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://ritnms.itnms.ac.rs/handle/123456789/1185
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 UV visible and FTIR spectrometer.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Twenty-First Young Researchers’ Conference - Materials Science and Engineering
T1  - Nanofabrication and characterisation of magnetic Fe3O4 nanostructures  for potential environmental and biomedical applications
EP  - 14
SP  - 14
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 UV visible and FTIR spectrometer.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Twenty-First Young Researchers’ Conference - Materials Science and Engineering",
title = "Nanofabrication and characterisation of magnetic Fe3O4 nanostructures  for potential environmental and biomedical applications",
pages = "14-14"
}

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 Twenty-First Young Researchers’ Conference - Materials Science and Engineering
Belgrade : Institute of Technical Sciences of SASA., 14-14.

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 Twenty-First Young Researchers’ Conference - Materials Science and Engineering. 2023;:14-14..

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 Twenty-First Young Researchers’ Conference - Materials Science and Engineering (2023):14-14.

TY  - CONF
AU  - Milojkov, Dušan
AU  - Sokić, Miroslav
AU  - Mitrović, Angelina
AU  - Smiljanić, Danijela
AU  - Petrović, Jelena
AU  - Simić, Marija
AU  - Živković-Radovanović, Vukosava
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/988
AB  - The accumulation of mine tailings in the mining area of Majdanpek represents a serious environmental problem. A strong impetus for the development of sustainable methods for the recovery of metals from mine tailings is given by the importance of heavy metal recovery and the economic benefits of precious and base metals. Currently, researchers are working to develop metals recovery from tailings through bioleaching, which is a more sustainable method compared to traditional metallurgical methods. Biotechnologies for leaching heavy metals from old flotation tailings (Majdanpek, Serbia) with fungus Aspergillus niger (A. niger) are discussed in this paper. The subject of this research is iron ions, since the tailings are the richest in this metal. With a simple bioleaching process, which is based on the cultivation of A. niger in the basic growth medium and then challenging it with tailings, 5% iron was released in 35 days. The transformation of mine tailings morphology was also confirmed by optical microscopy. Processes by which A. niger extracts metals from
tailings include acidolysis, complexation, alkaloysis and biosorption. Also, in addition to metabolites, these fungi produce spores and mycelium that can destroy material and transform it to the soil. Given that Serbia is abundant with agricultural
waste, as well as waste from the food industry, in future studies cheap waste should be used as an energy input source for A. niger and transformation of tailings.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe
T1  - Development of sustainable method for metal recovery from old flotation tailings (Majdanpek, Serbia) using Aspergillus niger fungus
EP  - 330
SP  - 325
ER  - 

@conference{
author = "Milojkov, Dušan and Sokić, Miroslav and Mitrović, Angelina and Smiljanić, Danijela and Petrović, Jelena and Simić, Marija and Živković-Radovanović, Vukosava",
year = "2023",
abstract = "The accumulation of mine tailings in the mining area of Majdanpek represents a serious environmental problem. A strong impetus for the development of sustainable methods for the recovery of metals from mine tailings is given by the importance of heavy metal recovery and the economic benefits of precious and base metals. Currently, researchers are working to develop metals recovery from tailings through bioleaching, which is a more sustainable method compared to traditional metallurgical methods. Biotechnologies for leaching heavy metals from old flotation tailings (Majdanpek, Serbia) with fungus Aspergillus niger (A. niger) are discussed in this paper. The subject of this research is iron ions, since the tailings are the richest in this metal. With a simple bioleaching process, which is based on the cultivation of A. niger in the basic growth medium and then challenging it with tailings, 5% iron was released in 35 days. The transformation of mine tailings morphology was also confirmed by optical microscopy. Processes by which A. niger extracts metals from
tailings include acidolysis, complexation, alkaloysis and biosorption. Also, in addition to metabolites, these fungi produce spores and mycelium that can destroy material and transform it to the soil. Given that Serbia is abundant with agricultural
waste, as well as waste from the food industry, in future studies cheap waste should be used as an energy input source for A. niger and transformation of tailings.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe",
title = "Development of sustainable method for metal recovery from old flotation tailings (Majdanpek, Serbia) using Aspergillus niger fungus",
pages = "330-325"
}

Milojkov, D., Sokić, M., Mitrović, A., Smiljanić, D., Petrović, J., Simić, M.,& Živković-Radovanović, V.. (2023). Development of sustainable method for metal recovery from old flotation tailings (Majdanpek, Serbia) using Aspergillus niger fungus. in 5th Metallurgical & Materials Engineering Congress of South-East Europe
Belgrade : Association of Metallurgical Engineers of Serbia., 325-330.

Milojkov D, Sokić M, Mitrović A, Smiljanić D, Petrović J, Simić M, Živković-Radovanović V. Development of sustainable method for metal recovery from old flotation tailings (Majdanpek, Serbia) using Aspergillus niger fungus. in 5th Metallurgical & Materials Engineering Congress of South-East Europe. 2023;:325-330..

Milojkov, Dušan, Sokić, Miroslav, Mitrović, Angelina, Smiljanić, Danijela, Petrović, Jelena, Simić, Marija, Živković-Radovanović, Vukosava, "Development of sustainable method for metal recovery from old flotation tailings (Majdanpek, Serbia) using Aspergillus niger fungus" in 5th Metallurgical & Materials Engineering Congress of South-East Europe (2023):325-330.

TY  - JOUR
AU  - Milojkov, Dušan
AU  - Radosavljević-Mihajlović, Ana
AU  - Stanić, Vojislav
AU  - Nastasijević, B.J.
AU  - Radotić, Ksenija
AU  - Janković-Častvan, Ivona
AU  - Živković-Radovanović, Vukosava
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/653
AB  - Nanomaterials based on metal–doped fluorapatite (FAP) have attracted considerable interest as potential next–generation antimicrobial agents. In this study, Cu2+–doped FAP nanocrystals have been successfully synthesized by a neutralization method at room temperature. Their structural, optical, antimicrobial, and hemcompatible properties have been investigated. XRD, FTIR, FESEM, and N2 adsorption–desorption studies indicate the formation of single–phase FAP mesoporous nanopowders, composed of rod–like particles. TEM images confirmed the formation of nanorodes with a length of 60 nm and a width of about 18 nm. Rietveld analysis shows that the Cu2+ ions preferentially substitute Ca2 (6 h) sites in the hexagonal fluorapatite crystal structure. Fluorescence spectroscopy accompanied by MCR–ALS method confirms substitution of Cu2+ ions in FAP crystal lattice with extracting additional d–d band transition at green color from FAP broadband self–activated luminescence in violet–blue color. Antimicrobial studies conducted on Staphylococcus aureus, Escherichia coli and Micrococcus lysodeikticus showed that FAP nanopowder with the highest Cu2+ content have strong bacteriostatic action on Staphylococcus aureus bacterial strain in mediums containing nutrition matters. In addition, this sample in comparison to pure FAP achieved a high percentage of relative reduction of bacterial population for all three species, being >90% in most cases. Fungistatic action is noticed too, throwgh the slowing down mycelium growth of fungus Aspergillus niger, Aspergillus flavus and Penicillium roqueforti and reduction of sporulation of Aspergillus niger species. Cu2+–doped FAP nanocrystals shows a synergistic antimicrobial effect with Cu2+ and F− ions. Concerning the potential biomedical applications, the hemolysis ratios of the Cu2+–doped FAP samples were below 5%. The obtained results pointed out the possible use of the synthesized nanocrystals as broad–spectrum antimicrobial agents for various biomedical and health care preparations.
PB  - Elsevier B.V.
T2  - Journal of Photochemistry and Photobiology B: Biology
T1  - Synthesis and characterization of luminescent Cu2+–doped fluorapatite nanocrystals as potential broad–spectrum antimicrobial agents
VL  - 239
DO  - 10.1016/j.jphotobiol.2023.112649
UR  - conv_984
ER  - 

@article{
author = "Milojkov, Dušan and Radosavljević-Mihajlović, Ana and Stanić, Vojislav and Nastasijević, B.J. and Radotić, Ksenija and Janković-Častvan, Ivona and Živković-Radovanović, Vukosava",
year = "2023",
abstract = "Nanomaterials based on metal–doped fluorapatite (FAP) have attracted considerable interest as potential next–generation antimicrobial agents. In this study, Cu2+–doped FAP nanocrystals have been successfully synthesized by a neutralization method at room temperature. Their structural, optical, antimicrobial, and hemcompatible properties have been investigated. XRD, FTIR, FESEM, and N2 adsorption–desorption studies indicate the formation of single–phase FAP mesoporous nanopowders, composed of rod–like particles. TEM images confirmed the formation of nanorodes with a length of 60 nm and a width of about 18 nm. Rietveld analysis shows that the Cu2+ ions preferentially substitute Ca2 (6 h) sites in the hexagonal fluorapatite crystal structure. Fluorescence spectroscopy accompanied by MCR–ALS method confirms substitution of Cu2+ ions in FAP crystal lattice with extracting additional d–d band transition at green color from FAP broadband self–activated luminescence in violet–blue color. Antimicrobial studies conducted on Staphylococcus aureus, Escherichia coli and Micrococcus lysodeikticus showed that FAP nanopowder with the highest Cu2+ content have strong bacteriostatic action on Staphylococcus aureus bacterial strain in mediums containing nutrition matters. In addition, this sample in comparison to pure FAP achieved a high percentage of relative reduction of bacterial population for all three species, being >90% in most cases. Fungistatic action is noticed too, throwgh the slowing down mycelium growth of fungus Aspergillus niger, Aspergillus flavus and Penicillium roqueforti and reduction of sporulation of Aspergillus niger species. Cu2+–doped FAP nanocrystals shows a synergistic antimicrobial effect with Cu2+ and F− ions. Concerning the potential biomedical applications, the hemolysis ratios of the Cu2+–doped FAP samples were below 5%. The obtained results pointed out the possible use of the synthesized nanocrystals as broad–spectrum antimicrobial agents for various biomedical and health care preparations.",
publisher = "Elsevier B.V.",
journal = "Journal of Photochemistry and Photobiology B: Biology",
title = "Synthesis and characterization of luminescent Cu2+–doped fluorapatite nanocrystals as potential broad–spectrum antimicrobial agents",
volume = "239",
doi = "10.1016/j.jphotobiol.2023.112649",
url = "conv_984"
}

Milojkov, D., Radosavljević-Mihajlović, A., Stanić, V., Nastasijević, B.J., Radotić, K., Janković-Častvan, I.,& Živković-Radovanović, V.. (2023). Synthesis and characterization of luminescent Cu2+–doped fluorapatite nanocrystals as potential broad–spectrum antimicrobial agents. in Journal of Photochemistry and Photobiology B: Biology
Elsevier B.V.., 239.
https://doi.org/10.1016/j.jphotobiol.2023.112649
conv_984

Milojkov D, Radosavljević-Mihajlović A, Stanić V, Nastasijević B, Radotić K, Janković-Častvan I, Živković-Radovanović V. Synthesis and characterization of luminescent Cu2+–doped fluorapatite nanocrystals as potential broad–spectrum antimicrobial agents. in Journal of Photochemistry and Photobiology B: Biology. 2023;239.
doi:10.1016/j.jphotobiol.2023.112649
conv_984 .

Milojkov, Dušan, Radosavljević-Mihajlović, Ana, Stanić, Vojislav, Nastasijević, B.J., Radotić, Ksenija, Janković-Častvan, Ivona, Živković-Radovanović, Vukosava, "Synthesis and characterization of luminescent Cu2+–doped fluorapatite nanocrystals as potential broad–spectrum antimicrobial agents" in Journal of Photochemistry and Photobiology B: Biology, 239 (2023),
https://doi.org/10.1016/j.jphotobiol.2023.112649 .,
conv_984 .

TY  - JOUR
AU  - Milojkov, Dušan
AU  - Sokić, Miroslav
AU  - Živković-Radovanović, Vukosava
AU  - Manojlović, Vaso
AU  - Mutavdzić, Dragosav R.
AU  - Janjić, Goran V.
AU  - Radotić, Ksenija
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/657
AB  - In this study, luminescence and antibacterial behavior of pure fluorapatite (FAp) and praseodymium-nitrate-carbonate co-doped fluorapatite (PrNCFAp) nanopowders were investigated. Uniform nanopowders were synthesized by precipitation reaction followed by centrifugation and systematically characterized by XRD, FTIR, SEM-EDS, TG and PL methods. XRD analysis revealed the formation of hexagonal FAp crystals, and FTIR spectra indicate the presence of nitrate (NO3-) and carbonate (CO32-) species. SEM analyzes confirm agglomerates composed of irregular nanometer-sized spheres. Emission of FAp nanopowder occurred in the violet-blue region of the visible part of the spectrum, with redshift to the blue-green color region when Pr3+, NO(3)(- )and CO32- co-doped in the lattice. Analysis of luminescence spectra by MCR-ALS method extract three fluorophores from the PrNCFAp sample and showed simultaneous existents of emission-reabsorption-emission between dopants in FAp lattice. Antibacterial activity against pathogen Staphylococcus aureus was investigated before and after treatment of nanopowders by UVA radiation of 365 nm. Nanopowders irradiated with UVA compared to non-irradiated reduced Staphylococcus aureus by 84.9% for PrNCFAp and 33.3% for FAp in the first 0.5 h of contact, and 76.1% and 42.9% after 24 h of contact. In addition, the obtained luminescent nanomaterials showed a low degree of hemolytic activity and could potentially be candidates for further research in dentistry.
PB  - Dordrecht : Springer
T2  - Optical and Quantum Electronics
T1  - Cascade luminescence and antibacterial behavior of fluorapatite nanopowder co-doped with Pr3+, NO3- and CO32- ions
IS  - 1
VL  - 55
DO  - 10.1007/s11082-022-04347-7
UR  - conv_959
ER  - 

@article{
author = "Milojkov, Dušan and Sokić, Miroslav and Živković-Radovanović, Vukosava and Manojlović, Vaso and Mutavdzić, Dragosav R. and Janjić, Goran V. and Radotić, Ksenija",
year = "2023",
abstract = "In this study, luminescence and antibacterial behavior of pure fluorapatite (FAp) and praseodymium-nitrate-carbonate co-doped fluorapatite (PrNCFAp) nanopowders were investigated. Uniform nanopowders were synthesized by precipitation reaction followed by centrifugation and systematically characterized by XRD, FTIR, SEM-EDS, TG and PL methods. XRD analysis revealed the formation of hexagonal FAp crystals, and FTIR spectra indicate the presence of nitrate (NO3-) and carbonate (CO32-) species. SEM analyzes confirm agglomerates composed of irregular nanometer-sized spheres. Emission of FAp nanopowder occurred in the violet-blue region of the visible part of the spectrum, with redshift to the blue-green color region when Pr3+, NO(3)(- )and CO32- co-doped in the lattice. Analysis of luminescence spectra by MCR-ALS method extract three fluorophores from the PrNCFAp sample and showed simultaneous existents of emission-reabsorption-emission between dopants in FAp lattice. Antibacterial activity against pathogen Staphylococcus aureus was investigated before and after treatment of nanopowders by UVA radiation of 365 nm. Nanopowders irradiated with UVA compared to non-irradiated reduced Staphylococcus aureus by 84.9% for PrNCFAp and 33.3% for FAp in the first 0.5 h of contact, and 76.1% and 42.9% after 24 h of contact. In addition, the obtained luminescent nanomaterials showed a low degree of hemolytic activity and could potentially be candidates for further research in dentistry.",
publisher = "Dordrecht : Springer",
journal = "Optical and Quantum Electronics",
title = "Cascade luminescence and antibacterial behavior of fluorapatite nanopowder co-doped with Pr3+, NO3- and CO32- ions",
number = "1",
volume = "55",
doi = "10.1007/s11082-022-04347-7",
url = "conv_959"
}

Milojkov, D., Sokić, M., Živković-Radovanović, V., Manojlović, V., Mutavdzić, D. R., Janjić, G. V.,& Radotić, K.. (2023). Cascade luminescence and antibacterial behavior of fluorapatite nanopowder co-doped with Pr3+, NO3- and CO32- ions. in Optical and Quantum Electronics
Dordrecht : Springer., 55(1).
https://doi.org/10.1007/s11082-022-04347-7
conv_959

Milojkov D, Sokić M, Živković-Radovanović V, Manojlović V, Mutavdzić DR, Janjić GV, Radotić K. Cascade luminescence and antibacterial behavior of fluorapatite nanopowder co-doped with Pr3+, NO3- and CO32- ions. in Optical and Quantum Electronics. 2023;55(1).
doi:10.1007/s11082-022-04347-7
conv_959 .

Milojkov, Dušan, Sokić, Miroslav, Živković-Radovanović, Vukosava, Manojlović, Vaso, Mutavdzić, Dragosav R., Janjić, Goran V., Radotić, Ksenija, "Cascade luminescence and antibacterial behavior of fluorapatite nanopowder co-doped with Pr3+, NO3- and CO32- ions" in Optical and Quantum Electronics, 55, no. 1 (2023),
https://doi.org/10.1007/s11082-022-04347-7 .,
conv_959 .

TY  - JOUR
AU  - Milojkov, Dušan
AU  - Stanić, Vojislav
AU  - Dimović, S. D.
AU  - Mutavdzić, Dragosav R.
AU  - Živković-Radovanović, Vukosava
AU  - Janjić, Goran V.
AU  - Radotić, Ksenija
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/509
AB  - In the present study we have analyzed effects of Ag+ ions doping on energetic profiles of nanophosphors materials based on fluorapatite crystal system. The UV radiation absorption and luminescence properties of monophase fluorapatite (FAP) and Ag+ doped fluorapatite (AgFAP) nanomaterials obtained by neutralization method were investigated using the photoluminescence spectrophotometry. The excitation-emission profiles of nanomaterials were analyzed statistically by MCR-ALS method and number of fluorophores was extracted. FAP lattice absorbed light at 350 nm in the UVA part of spectrum, and with increasing concentration of Ag+ ions new absorption maximum appeared at 270 nm in the UVC part. Fluorescence of FAP nanoparticles was in violet region of visible part of the spectrum, with a red shift to the green region when Ag+ was doped in lattice. MCR-ALS analyses of fluorescence spectra confirm formation of two maxima, at 484 and 505 nm, as a consequence of Ag+ ions doping in FAP lattice at Cal (4f) sites. The results of quantum chemical calculations showed that an Ag+ ion is stronger bonded to the binding site 1 (-1352.6 kcal/mol) than to the binding site 2 (-1249.0 kcal/mol). Considering that AgFAP1 nanopowder absorbs photons over all part of UV radiation spectrum, this material might be used as potential radiation protective nanomaterial.
PB  - Polish Acad Sciences Inst Physics, Warsaw
T2  - Acta Physica Polonica A
T1  - Effects of Ag+ Ion Doping on UV Radiation Absorption and Luminescence Profiles of Fluorapatite Nanomaterials Obtained by Neutralization Method
EP  - 91
IS  - 1
SP  - 86
VL  - 136
DO  - 10.12693/APhysPolA.136.86
UR  - conv_863
ER  - 

@article{
author = "Milojkov, Dušan and Stanić, Vojislav and Dimović, S. D. and Mutavdzić, Dragosav R. and Živković-Radovanović, Vukosava and Janjić, Goran V. and Radotić, Ksenija",
year = "2019",
abstract = "In the present study we have analyzed effects of Ag+ ions doping on energetic profiles of nanophosphors materials based on fluorapatite crystal system. The UV radiation absorption and luminescence properties of monophase fluorapatite (FAP) and Ag+ doped fluorapatite (AgFAP) nanomaterials obtained by neutralization method were investigated using the photoluminescence spectrophotometry. The excitation-emission profiles of nanomaterials were analyzed statistically by MCR-ALS method and number of fluorophores was extracted. FAP lattice absorbed light at 350 nm in the UVA part of spectrum, and with increasing concentration of Ag+ ions new absorption maximum appeared at 270 nm in the UVC part. Fluorescence of FAP nanoparticles was in violet region of visible part of the spectrum, with a red shift to the green region when Ag+ was doped in lattice. MCR-ALS analyses of fluorescence spectra confirm formation of two maxima, at 484 and 505 nm, as a consequence of Ag+ ions doping in FAP lattice at Cal (4f) sites. The results of quantum chemical calculations showed that an Ag+ ion is stronger bonded to the binding site 1 (-1352.6 kcal/mol) than to the binding site 2 (-1249.0 kcal/mol). Considering that AgFAP1 nanopowder absorbs photons over all part of UV radiation spectrum, this material might be used as potential radiation protective nanomaterial.",
publisher = "Polish Acad Sciences Inst Physics, Warsaw",
journal = "Acta Physica Polonica A",
title = "Effects of Ag+ Ion Doping on UV Radiation Absorption and Luminescence Profiles of Fluorapatite Nanomaterials Obtained by Neutralization Method",
pages = "91-86",
number = "1",
volume = "136",
doi = "10.12693/APhysPolA.136.86",
url = "conv_863"
}

Milojkov, D., Stanić, V., Dimović, S. D., Mutavdzić, D. R., Živković-Radovanović, V., Janjić, G. V.,& Radotić, K.. (2019). Effects of Ag+ Ion Doping on UV Radiation Absorption and Luminescence Profiles of Fluorapatite Nanomaterials Obtained by Neutralization Method. in Acta Physica Polonica A
Polish Acad Sciences Inst Physics, Warsaw., 136(1), 86-91.
https://doi.org/10.12693/APhysPolA.136.86
conv_863

Milojkov D, Stanić V, Dimović SD, Mutavdzić DR, Živković-Radovanović V, Janjić GV, Radotić K. Effects of Ag+ Ion Doping on UV Radiation Absorption and Luminescence Profiles of Fluorapatite Nanomaterials Obtained by Neutralization Method. in Acta Physica Polonica A. 2019;136(1):86-91.
doi:10.12693/APhysPolA.136.86
conv_863 .

Milojkov, Dušan, Stanić, Vojislav, Dimović, S. D., Mutavdzić, Dragosav R., Živković-Radovanović, Vukosava, Janjić, Goran V., Radotić, Ksenija, "Effects of Ag+ Ion Doping on UV Radiation Absorption and Luminescence Profiles of Fluorapatite Nanomaterials Obtained by Neutralization Method" in Acta Physica Polonica A, 136, no. 1 (2019):86-91,
https://doi.org/10.12693/APhysPolA.136.86 .,
conv_863 .

TY  - CONF
AU  - Stanić, Vojislav
AU  - Kalić, Karolina
AU  - Dimović, Slavko
AU  - Milojkov, Dušan
AU  - Tanasković, Slađana
AU  - Živković-Radovanović, Vukosava
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/971
AB  - The high-density polyethylene/silver-doped fluorapatite composite 
(HDPE/AgFAP) with 1 wt% of AgFAP was produced using a twin screw 
extruder. Characterization studies of XRD and TEM results showed that 
AgFAP particles were drowned and partially dispersed in the polymer. 
Antimicrobial study has demonstrated that composite exhibits antimicrobial 
activity in vitro against the S. aureus.
PB  - Belgrade : Vinča institute of nuclear sciences
C3  - 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Preparation and antimicrobial activity of polyethylene composite with silver-doped fluorapatite
EP  - 139
SP  - 134
ER  - 

@conference{
author = "Stanić, Vojislav and Kalić, Karolina and Dimović, Slavko and Milojkov, Dušan and Tanasković, Slađana and Živković-Radovanović, Vukosava",
year = "2018",
abstract = "The high-density polyethylene/silver-doped fluorapatite composite 
(HDPE/AgFAP) with 1 wt% of AgFAP was produced using a twin screw 
extruder. Characterization studies of XRD and TEM results showed that 
AgFAP particles were drowned and partially dispersed in the polymer. 
Antimicrobial study has demonstrated that composite exhibits antimicrobial 
activity in vitro against the S. aureus.",
publisher = "Belgrade : Vinča institute of nuclear sciences",
journal = "6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Preparation and antimicrobial activity of polyethylene composite with silver-doped fluorapatite",
pages = "139-134"
}

Stanić, V., Kalić, K., Dimović, S., Milojkov, D., Tanasković, S.,& Živković-Radovanović, V.. (2018). Preparation and antimicrobial activity of polyethylene composite with silver-doped fluorapatite. in 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Vinča institute of nuclear sciences., 134-139.

Stanić V, Kalić K, Dimović S, Milojkov D, Tanasković S, Živković-Radovanović V. Preparation and antimicrobial activity of polyethylene composite with silver-doped fluorapatite. in 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2018;:134-139..

Stanić, Vojislav, Kalić, Karolina, Dimović, Slavko, Milojkov, Dušan, Tanasković, Slađana, Živković-Radovanović, Vukosava, "Preparation and antimicrobial activity of polyethylene composite with silver-doped fluorapatite" in 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2018):134-139.

TY  - CONF
AU  - Milojkov, Dušan
AU  - Nastasijević, Branislav
AU  - Živković-Radovanović, Vukosava
AU  - Janjić, Goran
AU  - Dimović, Slavko
AU  - Mutavdžić, Dragosav
AU  - Stanić, Vojislav
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/967
AB  - In this study, the preparation and characterization of luminescent
fluorapatite (FAP) nanoparticles (50 and 80 nm rod-size), and their use for
labeling of Saccharomyces cerevisae cells were investigated. Fluorapatite
nanoparticles were obtained by neutralization method. X-ray diffraction
(XRD), scanning electron microscopy (SEM) and photoluminescence (PL)
methods have confirmed a rod-like material of nanometer size with
broadband emission within 380-600 nm under UVA light excitation.
Fluorescence microscopy showed that fluorapatite nano-fluorophors
successfully labeled S. cerevisiae cells, by attaching the proteins on the cell
wall. Obtained luminescent fluorapatite nanorods could be used as a probe
for visualization and detection of yeast cells.
C3  - 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Synthesis and characterization of luminescent fluorapatite nanorods for labelling of Saccharomyces cerevisiae cells
EP  - 162
SP  - 159
ER  - 

@conference{
author = "Milojkov, Dušan and Nastasijević, Branislav and Živković-Radovanović, Vukosava and Janjić, Goran and Dimović, Slavko and Mutavdžić, Dragosav and Stanić, Vojislav",
year = "2018",
abstract = "In this study, the preparation and characterization of luminescent
fluorapatite (FAP) nanoparticles (50 and 80 nm rod-size), and their use for
labeling of Saccharomyces cerevisae cells were investigated. Fluorapatite
nanoparticles were obtained by neutralization method. X-ray diffraction
(XRD), scanning electron microscopy (SEM) and photoluminescence (PL)
methods have confirmed a rod-like material of nanometer size with
broadband emission within 380-600 nm under UVA light excitation.
Fluorescence microscopy showed that fluorapatite nano-fluorophors
successfully labeled S. cerevisiae cells, by attaching the proteins on the cell
wall. Obtained luminescent fluorapatite nanorods could be used as a probe
for visualization and detection of yeast cells.",
journal = "6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Synthesis and characterization of luminescent fluorapatite nanorods for labelling of Saccharomyces cerevisiae cells",
pages = "162-159"
}

Milojkov, D., Nastasijević, B., Živković-Radovanović, V., Janjić, G., Dimović, S., Mutavdžić, D.,& Stanić, V.. (2018). Synthesis and characterization of luminescent fluorapatite nanorods for labelling of Saccharomyces cerevisiae cells. in 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 159-162.

Milojkov D, Nastasijević B, Živković-Radovanović V, Janjić G, Dimović S, Mutavdžić D, Stanić V. Synthesis and characterization of luminescent fluorapatite nanorods for labelling of Saccharomyces cerevisiae cells. in 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2018;:159-162..

Milojkov, Dušan, Nastasijević, Branislav, Živković-Radovanović, Vukosava, Janjić, Goran, Dimović, Slavko, Mutavdžić, Dragosav, Stanić, Vojislav, "Synthesis and characterization of luminescent fluorapatite nanorods for labelling of Saccharomyces cerevisiae cells" in 6th Workshop: Specific methods for food safety and quality, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2018):159-162.

TY  - CONF
AU  - Stanić, Vojislav
AU  - Kalić, Karolina
AU  - Živković-Radovanović, Vukosava
AU  - Milojkov, Dušan
AU  - Topalović, Dušan
AU  - Tanasković, Slađana
AU  - Dimović, Slavko
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/965
AB  - In the present study, fluorapatite/polyethylene composite was prepared and 
characterized by means of different techniques (XRD and TEM). The 
effects of fluorapatite on the composite properties were investigated. It is 
found that the fluorapatite–polyethylene composite has an immiscible intercalated structure.
PB  - Belgrade : Vinča institute of nuclear sciences
C3  - 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Synthesis and characterization of fluorapatite/polyethylene composite
EP  - 34
SP  - 31
ER  - 

@conference{
author = "Stanić, Vojislav and Kalić, Karolina and Živković-Radovanović, Vukosava and Milojkov, Dušan and Topalović, Dušan and Tanasković, Slađana and Dimović, Slavko",
year = "2016",
abstract = "In the present study, fluorapatite/polyethylene composite was prepared and 
characterized by means of different techniques (XRD and TEM). The 
effects of fluorapatite on the composite properties were investigated. It is 
found that the fluorapatite–polyethylene composite has an immiscible intercalated structure.",
publisher = "Belgrade : Vinča institute of nuclear sciences",
journal = "5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Synthesis and characterization of fluorapatite/polyethylene composite",
pages = "34-31"
}

Stanić, V., Kalić, K., Živković-Radovanović, V., Milojkov, D., Topalović, D., Tanasković, S.,& Dimović, S.. (2016). Synthesis and characterization of fluorapatite/polyethylene composite. in 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Vinča institute of nuclear sciences., 31-34.

Stanić V, Kalić K, Živković-Radovanović V, Milojkov D, Topalović D, Tanasković S, Dimović S. Synthesis and characterization of fluorapatite/polyethylene composite. in 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2016;:31-34..

Stanić, Vojislav, Kalić, Karolina, Živković-Radovanović, Vukosava, Milojkov, Dušan, Topalović, Dušan, Tanasković, Slađana, Dimović, Slavko, "Synthesis and characterization of fluorapatite/polyethylene composite" in 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2016):31-34.

TY  - CONF
AU  - Milojkov, Dušan
AU  - Savić, Jasmina
AU  - Maletaškić, Jelena
AU  - Živković-Radovanović, Vukosava
AU  - Janjić, Goran
AU  - Stanić, Vojislav
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/964
AB  - Inorganic luminescent nanomaterials on apatite basis are potentially 
attractive for application as dosimeter material. Nanostructure fluorapatite was synthesized by precipitation method at room temperature. Characterization was done by XRD, FTIR and SEM in order to confirm the nanostructure of monophase material. Material has luminescence in a violet region.
PB  - Belgrade : Vinča institute of nuclear sciences
C3  - 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Synthesis and characterization of luminescent fluorapatite nanomaterial as potential dosimeter for food irradiation
EP  - 153
SP  - 150
ER  - 

@conference{
author = "Milojkov, Dušan and Savić, Jasmina and Maletaškić, Jelena and Živković-Radovanović, Vukosava and Janjić, Goran and Stanić, Vojislav",
year = "2016",
abstract = "Inorganic luminescent nanomaterials on apatite basis are potentially 
attractive for application as dosimeter material. Nanostructure fluorapatite was synthesized by precipitation method at room temperature. Characterization was done by XRD, FTIR and SEM in order to confirm the nanostructure of monophase material. Material has luminescence in a violet region.",
publisher = "Belgrade : Vinča institute of nuclear sciences",
journal = "5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Synthesis and characterization of luminescent fluorapatite nanomaterial as potential dosimeter for food irradiation",
pages = "153-150"
}

Milojkov, D., Savić, J., Maletaškić, J., Živković-Radovanović, V., Janjić, G.,& Stanić, V.. (2016). Synthesis and characterization of luminescent fluorapatite nanomaterial as potential dosimeter for food irradiation. in 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Vinča institute of nuclear sciences., 150-153.

Milojkov D, Savić J, Maletaškić J, Živković-Radovanović V, Janjić G, Stanić V. Synthesis and characterization of luminescent fluorapatite nanomaterial as potential dosimeter for food irradiation. in 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2016;:150-153..

Milojkov, Dušan, Savić, Jasmina, Maletaškić, Jelena, Živković-Radovanović, Vukosava, Janjić, Goran, Stanić, Vojislav, "Synthesis and characterization of luminescent fluorapatite nanomaterial as potential dosimeter for food irradiation" in 5th Workshop: Specific methods for food safety and quality, 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2016):150-153.

TY  - JOUR
AU  - Stanić, Vojislav
AU  - Radosavljević-Mihajlović, Ana
AU  - Živković-Radovanović, Vukosava
AU  - Nastasijević, Branislav
AU  - Marković, Jelena
AU  - Budimir, Milica
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/998
AB  - Silver doped fluorapatite nanopowders were synthesised by neutralization method, which consists of dissolving Ag2O in solution of HF and H3PO4 and addition to suspension of Ca(OH)2. The powder XRD, SEM and FTIR studies indicated the formation of a fluorapatite nanomaterials with average length of the particles is about 80 nm and a width of about 15 nm. The FTIR studies show that carbonate content in samples is very small and carbonte ions substitute both phosphate and hydroxyl groups in the crystal structure of samples, forming AB-type fluorapatite. Antibacterial studies have demonstrated that all Ag+-doped fluorapatite samples exhibit bactericidal effect against pathogens: Staphylococcus aureus, Micrococcus luteus and Kllebsiela pneumoniae. Antibacterial activity increased with the increase of Ag+ in the samples. The atomic force microscopy studies revealed extensive damage to the bacterial cell envelops in the presence of Ag+-doped fluorapatite particles which may lead to their death. The synthesized Ag+-doped fluorapatite nanomaterials are promising as antibacterial biomaterials in orthopedics and dentistry.
PB  - Elsevier B.V.
T2  - Applied Surface Science
T1  - Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method
EP  - 80
IS  - 15
SP  - 72
VL  - 337
DO  - 10.1016/j.apsusc.2015.02.065
ER  - 

@article{
author = "Stanić, Vojislav and Radosavljević-Mihajlović, Ana and Živković-Radovanović, Vukosava and Nastasijević, Branislav and Marković, Jelena and Budimir, Milica",
year = "2015",
abstract = "Silver doped fluorapatite nanopowders were synthesised by neutralization method, which consists of dissolving Ag2O in solution of HF and H3PO4 and addition to suspension of Ca(OH)2. The powder XRD, SEM and FTIR studies indicated the formation of a fluorapatite nanomaterials with average length of the particles is about 80 nm and a width of about 15 nm. The FTIR studies show that carbonate content in samples is very small and carbonte ions substitute both phosphate and hydroxyl groups in the crystal structure of samples, forming AB-type fluorapatite. Antibacterial studies have demonstrated that all Ag+-doped fluorapatite samples exhibit bactericidal effect against pathogens: Staphylococcus aureus, Micrococcus luteus and Kllebsiela pneumoniae. Antibacterial activity increased with the increase of Ag+ in the samples. The atomic force microscopy studies revealed extensive damage to the bacterial cell envelops in the presence of Ag+-doped fluorapatite particles which may lead to their death. The synthesized Ag+-doped fluorapatite nanomaterials are promising as antibacterial biomaterials in orthopedics and dentistry.",
publisher = "Elsevier B.V.",
journal = "Applied Surface Science",
title = "Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method",
pages = "80-72",
number = "15",
volume = "337",
doi = "10.1016/j.apsusc.2015.02.065"
}

Stanić, V., Radosavljević-Mihajlović, A., Živković-Radovanović, V., Nastasijević, B., Marković, J.,& Budimir, M.. (2015). Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method. in Applied Surface Science
Elsevier B.V.., 337(15), 72-80.
https://doi.org/10.1016/j.apsusc.2015.02.065

Stanić V, Radosavljević-Mihajlović A, Živković-Radovanović V, Nastasijević B, Marković J, Budimir M. Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method. in Applied Surface Science. 2015;337(15):72-80.
doi:10.1016/j.apsusc.2015.02.065 .

Stanić, Vojislav, Radosavljević-Mihajlović, Ana, Živković-Radovanović, Vukosava, Nastasijević, Branislav, Marković, Jelena, Budimir, Milica, "Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method" in Applied Surface Science, 337, no. 15 (2015):72-80,
https://doi.org/10.1016/j.apsusc.2015.02.065 . .