TY  - JOUR
AU  - Krstić, Jelena
AU  - Radosavljević, Aleksandra
AU  - Spasojević, Jelena P.
AU  - Nikolić, Nikolina
AU  - Jovanović, Uroš D.
AU  - Abazović, Nadica
AU  - Kačarević-Popović, Zorica M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10183
AB  - Hydrogels consisting of radiation-degraded chitosan, poly(vinyl alcohol), and Ag nano-filler, were prepared by γ-irradiation in two-stage and single-stage procedures to examine the role of the synthesis procedure in improving the antibacterial activity. The light scattering method showed that radiation-degradation of chitosan occurred both by breaking the glucoside bonds and by Maillard's reaction. Elemental analysis indicated a reduction in the degree of deacetylation after degradation. The product of Amadori rearrangement and pigmented product melanoidins were determined by 1H NMR, FTIR, UV–Vis, and fluorescence spectroscopy. Enhancement of in vitro antibacterial activity of nanocomposites against Staphylococcus aureus and Escherichia coli was achieved by a single-stage procedure which results in greater mobility of radiation-modified chitosan in the network. This allows the exploitation of its potential, which is reflected in the possibility of the complexing of ultrasmall molecular Ag clusters. These complexes have a considerably stronger antibacterial effect. Ag in molecular form was confirmed by XPS analysis.
T2  - Radiation Physics and Chemistry
T1  - Improvement of antibacterial activity of Ag-poly(vinyl-alcohol)/chitosan hydrogel by optimizing the procedure of radiolytic synthesis
VL  - 194
SP  - 110045
DO  - 10.1016/j.radphyschem.2022.110045
ER  - 

@article{
author = "Krstić, Jelena and Radosavljević, Aleksandra and Spasojević, Jelena P. and Nikolić, Nikolina and Jovanović, Uroš D. and Abazović, Nadica and Kačarević-Popović, Zorica M.",
year = "2022",
abstract = "Hydrogels consisting of radiation-degraded chitosan, poly(vinyl alcohol), and Ag nano-filler, were prepared by γ-irradiation in two-stage and single-stage procedures to examine the role of the synthesis procedure in improving the antibacterial activity. The light scattering method showed that radiation-degradation of chitosan occurred both by breaking the glucoside bonds and by Maillard's reaction. Elemental analysis indicated a reduction in the degree of deacetylation after degradation. The product of Amadori rearrangement and pigmented product melanoidins were determined by 1H NMR, FTIR, UV–Vis, and fluorescence spectroscopy. Enhancement of in vitro antibacterial activity of nanocomposites against Staphylococcus aureus and Escherichia coli was achieved by a single-stage procedure which results in greater mobility of radiation-modified chitosan in the network. This allows the exploitation of its potential, which is reflected in the possibility of the complexing of ultrasmall molecular Ag clusters. These complexes have a considerably stronger antibacterial effect. Ag in molecular form was confirmed by XPS analysis.",
journal = "Radiation Physics and Chemistry",
title = "Improvement of antibacterial activity of Ag-poly(vinyl-alcohol)/chitosan hydrogel by optimizing the procedure of radiolytic synthesis",
volume = "194",
pages = "110045",
doi = "10.1016/j.radphyschem.2022.110045"
}

Krstić, J., Radosavljević, A., Spasojević, J. P., Nikolić, N., Jovanović, U. D., Abazović, N.,& Kačarević-Popović, Z. M.. (2022). Improvement of antibacterial activity of Ag-poly(vinyl-alcohol)/chitosan hydrogel by optimizing the procedure of radiolytic synthesis. in Radiation Physics and Chemistry, 194, 110045.
https://doi.org/10.1016/j.radphyschem.2022.110045

Krstić J, Radosavljević A, Spasojević JP, Nikolić N, Jovanović UD, Abazović N, Kačarević-Popović ZM. Improvement of antibacterial activity of Ag-poly(vinyl-alcohol)/chitosan hydrogel by optimizing the procedure of radiolytic synthesis. in Radiation Physics and Chemistry. 2022;194:110045.
doi:10.1016/j.radphyschem.2022.110045 .

Krstić, Jelena, Radosavljević, Aleksandra, Spasojević, Jelena P., Nikolić, Nikolina, Jovanović, Uroš D., Abazović, Nadica, Kačarević-Popović, Zorica M., "Improvement of antibacterial activity of Ag-poly(vinyl-alcohol)/chitosan hydrogel by optimizing the procedure of radiolytic synthesis" in Radiation Physics and Chemistry, 194 (2022):110045,
https://doi.org/10.1016/j.radphyschem.2022.110045 . .

TY  - JOUR
AU  - Jovanović, Uroš D.
AU  - Marković, Mirjana
AU  - Čokeša, Đuro
AU  - Živković, Nikola V.
AU  - Radmanović, Svjetlana B.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10351
AB  - The main goal of this work was to estimate the influence of carboxyl and phenolic groups, as well as aromatic, aliphatic and polysaccharide components, on the soil humic acids (HA) self-aggregation process. Soil HAs (leptosol and regosol) were separated using base resin getting fractions with different functional group contents. Blocking of carboxyl groups was performed using the esterification procedure to estimate the participation of each functional group in the HA aggregation. The presence of HA structural components was evaluated by potentiometric titration and ATR-FTIR. The aggregation was monitored at pH 3 using dynamic light scattering. Results indicated that the higher group content, the HA aggregation is less pronounced. A significant positive correlation of aliphatic C and aggregate size revealed their dominant influence in the HA self-aggregation. A lower abundance of aliphatic C in HA fractions could be considered as not sufficient to start the process. An increase of aromatic C in esters likely pointed out to its participation in hydrophobic bonding and, consequently, more pronounced aggregation. The relation of HA self-aggregate size with carboxyl and phenolic group, as well as aliphatic C, at low pH, could be considered universal regardless of the structural characteristics of the original or modified HA forms.
T2  - Journal of the Serbian Chemical Society
T1  - Self-aggregation of soil humic acids with respect to their structural characteristics
VL  - 87
IS  - 6
SP  - 761
EP  - 773
DO  - 10.2298/JSC211125010J
ER  - 

@article{
author = "Jovanović, Uroš D. and Marković, Mirjana and Čokeša, Đuro and Živković, Nikola V. and Radmanović, Svjetlana B.",
year = "2022",
abstract = "The main goal of this work was to estimate the influence of carboxyl and phenolic groups, as well as aromatic, aliphatic and polysaccharide components, on the soil humic acids (HA) self-aggregation process. Soil HAs (leptosol and regosol) were separated using base resin getting fractions with different functional group contents. Blocking of carboxyl groups was performed using the esterification procedure to estimate the participation of each functional group in the HA aggregation. The presence of HA structural components was evaluated by potentiometric titration and ATR-FTIR. The aggregation was monitored at pH 3 using dynamic light scattering. Results indicated that the higher group content, the HA aggregation is less pronounced. A significant positive correlation of aliphatic C and aggregate size revealed their dominant influence in the HA self-aggregation. A lower abundance of aliphatic C in HA fractions could be considered as not sufficient to start the process. An increase of aromatic C in esters likely pointed out to its participation in hydrophobic bonding and, consequently, more pronounced aggregation. The relation of HA self-aggregate size with carboxyl and phenolic group, as well as aliphatic C, at low pH, could be considered universal regardless of the structural characteristics of the original or modified HA forms.",
journal = "Journal of the Serbian Chemical Society",
title = "Self-aggregation of soil humic acids with respect to their structural characteristics",
volume = "87",
number = "6",
pages = "761-773",
doi = "10.2298/JSC211125010J"
}

Jovanović, U. D., Marković, M., Čokeša, Đ., Živković, N. V.,& Radmanović, S. B.. (2022). Self-aggregation of soil humic acids with respect to their structural characteristics. in Journal of the Serbian Chemical Society, 87(6), 761-773.
https://doi.org/10.2298/JSC211125010J

Jovanović UD, Marković M, Čokeša Đ, Živković NV, Radmanović SB. Self-aggregation of soil humic acids with respect to their structural characteristics. in Journal of the Serbian Chemical Society. 2022;87(6):761-773.
doi:10.2298/JSC211125010J .

Jovanović, Uroš D., Marković, Mirjana, Čokeša, Đuro, Živković, Nikola V., Radmanović, Svjetlana B., "Self-aggregation of soil humic acids with respect to their structural characteristics" in Journal of the Serbian Chemical Society, 87, no. 6 (2022):761-773,
https://doi.org/10.2298/JSC211125010J . .

TY  - JOUR
AU  - Radmanović, Svjetlana B.
AU  - Marković, Mirjana
AU  - Jovanović, Uroš D.
AU  - Gajić-Kvaščev, Maja
AU  - Čokeša, Đuro
AU  - Lilić, Jasmina
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9020
AB  - Part of Cu post flotation tailings of Serbia ZiJin Bor Copper, Serbia, was reclaimed by restoration of top soil with arable soils, and revegetation in 1991. Humic acids isolated from these Technosols were investigated to find out if their properties underwent any changes since reclamation. Two groups of control samples were used. Elemental composition (CHNS analysis) falls within the range of average soil humic acids. Humic acids belong to the type B pointing out to its lower humification degree (UV?Vis). Relative abundances of functional groups are ranged as follows: polysaccharide C ??aromatic C > carboxyl C > OH group > aliphatic C. Aromaticity indexes are low, 1.88? 3.25 (ATR-FTIR). Basic units at pH 10 are in the 11.7?26.8 nm range. Pronounced reaggregation (1462-?5218 nm) at pH 3 points out to less expressed humic acid sol stability, as well as to increase in aromatic condensation degree (dynamic light scattering). No significant changes have occurred in technosol humic acids since the recultivation, confirming stability of their properties over time (PCA). Nevertheless, humic acids from very strongly acidic Technosols show higher humifycation degree possibly originating from arable soils used in reclamation, but more likely from low soil pH and low litter input, results of unsuccessful reclamation.
T2  - Journal of the Serbian Chemical Society
T1  - Properties of humic acids from copper tailings 20 years after reclamation
VL  - 85
IS  - 3
SP  - 407
EP  - 419
DO  - 10.2298/JSC190717112R
ER  - 

@article{
author = "Radmanović, Svjetlana B. and Marković, Mirjana and Jovanović, Uroš D. and Gajić-Kvaščev, Maja and Čokeša, Đuro and Lilić, Jasmina",
year = "2020",
abstract = "Part of Cu post flotation tailings of Serbia ZiJin Bor Copper, Serbia, was reclaimed by restoration of top soil with arable soils, and revegetation in 1991. Humic acids isolated from these Technosols were investigated to find out if their properties underwent any changes since reclamation. Two groups of control samples were used. Elemental composition (CHNS analysis) falls within the range of average soil humic acids. Humic acids belong to the type B pointing out to its lower humification degree (UV?Vis). Relative abundances of functional groups are ranged as follows: polysaccharide C ??aromatic C > carboxyl C > OH group > aliphatic C. Aromaticity indexes are low, 1.88? 3.25 (ATR-FTIR). Basic units at pH 10 are in the 11.7?26.8 nm range. Pronounced reaggregation (1462-?5218 nm) at pH 3 points out to less expressed humic acid sol stability, as well as to increase in aromatic condensation degree (dynamic light scattering). No significant changes have occurred in technosol humic acids since the recultivation, confirming stability of their properties over time (PCA). Nevertheless, humic acids from very strongly acidic Technosols show higher humifycation degree possibly originating from arable soils used in reclamation, but more likely from low soil pH and low litter input, results of unsuccessful reclamation.",
journal = "Journal of the Serbian Chemical Society",
title = "Properties of humic acids from copper tailings 20 years after reclamation",
volume = "85",
number = "3",
pages = "407-419",
doi = "10.2298/JSC190717112R"
}

Radmanović, S. B., Marković, M., Jovanović, U. D., Gajić-Kvaščev, M., Čokeša, Đ.,& Lilić, J.. (2020). Properties of humic acids from copper tailings 20 years after reclamation. in Journal of the Serbian Chemical Society, 85(3), 407-419.
https://doi.org/10.2298/JSC190717112R

Radmanović SB, Marković M, Jovanović UD, Gajić-Kvaščev M, Čokeša Đ, Lilić J. Properties of humic acids from copper tailings 20 years after reclamation. in Journal of the Serbian Chemical Society. 2020;85(3):407-419.
doi:10.2298/JSC190717112R .

Radmanović, Svjetlana B., Marković, Mirjana, Jovanović, Uroš D., Gajić-Kvaščev, Maja, Čokeša, Đuro, Lilić, Jasmina, "Properties of humic acids from copper tailings 20 years after reclamation" in Journal of the Serbian Chemical Society, 85, no. 3 (2020):407-419,
https://doi.org/10.2298/JSC190717112R . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Matović, Ljiljana
AU  - Ružić, Jovana
AU  - Golubović, Željko
AU  - Jovanović, Uroš D.
AU  - Mentus, Slavko V.
AU  - Dondur, Vera
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1038
AB  - A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Journal of Nuclear Materials
T1  - Safe trapping of cesium into pollucite structure by hot-pressing method
VL  - 474
SP  - 35
EP  - 44
DO  - 10.1016/j.jnucmat.2016.03.006
ER  - 

@article{
author = "Omerašević, Mia and Matović, Ljiljana and Ružić, Jovana and Golubović, Željko and Jovanović, Uroš D. and Mentus, Slavko V. and Dondur, Vera",
year = "2016",
abstract = "A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Nuclear Materials",
title = "Safe trapping of cesium into pollucite structure by hot-pressing method",
volume = "474",
pages = "35-44",
doi = "10.1016/j.jnucmat.2016.03.006"
}

Omerašević, M., Matović, L., Ružić, J., Golubović, Ž., Jovanović, U. D., Mentus, S. V.,& Dondur, V.. (2016). Safe trapping of cesium into pollucite structure by hot-pressing method. in Journal of Nuclear Materials
Elsevier., 474, 35-44.
https://doi.org/10.1016/j.jnucmat.2016.03.006

Omerašević M, Matović L, Ružić J, Golubović Ž, Jovanović UD, Mentus SV, Dondur V. Safe trapping of cesium into pollucite structure by hot-pressing method. in Journal of Nuclear Materials. 2016;474:35-44.
doi:10.1016/j.jnucmat.2016.03.006 .

Omerašević, Mia, Matović, Ljiljana, Ružić, Jovana, Golubović, Željko, Jovanović, Uroš D., Mentus, Slavko V., Dondur, Vera, "Safe trapping of cesium into pollucite structure by hot-pressing method" in Journal of Nuclear Materials, 474 (2016):35-44,
https://doi.org/10.1016/j.jnucmat.2016.03.006 . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Ružić, Jovana
AU  - Vuković, Nikola
AU  - Jovanović, Uroš D.
AU  - Mirković, Miljana M.
AU  - Maksimović, Vesna
AU  - Dondur, Vera
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1130
AB  - The possibility to use natural zeolite - clinoptilolite as a host material for radioactive Cs immobilization has been investigated. Cs-exchanged form of clinoptilolite which was prepared by treatment of clinoptilolite powder with 0.25 M CsCl solution was compacted. Both, powder and powder compact of exchanged clinoptilolite were thermally treated at 1200 C-0. The XRPD analysis showed that Cs was successfully immobilized after heat treatment by formation of stable cesium dodecaoxo-alumopentasilicate in both, powder sample and compact. The newly formed compound showed satisfactory Cs ions retention during leaching test. The sintered compact showed somewhat better resistance to Cs leaching than the thermally treated powder. The compressive strength of sintered compact was close to 200 MPa which is more than enough for easy handling and safe storage.
T2  - Science of Sintering
T1  - Removal of Cs Ions from Aqueous Solutions by Using Matrices of Natural Clinoptilolite and its Safe Disposal
VL  - 48
IS  - 1
SP  - 101
EP  - 107
DO  - 10.2298/SOS1601101O
ER  - 

@article{
author = "Omerašević, Mia and Ružić, Jovana and Vuković, Nikola and Jovanović, Uroš D. and Mirković, Miljana M. and Maksimović, Vesna and Dondur, Vera",
year = "2016",
abstract = "The possibility to use natural zeolite - clinoptilolite as a host material for radioactive Cs immobilization has been investigated. Cs-exchanged form of clinoptilolite which was prepared by treatment of clinoptilolite powder with 0.25 M CsCl solution was compacted. Both, powder and powder compact of exchanged clinoptilolite were thermally treated at 1200 C-0. The XRPD analysis showed that Cs was successfully immobilized after heat treatment by formation of stable cesium dodecaoxo-alumopentasilicate in both, powder sample and compact. The newly formed compound showed satisfactory Cs ions retention during leaching test. The sintered compact showed somewhat better resistance to Cs leaching than the thermally treated powder. The compressive strength of sintered compact was close to 200 MPa which is more than enough for easy handling and safe storage.",
journal = "Science of Sintering",
title = "Removal of Cs Ions from Aqueous Solutions by Using Matrices of Natural Clinoptilolite and its Safe Disposal",
volume = "48",
number = "1",
pages = "101-107",
doi = "10.2298/SOS1601101O"
}

Omerašević, M., Ružić, J., Vuković, N., Jovanović, U. D., Mirković, M. M., Maksimović, V.,& Dondur, V.. (2016). Removal of Cs Ions from Aqueous Solutions by Using Matrices of Natural Clinoptilolite and its Safe Disposal. in Science of Sintering, 48(1), 101-107.
https://doi.org/10.2298/SOS1601101O

Omerašević M, Ružić J, Vuković N, Jovanović UD, Mirković MM, Maksimović V, Dondur V. Removal of Cs Ions from Aqueous Solutions by Using Matrices of Natural Clinoptilolite and its Safe Disposal. in Science of Sintering. 2016;48(1):101-107.
doi:10.2298/SOS1601101O .

Omerašević, Mia, Ružić, Jovana, Vuković, Nikola, Jovanović, Uroš D., Mirković, Miljana M., Maksimović, Vesna, Dondur, Vera, "Removal of Cs Ions from Aqueous Solutions by Using Matrices of Natural Clinoptilolite and its Safe Disposal" in Science of Sintering, 48, no. 1 (2016):101-107,
https://doi.org/10.2298/SOS1601101O . .

TY  - JOUR
AU  - Božić, Dušan
AU  - Vilotijević, Miroljub N.
AU  - Ružić, Jovana
AU  - Jovanović, Uroš D.
AU  - Stašić, Jelena
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1417
AB  - The present work demonstrates a procedure for synthesis of stainless steel powder by gravity sintering method. As an additive to the basic powder, NiB powder was added in the amount of 0.2 - 1.0 wt.%. Gravity sintering was done in vacuum, at the temperatures of 1100 degrees C - 1250 degrees C, in the course of 3 - 60 min, using ceramic mould. Structural characterization was conducted by XRD, and microstructural analysis by optical and scanning electron microscope (SEM). Mechanical properties were investigated by tensile tests with steel rings. Density and permeability were determined by standard techniques for porous samples. Gravity sintered stainless steel with NiB addition had more superior mechanical and physico-chemical properties compared to stainless steel obtained by standard powder metallurgy procedures - pressing and sintering.
T2  - Science of Sintering
T1  - Microstructure and Properties of Gravity Sintered 316L Stainless Steel Powder with Nickel boride Addition
VL  - 48
IS  - 3
SP  - 293
EP  - 302
DO  - 10.2298/SOS1603293B
ER  - 

@article{
author = "Božić, Dušan and Vilotijević, Miroljub N. and Ružić, Jovana and Jovanović, Uroš D. and Stašić, Jelena",
year = "2016",
abstract = "The present work demonstrates a procedure for synthesis of stainless steel powder by gravity sintering method. As an additive to the basic powder, NiB powder was added in the amount of 0.2 - 1.0 wt.%. Gravity sintering was done in vacuum, at the temperatures of 1100 degrees C - 1250 degrees C, in the course of 3 - 60 min, using ceramic mould. Structural characterization was conducted by XRD, and microstructural analysis by optical and scanning electron microscope (SEM). Mechanical properties were investigated by tensile tests with steel rings. Density and permeability were determined by standard techniques for porous samples. Gravity sintered stainless steel with NiB addition had more superior mechanical and physico-chemical properties compared to stainless steel obtained by standard powder metallurgy procedures - pressing and sintering.",
journal = "Science of Sintering",
title = "Microstructure and Properties of Gravity Sintered 316L Stainless Steel Powder with Nickel boride Addition",
volume = "48",
number = "3",
pages = "293-302",
doi = "10.2298/SOS1603293B"
}

Božić, D., Vilotijević, M. N., Ružić, J., Jovanović, U. D.,& Stašić, J.. (2016). Microstructure and Properties of Gravity Sintered 316L Stainless Steel Powder with Nickel boride Addition. in Science of Sintering, 48(3), 293-302.
https://doi.org/10.2298/SOS1603293B

Božić D, Vilotijević MN, Ružić J, Jovanović UD, Stašić J. Microstructure and Properties of Gravity Sintered 316L Stainless Steel Powder with Nickel boride Addition. in Science of Sintering. 2016;48(3):293-302.
doi:10.2298/SOS1603293B .

Božić, Dušan, Vilotijević, Miroljub N., Ružić, Jovana, Jovanović, Uroš D., Stašić, Jelena, "Microstructure and Properties of Gravity Sintered 316L Stainless Steel Powder with Nickel boride Addition" in Science of Sintering, 48, no. 3 (2016):293-302,
https://doi.org/10.2298/SOS1603293B . .

TY  - JOUR
AU  - Savić-Biserčić, Marjetka
AU  - Pezo, Lato
AU  - Ignjatović, Ivana Sredović
AU  - Ignjatović, Ljubiša M.
AU  - Savić, Andrija B.
AU  - Jovanović, Uroš D.
AU  - Andrić, Velibor
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1220
AB  - Two mechanical extraction techniques were used for the extraction of environmentaly interesting components of coal fly ash: shaking, during which the extraction process lasted from 6 up to 24 h, and sonication that lasted from 15 up to 60 min, using water as extractant. The concentration of anions in fly ash extracts was determined by ion chromatography, while atomic absorption spectrometry was used for determination of: As, Pb, Cd, Ni, Cr, Zn, Cu, Fe, Mn and Al. The ultrasonication yielded slightly higher amounts of extracted anions as well as Pb, Al, Mn and Fe cations, while shaking-assisted extraction was more efficient for the Cr, As, Zn and Ni ions. The changes in pH value, particle size distribution within colloid solution, zeta potential and conductivity during ultrasound-assisted extraction were measured in order to explain changes that occur on the surface of fly ash particles contacting water and different processes (adsorption, ion exchange and flocculation) that develop under natural conditions. Principal Component Analysis was used for assessing the effect of observed process parameters. It is essential to evaluate quantity of these elements leachable from coal fly ash into the surface waters in natural conditions in order to prevent contamination of the environment.
T2  - Journal of the Serbian Chemical Society
T1  - Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash
VL  - 81
IS  - 7
SP  - 813
EP  - 827
DO  - 10.2298/JSC151222027B
ER  - 

@article{
author = "Savić-Biserčić, Marjetka and Pezo, Lato and Ignjatović, Ivana Sredović and Ignjatović, Ljubiša M. and Savić, Andrija B. and Jovanović, Uroš D. and Andrić, Velibor",
year = "2016",
abstract = "Two mechanical extraction techniques were used for the extraction of environmentaly interesting components of coal fly ash: shaking, during which the extraction process lasted from 6 up to 24 h, and sonication that lasted from 15 up to 60 min, using water as extractant. The concentration of anions in fly ash extracts was determined by ion chromatography, while atomic absorption spectrometry was used for determination of: As, Pb, Cd, Ni, Cr, Zn, Cu, Fe, Mn and Al. The ultrasonication yielded slightly higher amounts of extracted anions as well as Pb, Al, Mn and Fe cations, while shaking-assisted extraction was more efficient for the Cr, As, Zn and Ni ions. The changes in pH value, particle size distribution within colloid solution, zeta potential and conductivity during ultrasound-assisted extraction were measured in order to explain changes that occur on the surface of fly ash particles contacting water and different processes (adsorption, ion exchange and flocculation) that develop under natural conditions. Principal Component Analysis was used for assessing the effect of observed process parameters. It is essential to evaluate quantity of these elements leachable from coal fly ash into the surface waters in natural conditions in order to prevent contamination of the environment.",
journal = "Journal of the Serbian Chemical Society",
title = "Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash",
volume = "81",
number = "7",
pages = "813-827",
doi = "10.2298/JSC151222027B"
}

Savić-Biserčić, M., Pezo, L., Ignjatović, I. S., Ignjatović, L. M., Savić, A. B., Jovanović, U. D.,& Andrić, V.. (2016). Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash. in Journal of the Serbian Chemical Society, 81(7), 813-827.
https://doi.org/10.2298/JSC151222027B

Savić-Biserčić M, Pezo L, Ignjatović IS, Ignjatović LM, Savić AB, Jovanović UD, Andrić V. Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash. in Journal of the Serbian Chemical Society. 2016;81(7):813-827.
doi:10.2298/JSC151222027B .

Savić-Biserčić, Marjetka, Pezo, Lato, Ignjatović, Ivana Sredović, Ignjatović, Ljubiša M., Savić, Andrija B., Jovanović, Uroš D., Andrić, Velibor, "Ultrasound and shacking-assisted water-leaching of anions and cations from fly ash" in Journal of the Serbian Chemical Society, 81, no. 7 (2016):813-827,
https://doi.org/10.2298/JSC151222027B . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Ranković, Dragan
AU  - Jovanović, Uroš D.
AU  - Stoiljković, Milovan
AU  - Savović, Jelena
AU  - Trtica, Milan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/867
AB  - The applicability of a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 mu m and 100 ns pulse length (initial spike), induced plasma under reduced air pressure for spectrochemical analysis of bronze and brass samples was investigated. The plasma consisted of two clearly distinguished and spatially separated regions and expanded to a distance of about 10 mm from the surface. The elemental composition of the samples was determined using a time-integrated space-resolved laser-induced plasma spectroscopic (TISR-LIPS) technique. Sharp and well-resolved spectral lines mostly atomic, and negligibly low background emission, were obtained from a plasma region 7 mm from the target surface. Good signal to background and signal to noise ratios were obtained. The estimated detection limits for the trace elements Mg, Fe, Al and Ca were in the order of 10 ppm in bronze and around 50 ppm in brass. Damage on the investigated samples induced by TEA CO2 laser radiation was negligible.
T2  - Journal of the Serbian Chemical Society
T1  - Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper-based alloys
VL  - 80
IS  - 12
SP  - 1505
EP  - 1513
DO  - 10.2298/JSC150416061M
ER  - 

@article{
author = "Momčilović, Miloš and Ciganović, Jovan and Ranković, Dragan and Jovanović, Uroš D. and Stoiljković, Milovan and Savović, Jelena and Trtica, Milan",
year = "2015",
abstract = "The applicability of a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 mu m and 100 ns pulse length (initial spike), induced plasma under reduced air pressure for spectrochemical analysis of bronze and brass samples was investigated. The plasma consisted of two clearly distinguished and spatially separated regions and expanded to a distance of about 10 mm from the surface. The elemental composition of the samples was determined using a time-integrated space-resolved laser-induced plasma spectroscopic (TISR-LIPS) technique. Sharp and well-resolved spectral lines mostly atomic, and negligibly low background emission, were obtained from a plasma region 7 mm from the target surface. Good signal to background and signal to noise ratios were obtained. The estimated detection limits for the trace elements Mg, Fe, Al and Ca were in the order of 10 ppm in bronze and around 50 ppm in brass. Damage on the investigated samples induced by TEA CO2 laser radiation was negligible.",
journal = "Journal of the Serbian Chemical Society",
title = "Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper-based alloys",
volume = "80",
number = "12",
pages = "1505-1513",
doi = "10.2298/JSC150416061M"
}

Momčilović, M., Ciganović, J., Ranković, D., Jovanović, U. D., Stoiljković, M., Savović, J.,& Trtica, M.. (2015). Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper-based alloys. in Journal of the Serbian Chemical Society, 80(12), 1505-1513.
https://doi.org/10.2298/JSC150416061M

Momčilović M, Ciganović J, Ranković D, Jovanović UD, Stoiljković M, Savović J, Trtica M. Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper-based alloys. in Journal of the Serbian Chemical Society. 2015;80(12):1505-1513.
doi:10.2298/JSC150416061M .

Momčilović, Miloš, Ciganović, Jovan, Ranković, Dragan, Jovanović, Uroš D., Stoiljković, Milovan, Savović, Jelena, Trtica, Milan, "Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper-based alloys" in Journal of the Serbian Chemical Society, 80, no. 12 (2015):1505-1513,
https://doi.org/10.2298/JSC150416061M . .

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Marković, Smilja
AU  - Omerašević, Mia
AU  - Jovanović, Uroš D.
AU  - Andrić, Velibor
AU  - Vukanac, Ivana
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/854
AB  - The removal of Cs (I) ions from aqueous solution was studied using natural diatomite as adsorption materials originated from Rudovci, Serbia. The microstructure of natural diatomite has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) while the degree of Cs adsorption was evaluated by atomic emission spectroscopy. The cation exchange capacity (CEC) values for natural diatomite was 50 meq/100g. Depending on whether the Cs adsorption occurred in the acidic and alkaline media at a temperature of 298.15 K in acidic media Delta G(0) values was -12.674 kJ/mol, while in alkaline media Delta G(0) was 13.142 kJ/mol and a change of Delta S-0 to 42.51 J/molK in acidic media and 44.08 J/molK in alkaline medium.
T2  - Science of Sintering
T1  - Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids
VL  - 47
IS  - 3
SP  - 299
EP  - 309
DO  - 10.2298/SOS1503299N
ER  - 

@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Marković, Smilja and Omerašević, Mia and Jovanović, Uroš D. and Andrić, Velibor and Vukanac, Ivana",
year = "2015",
abstract = "The removal of Cs (I) ions from aqueous solution was studied using natural diatomite as adsorption materials originated from Rudovci, Serbia. The microstructure of natural diatomite has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) while the degree of Cs adsorption was evaluated by atomic emission spectroscopy. The cation exchange capacity (CEC) values for natural diatomite was 50 meq/100g. Depending on whether the Cs adsorption occurred in the acidic and alkaline media at a temperature of 298.15 K in acidic media Delta G(0) values was -12.674 kJ/mol, while in alkaline media Delta G(0) was 13.142 kJ/mol and a change of Delta S-0 to 42.51 J/molK in acidic media and 44.08 J/molK in alkaline medium.",
journal = "Science of Sintering",
title = "Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids",
volume = "47",
number = "3",
pages = "299-309",
doi = "10.2298/SOS1503299N"
}

Nenadović, S. S., Kljajević, L. M., Marković, S., Omerašević, M., Jovanović, U. D., Andrić, V.,& Vukanac, I.. (2015). Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids. in Science of Sintering, 47(3), 299-309.
https://doi.org/10.2298/SOS1503299N

Nenadović SS, Kljajević LM, Marković S, Omerašević M, Jovanović UD, Andrić V, Vukanac I. Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids. in Science of Sintering. 2015;47(3):299-309.
doi:10.2298/SOS1503299N .

Nenadović, Snežana S., Kljajević, Ljiljana M., Marković, Smilja, Omerašević, Mia, Jovanović, Uroš D., Andrić, Velibor, Vukanac, Ivana, "Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids" in Science of Sintering, 47, no. 3 (2015):299-309,
https://doi.org/10.2298/SOS1503299N . .

TY  - CONF
AU  - Krstić, Jelena
AU  - Spasojević, Jelena P.
AU  - Radosavljević, Aleksandra
AU  - Abazović, Nadica
AU  - Jovanović, Uroš D.
AU  - Kačarević-Popović, Zorica M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9197
AB  - Poly(vinyl alcohol)/carboxymethyl-chitosan (PVA/CMC) blend hydrogels
were synthesized by γ-radiolysis followed by freeze/thawing (FT). Previous,
the water-solubility of chitosan (CS) was obtained by γ-radiolytic acidic
degradation. CMC molecular weight characterization was performed by a
Zetasizer. The fluorescence measurements confirmed the presence of CMC
in the PVA/CMC blend hydrogels. In situ preparation of Ag nanoparticles
(AgNPs) in PVA/CMC blend hydrogel matrices has been performed
exposing hydrogels, swollen in AgNO3 solution, to γ-irradiation. The
mathematical models applied for determination swelling kinetics showed
that the initial concentrations of CMC and AgNPs directly have influence on
the swelling parameters of Ag-PVA/CMC nanocomposites. Diffusion
characteristics, determined by different diffusion models (Early Time (ET),
Late Time (LT) and Etters (E)) are less due to the presence of AgNPs.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Ag-pva/cmc blend hydrogel nanocomposite synthesized by γ-irradiation followed by freeze/thawing method
VL  - F-31-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9197
ER  - 

@conference{
author = "Krstić, Jelena and Spasojević, Jelena P. and Radosavljević, Aleksandra and Abazović, Nadica and Jovanović, Uroš D. and Kačarević-Popović, Zorica M.",
year = "2014",
abstract = "Poly(vinyl alcohol)/carboxymethyl-chitosan (PVA/CMC) blend hydrogels
were synthesized by γ-radiolysis followed by freeze/thawing (FT). Previous,
the water-solubility of chitosan (CS) was obtained by γ-radiolytic acidic
degradation. CMC molecular weight characterization was performed by a
Zetasizer. The fluorescence measurements confirmed the presence of CMC
in the PVA/CMC blend hydrogels. In situ preparation of Ag nanoparticles
(AgNPs) in PVA/CMC blend hydrogel matrices has been performed
exposing hydrogels, swollen in AgNO3 solution, to γ-irradiation. The
mathematical models applied for determination swelling kinetics showed
that the initial concentrations of CMC and AgNPs directly have influence on
the swelling parameters of Ag-PVA/CMC nanocomposites. Diffusion
characteristics, determined by different diffusion models (Early Time (ET),
Late Time (LT) and Etters (E)) are less due to the presence of AgNPs.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Ag-pva/cmc blend hydrogel nanocomposite synthesized by γ-irradiation followed by freeze/thawing method",
volume = "F-31-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9197"
}

Krstić, J., Spasojević, J. P., Radosavljević, A., Abazović, N., Jovanović, U. D.,& Kačarević-Popović, Z. M.. (2014). Ag-pva/cmc blend hydrogel nanocomposite synthesized by γ-irradiation followed by freeze/thawing method. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., F-31-P.
https://hdl.handle.net/21.15107/rcub_vinar_9197

Krstić J, Spasojević JP, Radosavljević A, Abazović N, Jovanović UD, Kačarević-Popović ZM. Ag-pva/cmc blend hydrogel nanocomposite synthesized by γ-irradiation followed by freeze/thawing method. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;F-31-P.
https://hdl.handle.net/21.15107/rcub_vinar_9197 .

Krstić, Jelena, Spasojević, Jelena P., Radosavljević, Aleksandra, Abazović, Nadica, Jovanović, Uroš D., Kačarević-Popović, Zorica M., "Ag-pva/cmc blend hydrogel nanocomposite synthesized by γ-irradiation followed by freeze/thawing method" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, F-31-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9197 .

TY  - JOUR
AU  - Jovanović, Uroš D.
AU  - Marković, Mirjana
AU  - Cupać, Svjetlana
AU  - Tomić, Zorica P.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5778
AB  - Humic acids (HAs), similar to other fractions of humic substances (HSs), have a large number of reactive functional groups enabling them to aggregate in solutions. Regardless of the origin of humic acid (aqueous or soil), this aggregation process is dependent on environmental conditions and strongly influences the mobility of soluble ionic and molecular pollutants. The aim of this work was to monitor the aggregation process of two humic acids isolated from different mineral soils (IHSS Elliot soil HA standard and Rendzic Leptosol HA) in the 2-11 pH range. Changes in aggregate size in HA sols were followed up using dynamic light scattering (DLS), while zeta potential (ZP) measurements in the same pH range were performed applying laser Doppler electrophoresis (LDE) technique. The effect of HA sol concentration and soil source on aggregation was examined as well. Besides, HA samples were characterized using Fourier transform infrared (FT-IR) spectroscopy. By inspecting HA-particle-size dependence on pH, it can be concluded that both HAs in corresponding sols behave as molecular aggregates or supramolecular structures, formed from small individual moieties (sizes LT 10 nm) at higher pH values. The ZP vs. pH curve for both HAs revealed the ZP minimum in the 5-7 pH range, caused most likely by dissociation of acidic functional groups prevailing at lower pH values and deaggregation predominating over dissociation at higher pH values.
T2  - Journal of Plant Nutrition and Soil Science
T1  - Soil humic acid aggregation by dynamic light scattering and laser Doppler electrophoresis
VL  - 176
IS  - 5
SP  - 674
EP  - 679
DO  - 10.1002/jpln.201200346
ER  - 

@article{
author = "Jovanović, Uroš D. and Marković, Mirjana and Cupać, Svjetlana and Tomić, Zorica P.",
year = "2013",
abstract = "Humic acids (HAs), similar to other fractions of humic substances (HSs), have a large number of reactive functional groups enabling them to aggregate in solutions. Regardless of the origin of humic acid (aqueous or soil), this aggregation process is dependent on environmental conditions and strongly influences the mobility of soluble ionic and molecular pollutants. The aim of this work was to monitor the aggregation process of two humic acids isolated from different mineral soils (IHSS Elliot soil HA standard and Rendzic Leptosol HA) in the 2-11 pH range. Changes in aggregate size in HA sols were followed up using dynamic light scattering (DLS), while zeta potential (ZP) measurements in the same pH range were performed applying laser Doppler electrophoresis (LDE) technique. The effect of HA sol concentration and soil source on aggregation was examined as well. Besides, HA samples were characterized using Fourier transform infrared (FT-IR) spectroscopy. By inspecting HA-particle-size dependence on pH, it can be concluded that both HAs in corresponding sols behave as molecular aggregates or supramolecular structures, formed from small individual moieties (sizes LT 10 nm) at higher pH values. The ZP vs. pH curve for both HAs revealed the ZP minimum in the 5-7 pH range, caused most likely by dissociation of acidic functional groups prevailing at lower pH values and deaggregation predominating over dissociation at higher pH values.",
journal = "Journal of Plant Nutrition and Soil Science",
title = "Soil humic acid aggregation by dynamic light scattering and laser Doppler electrophoresis",
volume = "176",
number = "5",
pages = "674-679",
doi = "10.1002/jpln.201200346"
}

Jovanović, U. D., Marković, M., Cupać, S.,& Tomić, Z. P.. (2013). Soil humic acid aggregation by dynamic light scattering and laser Doppler electrophoresis. in Journal of Plant Nutrition and Soil Science, 176(5), 674-679.
https://doi.org/10.1002/jpln.201200346

Jovanović UD, Marković M, Cupać S, Tomić ZP. Soil humic acid aggregation by dynamic light scattering and laser Doppler electrophoresis. in Journal of Plant Nutrition and Soil Science. 2013;176(5):674-679.
doi:10.1002/jpln.201200346 .

Jovanović, Uroš D., Marković, Mirjana, Cupać, Svjetlana, Tomić, Zorica P., "Soil humic acid aggregation by dynamic light scattering and laser Doppler electrophoresis" in Journal of Plant Nutrition and Soil Science, 176, no. 5 (2013):674-679,
https://doi.org/10.1002/jpln.201200346 . .

TY  - JOUR
AU  - Đukić, Anđelka B.
AU  - Jovanović, Uroš D.
AU  - Tuvic, Tamara
AU  - Andrić, Velibor
AU  - Grbović-Novaković, Jasmina
AU  - Ivanović, Nenad
AU  - Matović, Ljiljana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5545
AB  - The influence of mechanical milling of natural Serbian clay on removal of heavy metals from an aqueous medium was investigated. The simultaneous sorption of the 4 toxic heavy metals (Ni, Cr, Cd and Pb), which are often present together in numerous polluting spills and in agrochemicals was evaluated. Microstructural and morphological changes in the ball-milled clay were characterized by X-ray diffraction (XRD), particle size distribution (PSD) and scanning electron microscopy (SEM). Induced changes in microstructure were correlated to the cation exchange capacity (CEC), determined by the EPA Method 9081. The CEC value has increased from 77 meq/100 g for the unmilled clay, to 95 meq/100 g for the milled clay. Regarding the untreated clay, the cation competition reveal some differences in their sorption: complete sorption (about 98% of the initial concentration) was achieved for Cr and Pb, while about 19% of the initial concentration of Cd and Ni still persist in the solution. The order of affinity of the metal ions is Pb approximate to Cr GT Cd approximate to Ni and it has not changed upon milling. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions
VL  - 39
IS  - 6
SP  - 7173
EP  - 7178
DO  - 10.1016/j.ceramint.2013.02.061
ER  - 

@article{
author = "Đukić, Anđelka B. and Jovanović, Uroš D. and Tuvic, Tamara and Andrić, Velibor and Grbović-Novaković, Jasmina and Ivanović, Nenad and Matović, Ljiljana",
year = "2013",
abstract = "The influence of mechanical milling of natural Serbian clay on removal of heavy metals from an aqueous medium was investigated. The simultaneous sorption of the 4 toxic heavy metals (Ni, Cr, Cd and Pb), which are often present together in numerous polluting spills and in agrochemicals was evaluated. Microstructural and morphological changes in the ball-milled clay were characterized by X-ray diffraction (XRD), particle size distribution (PSD) and scanning electron microscopy (SEM). Induced changes in microstructure were correlated to the cation exchange capacity (CEC), determined by the EPA Method 9081. The CEC value has increased from 77 meq/100 g for the unmilled clay, to 95 meq/100 g for the milled clay. Regarding the untreated clay, the cation competition reveal some differences in their sorption: complete sorption (about 98% of the initial concentration) was achieved for Cr and Pb, while about 19% of the initial concentration of Cd and Ni still persist in the solution. The order of affinity of the metal ions is Pb approximate to Cr GT Cd approximate to Ni and it has not changed upon milling. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions",
volume = "39",
number = "6",
pages = "7173-7178",
doi = "10.1016/j.ceramint.2013.02.061"
}

Đukić, A. B., Jovanović, U. D., Tuvic, T., Andrić, V., Grbović-Novaković, J., Ivanović, N.,& Matović, L.. (2013). The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions. in Ceramics International, 39(6), 7173-7178.
https://doi.org/10.1016/j.ceramint.2013.02.061

Đukić AB, Jovanović UD, Tuvic T, Andrić V, Grbović-Novaković J, Ivanović N, Matović L. The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions. in Ceramics International. 2013;39(6):7173-7178.
doi:10.1016/j.ceramint.2013.02.061 .

Đukić, Anđelka B., Jovanović, Uroš D., Tuvic, Tamara, Andrić, Velibor, Grbović-Novaković, Jasmina, Ivanović, Nenad, Matović, Ljiljana, "The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions" in Ceramics International, 39, no. 6 (2013):7173-7178,
https://doi.org/10.1016/j.ceramint.2013.02.061 . .

TY  - JOUR
AU  - Stevanović, Magdalena
AU  - Savanovic, Igor
AU  - Uskokovic, Vuk
AU  - Škapin, Srečo Davor
AU  - Bracko, Ines
AU  - Jovanović, Uroš D.
AU  - Uskoković, Dragan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4659
AB  - A simple and green chemical method has been developed to synthesize stable bare and capped silver nanoparticles based on the reduction of silver ions by glucose and capping by poly(alpha,gamma,l-glutamic acid) (PGA). The use of ammonia during synthesis was avoided. PGA has had a dual role in the synthesis and was used as a capping agent to make the silver nanoparticle more biocompatible and to protect the nanoparticles from agglomerating in the liquid medium. The synthesized PGA-capped silver nanoparticles in the size range 5-45 nm were stable over long periods of time, without signs of precipitation. Morphological examination has shown that the silver nanoparticles had a nearly spherical, multiply twinned structure. The effects of the reaction temperature and the reaction time during the synthesis were investigated too. The biocompatibility of the PGA-capped silver nanoparticles is discussed in terms of in vitro toxicity with human intestinal Caco-2 cells. The samples were characterized by UV-Visible spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and zeta potential measurements.
T2  - Colloid and Polymer Science
T1  - A new, simple, green, and one-pot four-component synthesis of bare and poly(alpha,gamma,l-glutamic acid)-capped silver nanoparticles
VL  - 290
IS  - 3
SP  - 221
EP  - 231
DO  - 10.1007/s00396-011-2540-7
ER  - 

@article{
author = "Stevanović, Magdalena and Savanovic, Igor and Uskokovic, Vuk and Škapin, Srečo Davor and Bracko, Ines and Jovanović, Uroš D. and Uskoković, Dragan",
year = "2012",
abstract = "A simple and green chemical method has been developed to synthesize stable bare and capped silver nanoparticles based on the reduction of silver ions by glucose and capping by poly(alpha,gamma,l-glutamic acid) (PGA). The use of ammonia during synthesis was avoided. PGA has had a dual role in the synthesis and was used as a capping agent to make the silver nanoparticle more biocompatible and to protect the nanoparticles from agglomerating in the liquid medium. The synthesized PGA-capped silver nanoparticles in the size range 5-45 nm were stable over long periods of time, without signs of precipitation. Morphological examination has shown that the silver nanoparticles had a nearly spherical, multiply twinned structure. The effects of the reaction temperature and the reaction time during the synthesis were investigated too. The biocompatibility of the PGA-capped silver nanoparticles is discussed in terms of in vitro toxicity with human intestinal Caco-2 cells. The samples were characterized by UV-Visible spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and zeta potential measurements.",
journal = "Colloid and Polymer Science",
title = "A new, simple, green, and one-pot four-component synthesis of bare and poly(alpha,gamma,l-glutamic acid)-capped silver nanoparticles",
volume = "290",
number = "3",
pages = "221-231",
doi = "10.1007/s00396-011-2540-7"
}

Stevanović, M., Savanovic, I., Uskokovic, V., Škapin, S. D., Bracko, I., Jovanović, U. D.,& Uskoković, D.. (2012). A new, simple, green, and one-pot four-component synthesis of bare and poly(alpha,gamma,l-glutamic acid)-capped silver nanoparticles. in Colloid and Polymer Science, 290(3), 221-231.
https://doi.org/10.1007/s00396-011-2540-7

Stevanović M, Savanovic I, Uskokovic V, Škapin SD, Bracko I, Jovanović UD, Uskoković D. A new, simple, green, and one-pot four-component synthesis of bare and poly(alpha,gamma,l-glutamic acid)-capped silver nanoparticles. in Colloid and Polymer Science. 2012;290(3):221-231.
doi:10.1007/s00396-011-2540-7 .

Stevanović, Magdalena, Savanovic, Igor, Uskokovic, Vuk, Škapin, Srečo Davor, Bracko, Ines, Jovanović, Uroš D., Uskoković, Dragan, "A new, simple, green, and one-pot four-component synthesis of bare and poly(alpha,gamma,l-glutamic acid)-capped silver nanoparticles" in Colloid and Polymer Science, 290, no. 3 (2012):221-231,
https://doi.org/10.1007/s00396-011-2540-7 . .