorods in aqueous solution using batch technique. Adsorption of dimethoate onto gold nanoparticles was confirmed by UV-Vis spectrophotometry, TEM, AFM, and FTIR analysis. The adsorption of nanospheres resulted in aggregation which was not the case with nanorods. Nanoparticles adsorption features were characterized using Langmuir and Freundlich isotherm models. The Langmuir adsorption isotherm was found to have the best fit to the experimental data for both types of nanoparticles. Adsorption capacity detected for nanospheres is 456 mg/g and for nanorods is 57.1 mg/g. Also, nanoparticles were successfully used for dimethoate removal from spiked drinking water while nanospheres were shown to be more efficient than nanorods.",
journal = "Journal of Nanomaterials",
title = "Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods",
doi = "10.1155/2016/8910271"
}

Momić, T., Lazarević-Pašti, T., Bogdanović, U., Vodnik, V., Mraković, A. Đ., Rakočević, Z. Lj., Pavlović, V. B.,& Vasić, V. M.. (2016). Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods. in Journal of Nanomaterials.
https://doi.org/10.1155/2016/8910271

Momić T, Lazarević-Pašti T, Bogdanović U, Vodnik V, Mraković AĐ, Rakočević ZL, Pavlović VB, Vasić VM. Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods. in Journal of Nanomaterials. 2016;.
doi:10.1155/2016/8910271 .

Momić, Tatjana, Lazarević-Pašti, Tamara, Bogdanović, Una, Vodnik, Vesna, Mraković, Ana Đ., Rakočević, Zlatko Lj., Pavlović, Vladimir B., Vasić, Vesna M., "Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods" in Journal of Nanomaterials (2016),
https://doi.org/10.1155/2016/8910271 . .