TY  - JOUR
AU  - Đolić, Maja
AU  - Rajaković-Ognjanović, Vladana
AU  - Štrbac, Svetlana
AU  - Dimitrijević, Suzana
AU  - Mitrić, Miodrag
AU  - Onjia, Antonije
AU  - Rajaković, Ljubinka V.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3538
AB  - The objective of this study was to investigate the modification of materials used in wastewater treatment for possible antimicrobial application(s). Granulated activated carbon (GAC) and natural clinoptilolite (CLI) were activated using Cu2+-and Zn2+-ions and the disinfection ability of the resulting materials was tested. Studies of the sorption and desorption kinetics were performed in order to determine and clarify the antimicrobial activity of the metal-activated sorbents. The exact sorption capacities of the selected sorbents, GAC and CLI, activated through use of Cu2+-ions, were 15.90 and 3.60 mg/g, respectively, while for the materials activated by Zn2+-ions, the corresponding capacities were 14.00 and 4.72 mg/g,. The desorption rates were 2 and 3 orders of magnitude lower than their sorption efficacy for the Cu2+-, and Zn2+-activated sorbents, respectively. The intermediate sorption capacity and low desorption rate indicated that the overall antimicrobial activity of the metal-modified sorbents was a result of metal ions immobilized onto surface sites. The effect of antimicrobial activity of free ions desorbed from the metal-activated surface may thus be disregarded. The antimicrobial activities of Cu/GAC, Zn/GAC, Cu/CLI and Zn/ CLI were also tested against Escherichia coli, Staphylococcus aureus, and Candida albicans. After 15 min exposure, the highest levels of cell inactivation were obtained through the Cu/CLI and the Cu/GAC against E. coli, 100.0 and 98.24%, respectively. However, for S. aureus and yeast cell inactivation, all Cu2+-and Zn2+-activated sorbents proved to be unsatisfactory. A characterization of the sorbents was performed by Xray diffraction (XRD), X-ray photo electron spectroscopy (XPS), and field emission scanning electron microscopy (FE-SEM). A concentration of the adsorbed and released ions was determined by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and mass spectrometry (ICP-MS). The results showed that the antimicrobial performance of the activated sorbents depended on the surface characteristics of the material, which itself designates the distribution and the bioavailability of the activating agent.
PB  - Elsevier Science Bv, Amsterdam
T2  - New Biotechnology
T1  - Natural sorbents modified by divalent Cu2+- and Zn2+- ions and their corresponding antimicrobial activity
EP  - 159
SP  - 150
VL  - 39
DO  - 10.1016/j.nbt.2017.03.001
ER  - 

@article{
author = "Đolić, Maja and Rajaković-Ognjanović, Vladana and Štrbac, Svetlana and Dimitrijević, Suzana and Mitrić, Miodrag and Onjia, Antonije and Rajaković, Ljubinka V.",
year = "2017",
abstract = "The objective of this study was to investigate the modification of materials used in wastewater treatment for possible antimicrobial application(s). Granulated activated carbon (GAC) and natural clinoptilolite (CLI) were activated using Cu2+-and Zn2+-ions and the disinfection ability of the resulting materials was tested. Studies of the sorption and desorption kinetics were performed in order to determine and clarify the antimicrobial activity of the metal-activated sorbents. The exact sorption capacities of the selected sorbents, GAC and CLI, activated through use of Cu2+-ions, were 15.90 and 3.60 mg/g, respectively, while for the materials activated by Zn2+-ions, the corresponding capacities were 14.00 and 4.72 mg/g,. The desorption rates were 2 and 3 orders of magnitude lower than their sorption efficacy for the Cu2+-, and Zn2+-activated sorbents, respectively. The intermediate sorption capacity and low desorption rate indicated that the overall antimicrobial activity of the metal-modified sorbents was a result of metal ions immobilized onto surface sites. The effect of antimicrobial activity of free ions desorbed from the metal-activated surface may thus be disregarded. The antimicrobial activities of Cu/GAC, Zn/GAC, Cu/CLI and Zn/ CLI were also tested against Escherichia coli, Staphylococcus aureus, and Candida albicans. After 15 min exposure, the highest levels of cell inactivation were obtained through the Cu/CLI and the Cu/GAC against E. coli, 100.0 and 98.24%, respectively. However, for S. aureus and yeast cell inactivation, all Cu2+-and Zn2+-activated sorbents proved to be unsatisfactory. A characterization of the sorbents was performed by Xray diffraction (XRD), X-ray photo electron spectroscopy (XPS), and field emission scanning electron microscopy (FE-SEM). A concentration of the adsorbed and released ions was determined by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and mass spectrometry (ICP-MS). The results showed that the antimicrobial performance of the activated sorbents depended on the surface characteristics of the material, which itself designates the distribution and the bioavailability of the activating agent.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "New Biotechnology",
title = "Natural sorbents modified by divalent Cu2+- and Zn2+- ions and their corresponding antimicrobial activity",
pages = "159-150",
volume = "39",
doi = "10.1016/j.nbt.2017.03.001"
}

Đolić, M., Rajaković-Ognjanović, V., Štrbac, S., Dimitrijević, S., Mitrić, M., Onjia, A.,& Rajaković, L. V.. (2017). Natural sorbents modified by divalent Cu2+- and Zn2+- ions and their corresponding antimicrobial activity. in New Biotechnology
Elsevier Science Bv, Amsterdam., 39, 150-159.
https://doi.org/10.1016/j.nbt.2017.03.001

Đolić M, Rajaković-Ognjanović V, Štrbac S, Dimitrijević S, Mitrić M, Onjia A, Rajaković LV. Natural sorbents modified by divalent Cu2+- and Zn2+- ions and their corresponding antimicrobial activity. in New Biotechnology. 2017;39:150-159.
doi:10.1016/j.nbt.2017.03.001 .

Đolić, Maja, Rajaković-Ognjanović, Vladana, Štrbac, Svetlana, Dimitrijević, Suzana, Mitrić, Miodrag, Onjia, Antonije, Rajaković, Ljubinka V., "Natural sorbents modified by divalent Cu2+- and Zn2+- ions and their corresponding antimicrobial activity" in New Biotechnology, 39 (2017):150-159,
https://doi.org/10.1016/j.nbt.2017.03.001 . .

TY  - JOUR
AU  - Đolić, Maja
AU  - Rajaković-Ognjanović, Vladana
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Veljović, Đorđe
AU  - Dimitrijević, Suzana
AU  - Rajaković, Ljubinka V.
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3093
AB  - This study is focused on the surface modifications of the materials that are used for antimicrobial water treatment. Sorbents of different origin were activated by Ag+-ions. The selection of the most appropriate materials and the most effective activation agents was done according to the results of the sorption and desorption kinetic studies. Sorption capacities of selected sorbents: granulated activated carbon (GAC), zeolite (Z), and titanium dioxide (T), activated by Ag+-ions were following: 42.06, 13.51 and 17.53 mg/g, respectively. The antimicrobial activity of Ag/Z, Ag/GAC and Ag/T sorbents were tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and yeast C. albicans. After 15 min of exposure period, the highest cell removal was obtained using Ag/Z against S. aureus and E. coli, 98.8 and 93.5%, respectively. Yeast cell inactivation was unsatisfactory for all three activated sorbents. The antimicrobial pathway of the activated sorbents has been examined by two separate tests - Ag+-ions desorbed from the activated surface to the aqueous phase and microbial cell removal caused by the Ag+-ions from the solid phase (activated surface sites). The results indicated that disinfection process significantly depended on the microbial-activated sites interactions on the modified surface. The chemical state of the activating agent had crucial impact to the inhibition rate. The characterization of the native and modified sorbents was performed by X-ray diffraction technique, X-ray photoelectron spectroscopy and scanning electron microscope. The concentration of adsorbed and released ions was determined by inductively coupled plasma optical emission spectroscopy and mass spectrometry. The antimicrobial efficiency of activated sorbents was related not only to the concentration of the activating agent, but moreover on the surface characteristics of the material, which affects the distribution and the accessibility of the activating agent.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Surface Science
T1  - The antimicrobial efficiency of silver activated sorbents
EP  - 831
SP  - 819
VL  - 357
DO  - 10.1016/j.apsusc.2015.09.032
ER  - 

@article{
author = "Đolić, Maja and Rajaković-Ognjanović, Vladana and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Veljović, Đorđe and Dimitrijević, Suzana and Rajaković, Ljubinka V.",
year = "2015",
abstract = "This study is focused on the surface modifications of the materials that are used for antimicrobial water treatment. Sorbents of different origin were activated by Ag+-ions. The selection of the most appropriate materials and the most effective activation agents was done according to the results of the sorption and desorption kinetic studies. Sorption capacities of selected sorbents: granulated activated carbon (GAC), zeolite (Z), and titanium dioxide (T), activated by Ag+-ions were following: 42.06, 13.51 and 17.53 mg/g, respectively. The antimicrobial activity of Ag/Z, Ag/GAC and Ag/T sorbents were tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and yeast C. albicans. After 15 min of exposure period, the highest cell removal was obtained using Ag/Z against S. aureus and E. coli, 98.8 and 93.5%, respectively. Yeast cell inactivation was unsatisfactory for all three activated sorbents. The antimicrobial pathway of the activated sorbents has been examined by two separate tests - Ag+-ions desorbed from the activated surface to the aqueous phase and microbial cell removal caused by the Ag+-ions from the solid phase (activated surface sites). The results indicated that disinfection process significantly depended on the microbial-activated sites interactions on the modified surface. The chemical state of the activating agent had crucial impact to the inhibition rate. The characterization of the native and modified sorbents was performed by X-ray diffraction technique, X-ray photoelectron spectroscopy and scanning electron microscope. The concentration of adsorbed and released ions was determined by inductively coupled plasma optical emission spectroscopy and mass spectrometry. The antimicrobial efficiency of activated sorbents was related not only to the concentration of the activating agent, but moreover on the surface characteristics of the material, which affects the distribution and the accessibility of the activating agent.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Surface Science",
title = "The antimicrobial efficiency of silver activated sorbents",
pages = "831-819",
volume = "357",
doi = "10.1016/j.apsusc.2015.09.032"
}

Đolić, M., Rajaković-Ognjanović, V., Štrbac, S., Rakočević, Z. Lj., Veljović, Đ., Dimitrijević, S.,& Rajaković, L. V.. (2015). The antimicrobial efficiency of silver activated sorbents. in Applied Surface Science
Elsevier Science Bv, Amsterdam., 357, 819-831.
https://doi.org/10.1016/j.apsusc.2015.09.032

Đolić M, Rajaković-Ognjanović V, Štrbac S, Rakočević ZL, Veljović Đ, Dimitrijević S, Rajaković LV. The antimicrobial efficiency of silver activated sorbents. in Applied Surface Science. 2015;357:819-831.
doi:10.1016/j.apsusc.2015.09.032 .

Đolić, Maja, Rajaković-Ognjanović, Vladana, Štrbac, Svetlana, Rakočević, Zlatko Lj., Veljović, Đorđe, Dimitrijević, Suzana, Rajaković, Ljubinka V., "The antimicrobial efficiency of silver activated sorbents" in Applied Surface Science, 357 (2015):819-831,
https://doi.org/10.1016/j.apsusc.2015.09.032 . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2511
AB  - Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at steps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution
EP  - 596
SP  - 589
VL  - 88
DO  - 10.1016/j.electacta.2012.10.128
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2013",
abstract = "Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at steps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution",
pages = "596-589",
volume = "88",
doi = "10.1016/j.electacta.2012.10.128"
}

Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2013). Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 88, 589-596.
https://doi.org/10.1016/j.electacta.2012.10.128

Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution. in Electrochimica Acta. 2013;88:589-596.
doi:10.1016/j.electacta.2012.10.128 .

Smiljanić, Milutin Lj., Srejić, Irina, Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution" in Electrochimica Acta, 88 (2013):589-596,
https://doi.org/10.1016/j.electacta.2012.10.128 . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2535
AB  - Pronounced catalysis of hydrogen evolution reaction (HER) by rhodium nanoislands spontaneously deposited on Au(111) has been observed. Different Rh/Au(111) nanostructures were characterized ex situ by both height and phase imaging AFM. The most pronounced catalytic activity for HER in 0.5 M H2SO4 was obtained for 50% Rh coverage. This is ascribed to the suitable size of Rh nanoislands and to the electronic modification of Rh deposit by Au(111) substrate.
PB  - Elsevier Science Inc, New York
T2  - Electrochemistry Communications
T1  - Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands
EP  - 39
SP  - 37
VL  - 28
DO  - 10.1016/j.elecom.2012.12.009
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2013",
abstract = "Pronounced catalysis of hydrogen evolution reaction (HER) by rhodium nanoislands spontaneously deposited on Au(111) has been observed. Different Rh/Au(111) nanostructures were characterized ex situ by both height and phase imaging AFM. The most pronounced catalytic activity for HER in 0.5 M H2SO4 was obtained for 50% Rh coverage. This is ascribed to the suitable size of Rh nanoislands and to the electronic modification of Rh deposit by Au(111) substrate.",
publisher = "Elsevier Science Inc, New York",
journal = "Electrochemistry Communications",
title = "Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands",
pages = "39-37",
volume = "28",
doi = "10.1016/j.elecom.2012.12.009"
}

Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2013). Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands. in Electrochemistry Communications
Elsevier Science Inc, New York., 28, 37-39.
https://doi.org/10.1016/j.elecom.2012.12.009

Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands. in Electrochemistry Communications. 2013;28:37-39.
doi:10.1016/j.elecom.2012.12.009 .

Smiljanić, Milutin Lj., Srejić, Irina, Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands" in Electrochemistry Communications, 28 (2013):37-39,
https://doi.org/10.1016/j.elecom.2012.12.009 . .

TY  - JOUR
AU  - Nenadović, Miloš
AU  - Potočnik, Jelena
AU  - Ristic, M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5741
AB  - High density polyethylene (HDPE) has been modified by Ag+ and Au+ ion implantation with the energy of 60 and 200 keV, respectively. The doses of implanted silver and gold ions were as follows: 1 x 10(15), 5 x 10(15) and 1 x 10(16) ions/cm(2). The surface topography was observed using atomic force microscopy (AFM), while the surface composition changes were detected using phase imaging AFM. Phase analysis of AFM images shows that both physical and chemical changes occur on the surface of HDPE and that these changes depend on the nature of implanted ions and on the implantation dose. Silver ion implantation causes a higher degree of chemical changes, while the implantation of gold ions causes a higher degree of physical changes. Breakpoints were observed for the implantation doses of 0.6 x 10(15) and 4.4 x 10(15) ions/cm(2) for silver and gold ions, respectively. Physical changes are confirmed by the analysis of mean square roughness and power spectral density slopes as functions of the implantation dose. The position and half-width of peaks in histograms of phase AFM images confirmed the changes in surface composition.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy
EP  - 4248
IS  - 19-20
SP  - 4242
VL  - 206
DO  - 10.1016/j.surfcoat.2012.04.032
ER  - 

@article{
author = "Nenadović, Miloš and Potočnik, Jelena and Ristic, M. and Štrbac, Svetlana and Rakočević, Zlatko Lj.",
year = "2012",
abstract = "High density polyethylene (HDPE) has been modified by Ag+ and Au+ ion implantation with the energy of 60 and 200 keV, respectively. The doses of implanted silver and gold ions were as follows: 1 x 10(15), 5 x 10(15) and 1 x 10(16) ions/cm(2). The surface topography was observed using atomic force microscopy (AFM), while the surface composition changes were detected using phase imaging AFM. Phase analysis of AFM images shows that both physical and chemical changes occur on the surface of HDPE and that these changes depend on the nature of implanted ions and on the implantation dose. Silver ion implantation causes a higher degree of chemical changes, while the implantation of gold ions causes a higher degree of physical changes. Breakpoints were observed for the implantation doses of 0.6 x 10(15) and 4.4 x 10(15) ions/cm(2) for silver and gold ions, respectively. Physical changes are confirmed by the analysis of mean square roughness and power spectral density slopes as functions of the implantation dose. The position and half-width of peaks in histograms of phase AFM images confirmed the changes in surface composition.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy",
pages = "4248-4242",
number = "19-20",
volume = "206",
doi = "10.1016/j.surfcoat.2012.04.032"
}

Nenadović, M., Potočnik, J., Ristic, M., Štrbac, S.,& Rakočević, Z. Lj.. (2012). Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy. in Surface and Coatings Technology
Elsevier., 206(19-20), 4242-4248.
https://doi.org/10.1016/j.surfcoat.2012.04.032

Nenadović M, Potočnik J, Ristic M, Štrbac S, Rakočević ZL. Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy. in Surface and Coatings Technology. 2012;206(19-20):4242-4248.
doi:10.1016/j.surfcoat.2012.04.032 .

Nenadović, Miloš, Potočnik, Jelena, Ristic, M., Štrbac, Svetlana, Rakočević, Zlatko Lj., "Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy" in Surface and Coatings Technology, 206, no. 19-20 (2012):4242-4248,
https://doi.org/10.1016/j.surfcoat.2012.04.032 . .

TY  - JOUR
AU  - Srejić, Irina
AU  - Smiljanić, Milutin Lj.
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2212
AB  - Oxygen reduction reaction (ORR) was studied on polycrystalline gold, Au(poly), modified by nanosized palladium islands in 0.1 M HClO4 solution using rotating disc electrode technique. Paladium was spontaneously deposited from 1 mM PdSO4 center dot 2H(2)O + 0.5 M H2SO4 solution for various deposition times at a submonolayer coverage. Topography of obtained Pd/Au(poly) surfaces was observed by tapping mode atomic force microscopy (AFM), while chemical surface composition changes were detected by simultaneously performed phase AFM. Deposited Pd islands were nonuniform in size and randomly distributed over the gold substrate. Size and number of Pd islands increase with the increase of the deposition time, and consequently surface coverage increases too. Deposited Pd was also identified by the changes in cyclic voltammetry (CV) profiles from which an active surface area was estimated. Obtained Pd/Au(poly) surfaces have shown a significant catalytic activity towards oxygen reduction reaction which increases with the increase of Pd islands coverage. The initial potential of ORR was shifted positively, while reaction pathway changes from 2e-reduction on pure gold to 4e-reduction on Pd modified gold. Additionally, obtained Pd/Au(poly) surfaces have shown a significant activity towards hydrogen peroxide reduction (HPRR), which appear as an intermediate during ORR. This supports the assumption that ORR on Pd/Au(poly) occurs partly through 4e-series reduction pathway, the fraction of which increases with the increase of Pd coverage.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution
EP  - 146
SP  - 140
VL  - 64
DO  - 10.1016/j.electacta.2011.12.130
ER  - 

@article{
author = "Srejić, Irina and Smiljanić, Milutin Lj. and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2012",
abstract = "Oxygen reduction reaction (ORR) was studied on polycrystalline gold, Au(poly), modified by nanosized palladium islands in 0.1 M HClO4 solution using rotating disc electrode technique. Paladium was spontaneously deposited from 1 mM PdSO4 center dot 2H(2)O + 0.5 M H2SO4 solution for various deposition times at a submonolayer coverage. Topography of obtained Pd/Au(poly) surfaces was observed by tapping mode atomic force microscopy (AFM), while chemical surface composition changes were detected by simultaneously performed phase AFM. Deposited Pd islands were nonuniform in size and randomly distributed over the gold substrate. Size and number of Pd islands increase with the increase of the deposition time, and consequently surface coverage increases too. Deposited Pd was also identified by the changes in cyclic voltammetry (CV) profiles from which an active surface area was estimated. Obtained Pd/Au(poly) surfaces have shown a significant catalytic activity towards oxygen reduction reaction which increases with the increase of Pd islands coverage. The initial potential of ORR was shifted positively, while reaction pathway changes from 2e-reduction on pure gold to 4e-reduction on Pd modified gold. Additionally, obtained Pd/Au(poly) surfaces have shown a significant activity towards hydrogen peroxide reduction (HPRR), which appear as an intermediate during ORR. This supports the assumption that ORR on Pd/Au(poly) occurs partly through 4e-series reduction pathway, the fraction of which increases with the increase of Pd coverage.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution",
pages = "146-140",
volume = "64",
doi = "10.1016/j.electacta.2011.12.130"
}

Srejić, I., Smiljanić, M. Lj., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2012). Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 64, 140-146.
https://doi.org/10.1016/j.electacta.2011.12.130

Srejić I, Smiljanić ML, Grgur B, Rakočević ZL, Štrbac S. Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution. in Electrochimica Acta. 2012;64:140-146.
doi:10.1016/j.electacta.2011.12.130 .

Srejić, Irina, Smiljanić, Milutin Lj., Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution" in Electrochimica Acta, 64 (2012):140-146,
https://doi.org/10.1016/j.electacta.2011.12.130 . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2149
AB  - Hydrogen evolution reaction was studied on Au(111) modified by palladium spontaneously deposited on the Au(111) surface from (1 mM PdSO4 center dot 2 H2O + 0.5 M H2SO4) solution at a submonolayer coverage. Number and size of Pd islands increased with the increase of the deposition time as observed by ex situ surface topography atomic force microscopy (AFM). The overall coverage of the underlying Au(111) surface by the deposited Pd islands was estimated from simultaneously acquired phase AFM images, which provided a clear contrast between different materials. The obtained Pd/Au(111) surfaces have shown a significant catalytic activity toward hydrogen evolution reaction in 0.5 M H2SO4 solution. This is discussed with respect to Pd islands size and coverage and to the influence of an electronic effect induced in Pd islands by the underlying Au(111) substrate.
PB  - Springer, New York
T2  - Electrocatalysis
T1  - Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands
EP  - 375
IS  - 3-4
SP  - 369
VL  - 3
DO  - 10.1007/s12678-012-0093-2
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2012",
abstract = "Hydrogen evolution reaction was studied on Au(111) modified by palladium spontaneously deposited on the Au(111) surface from (1 mM PdSO4 center dot 2 H2O + 0.5 M H2SO4) solution at a submonolayer coverage. Number and size of Pd islands increased with the increase of the deposition time as observed by ex situ surface topography atomic force microscopy (AFM). The overall coverage of the underlying Au(111) surface by the deposited Pd islands was estimated from simultaneously acquired phase AFM images, which provided a clear contrast between different materials. The obtained Pd/Au(111) surfaces have shown a significant catalytic activity toward hydrogen evolution reaction in 0.5 M H2SO4 solution. This is discussed with respect to Pd islands size and coverage and to the influence of an electronic effect induced in Pd islands by the underlying Au(111) substrate.",
publisher = "Springer, New York",
journal = "Electrocatalysis",
title = "Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands",
pages = "375-369",
number = "3-4",
volume = "3",
doi = "10.1007/s12678-012-0093-2"
}

Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2012). Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands. in Electrocatalysis
Springer, New York., 3(3-4), 369-375.
https://doi.org/10.1007/s12678-012-0093-2

Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands. in Electrocatalysis. 2012;3(3-4):369-375.
doi:10.1007/s12678-012-0093-2 .

Smiljanić, Milutin Lj., Srejić, Irina, Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands" in Electrocatalysis, 3, no. 3-4 (2012):369-375,
https://doi.org/10.1007/s12678-012-0093-2 . .

TY  - JOUR
AU  - Milosavljević, Nedeljko
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Filipović, Jovanka M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Kalagasidis Krušić, Melina
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1888
AB  - Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn2+ ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature.
PB  - Elsevier, Amsterdam
T2  - Journal of Hazardous Materials
T1  - Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid
EP  - 854
IS  - 2
SP  - 846
VL  - 192
DO  - 10.1016/j.jhazmat.2011.05.093
ER  - 

@article{
author = "Milosavljević, Nedeljko and Ristić, Mirjana and Perić-Grujić, Aleksandra and Filipović, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina",
year = "2011",
abstract = "Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn2+ ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Hazardous Materials",
title = "Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid",
pages = "854-846",
number = "2",
volume = "192",
doi = "10.1016/j.jhazmat.2011.05.093"
}

Milosavljević, N., Ristić, M., Perić-Grujić, A., Filipović, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2011). Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid. in Journal of Hazardous Materials
Elsevier, Amsterdam., 192(2), 846-854.
https://doi.org/10.1016/j.jhazmat.2011.05.093

Milosavljević N, Ristić M, Perić-Grujić A, Filipović JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid. in Journal of Hazardous Materials. 2011;192(2):846-854.
doi:10.1016/j.jhazmat.2011.05.093 .

Milosavljević, Nedeljko, Ristić, Mirjana, Perić-Grujić, Aleksandra, Filipović, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid" in Journal of Hazardous Materials, 192, no. 2 (2011):846-854,
https://doi.org/10.1016/j.jhazmat.2011.05.093 . .

TY  - JOUR
AU  - Milosavljević, Nedeljko
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Filipović, Jovanka M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Kalagasidis Krušić, Melina
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1860
AB  - A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.
PB  - Elsevier Science Bv, Amsterdam
T2  - Colloids and Surfaces A-Physicochemical and Engineering Aspects
T1  - Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study
EP  - 69
IS  - 1-3
SP  - 59
VL  - 388
DO  - 10.1016/j.colsurfa.2011.08.011
ER  - 

@article{
author = "Milosavljević, Nedeljko and Ristić, Mirjana and Perić-Grujić, Aleksandra and Filipović, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina",
year = "2011",
abstract = "A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Colloids and Surfaces A-Physicochemical and Engineering Aspects",
title = "Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study",
pages = "69-59",
number = "1-3",
volume = "388",
doi = "10.1016/j.colsurfa.2011.08.011"
}

Milosavljević, N., Ristić, M., Perić-Grujić, A., Filipović, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2011). Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study. in Colloids and Surfaces A-Physicochemical and Engineering Aspects
Elsevier Science Bv, Amsterdam., 388(1-3), 59-69.
https://doi.org/10.1016/j.colsurfa.2011.08.011

Milosavljević N, Ristić M, Perić-Grujić A, Filipović JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study. in Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2011;388(1-3):59-69.
doi:10.1016/j.colsurfa.2011.08.011 .

Milosavljević, Nedeljko, Ristić, Mirjana, Perić-Grujić, Aleksandra, Filipović, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study" in Colloids and Surfaces A-Physicochemical and Engineering Aspects, 388, no. 1-3 (2011):59-69,
https://doi.org/10.1016/j.colsurfa.2011.08.011 . .

TY  - JOUR
AU  - Štrbac, Svetlana
AU  - Nenadović, Miloš
AU  - Rajaković, Ljubinka V.
AU  - Rakočević, Zlatko Lj.
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5588
AB  - High density polyethylene (HDPE) has been modified by Ag+ ion implantation with the energy of 60 keV. The total amount of implanted silver ions was 1, 5 and 12 x 10(15) ions/cm(2). The surface topography was observed by atomic forcemicroscopy (AFM), while the surface composition changes were detected using phase imaging AFM. Surface topography changes were studied in detail using 3D surface parameters analyses. The average roughness decreased for the implanted HDPE indicating the flattening of the surface. Phase AFM images indicated the homogenization of the polyethylene during ion implantation, while histogram analyses confirmed the change in surface composition.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Chemical surface composition of the polyethylene implanted by Ag+ ions studied by phase imaging atomic force microscopy
EP  - 3899
IS  - 12
SP  - 3895
VL  - 256
DO  - 10.1016/j.apsusc.2010.01.046
ER  - 

@article{
author = "Štrbac, Svetlana and Nenadović, Miloš and Rajaković, Ljubinka V. and Rakočević, Zlatko Lj.",
year = "2010",
abstract = "High density polyethylene (HDPE) has been modified by Ag+ ion implantation with the energy of 60 keV. The total amount of implanted silver ions was 1, 5 and 12 x 10(15) ions/cm(2). The surface topography was observed by atomic forcemicroscopy (AFM), while the surface composition changes were detected using phase imaging AFM. Surface topography changes were studied in detail using 3D surface parameters analyses. The average roughness decreased for the implanted HDPE indicating the flattening of the surface. Phase AFM images indicated the homogenization of the polyethylene during ion implantation, while histogram analyses confirmed the change in surface composition.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Chemical surface composition of the polyethylene implanted by Ag+ ions studied by phase imaging atomic force microscopy",
pages = "3899-3895",
number = "12",
volume = "256",
doi = "10.1016/j.apsusc.2010.01.046"
}

Štrbac, S., Nenadović, M., Rajaković, L. V.,& Rakočević, Z. Lj.. (2010). Chemical surface composition of the polyethylene implanted by Ag+ ions studied by phase imaging atomic force microscopy. in Applied Surface Science
Elsevier., 256(12), 3895-3899.
https://doi.org/10.1016/j.apsusc.2010.01.046

Štrbac S, Nenadović M, Rajaković LV, Rakočević ZL. Chemical surface composition of the polyethylene implanted by Ag+ ions studied by phase imaging atomic force microscopy. in Applied Surface Science. 2010;256(12):3895-3899.
doi:10.1016/j.apsusc.2010.01.046 .

Štrbac, Svetlana, Nenadović, Miloš, Rajaković, Ljubinka V., Rakočević, Zlatko Lj., "Chemical surface composition of the polyethylene implanted by Ag+ ions studied by phase imaging atomic force microscopy" in Applied Surface Science, 256, no. 12 (2010):3895-3899,
https://doi.org/10.1016/j.apsusc.2010.01.046 . .

TY  - JOUR
AU  - Milosavljević, Nedeljko
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Filipović, Jovanka M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Kalagasidis Krušić, Melina
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1716
AB  - A hydrogel has been synthesized by ionic crosslinking of chitosan (Ch) with itaconic acid (IA), followed by a free radical polymerization and crosslinking of Ch/IA network by adding methacrylic acid and the crosslinker. The resulting material (Ch/IA/MAA hydrogel) was characterized by spectral (Fourier transform infrared (FTIR)), thermal (thermogravimetric analysis (TGA)) and structural (SEM/EDX and atomic force microscopy (AFM)) analyses. The prepared hydrogel was investigated as potential adsorbent for removal of Cd2+ ions from aqueous solution. The effect of various physico-chemical parameters such as pH, adsorbent dosage, adsorbate concentration and contact time was studied in batch experiments. The results of spectral analyses of Cd-loaded hydrogel have shown that active functional groups are -NH2, -OH and -COOH. SEM/EDX analysis and AFM surface topography and phase images indicated that apart from the adsorption on the surface of the hydrogel, sorption takes place in the bulk, as well. The experimental kinetic and equilibrium data were better fitted by pseudo-second order kinetic model and Langmuir adsorption isotherm. The parameters obtained in thermodynamic studies showed that the adsorption of Cd2+ on Ch/IA/MAA hydrogel was spontaneous and exothermic in nature. Desorption studies were carried out using acid leaching (HNO3) and it has been shown that the regenerated hydrogel can be reused three times without any loss of adsorption capacity. The maximum adsorption of 285.7 mg/g has been obtained at pH 5.5 and the results of adsorption/desorption experiments implies that the Ch/IA/MAA hydrogel may be used as efficient sorbent for removal of Cd2+ ions from aqueous solution.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution
EP  - 562
IS  - 2
SP  - 554
VL  - 165
DO  - 10.1016/j.cej.2010.09.072
ER  - 

@article{
author = "Milosavljević, Nedeljko and Ristić, Mirjana and Perić-Grujić, Aleksandra and Filipović, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina",
year = "2010",
abstract = "A hydrogel has been synthesized by ionic crosslinking of chitosan (Ch) with itaconic acid (IA), followed by a free radical polymerization and crosslinking of Ch/IA network by adding methacrylic acid and the crosslinker. The resulting material (Ch/IA/MAA hydrogel) was characterized by spectral (Fourier transform infrared (FTIR)), thermal (thermogravimetric analysis (TGA)) and structural (SEM/EDX and atomic force microscopy (AFM)) analyses. The prepared hydrogel was investigated as potential adsorbent for removal of Cd2+ ions from aqueous solution. The effect of various physico-chemical parameters such as pH, adsorbent dosage, adsorbate concentration and contact time was studied in batch experiments. The results of spectral analyses of Cd-loaded hydrogel have shown that active functional groups are -NH2, -OH and -COOH. SEM/EDX analysis and AFM surface topography and phase images indicated that apart from the adsorption on the surface of the hydrogel, sorption takes place in the bulk, as well. The experimental kinetic and equilibrium data were better fitted by pseudo-second order kinetic model and Langmuir adsorption isotherm. The parameters obtained in thermodynamic studies showed that the adsorption of Cd2+ on Ch/IA/MAA hydrogel was spontaneous and exothermic in nature. Desorption studies were carried out using acid leaching (HNO3) and it has been shown that the regenerated hydrogel can be reused three times without any loss of adsorption capacity. The maximum adsorption of 285.7 mg/g has been obtained at pH 5.5 and the results of adsorption/desorption experiments implies that the Ch/IA/MAA hydrogel may be used as efficient sorbent for removal of Cd2+ ions from aqueous solution.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution",
pages = "562-554",
number = "2",
volume = "165",
doi = "10.1016/j.cej.2010.09.072"
}

Milosavljević, N., Ristić, M., Perić-Grujić, A., Filipović, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2010). Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 165(2), 554-562.
https://doi.org/10.1016/j.cej.2010.09.072

Milosavljević N, Ristić M, Perić-Grujić A, Filipović JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution. in Chemical Engineering Journal. 2010;165(2):554-562.
doi:10.1016/j.cej.2010.09.072 .

Milosavljević, Nedeljko, Ristić, Mirjana, Perić-Grujić, Aleksandra, Filipović, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution" in Chemical Engineering Journal, 165, no. 2 (2010):554-562,
https://doi.org/10.1016/j.cej.2010.09.072 . .

TY  - JOUR
AU  - Marinović, Vedrana M.
AU  - Marinović, Sanja
AU  - Jovanović, M.
AU  - Jovanovic, J.
AU  - Štrbac, Svetlana
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5619
AB  - The electrochemical reduction of 2,4,6-trinitrotoluene (TNT) was investigated by cyclic voltammetry on a platinum electrode in aqueous sodium chloride solutions with acetonitrile containing different concentrations of TNT. The obtained cyclic voltammograms showed three distinct reduction peaks in the potential range of -0.45 to -0.8 V (vs. an Ag/AgCl (3M KCl) reference electrode), which refer to the multi-step process of TNT reduction. The calibration curves of the dependence of the first peak current on the TNT concentration were linear in the ranges 4.4-638.4 mu M and 0.11-4.40 mu M for two different scan rates, 200 my s(-1) and 20 mV s(-1), respectively. The detection limit was 0.11 mu M. Acetonitrile chemisorption on Pt surface took place and caused thus modified platinum electrode to exhibit an electrochemically stabile behaviour. Hence, a very high reproducibility over a prolonged time and voltammetric cycling was provided for using a Pt wire that is easy to handle as a suitable material for TNT sensing. Additionally, it was confirmed by testing the acetonitrile modified Pt wire for TNT detection in river water.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile
EP  - 7
IS  - 1
SP  - 1
VL  - 648
DO  - 10.1016/j.jelechem.2010.07.008
ER  - 

@article{
author = "Marinović, Vedrana M. and Marinović, Sanja and Jovanović, M. and Jovanovic, J. and Štrbac, Svetlana",
year = "2010",
abstract = "The electrochemical reduction of 2,4,6-trinitrotoluene (TNT) was investigated by cyclic voltammetry on a platinum electrode in aqueous sodium chloride solutions with acetonitrile containing different concentrations of TNT. The obtained cyclic voltammograms showed three distinct reduction peaks in the potential range of -0.45 to -0.8 V (vs. an Ag/AgCl (3M KCl) reference electrode), which refer to the multi-step process of TNT reduction. The calibration curves of the dependence of the first peak current on the TNT concentration were linear in the ranges 4.4-638.4 mu M and 0.11-4.40 mu M for two different scan rates, 200 my s(-1) and 20 mV s(-1), respectively. The detection limit was 0.11 mu M. Acetonitrile chemisorption on Pt surface took place and caused thus modified platinum electrode to exhibit an electrochemically stabile behaviour. Hence, a very high reproducibility over a prolonged time and voltammetric cycling was provided for using a Pt wire that is easy to handle as a suitable material for TNT sensing. Additionally, it was confirmed by testing the acetonitrile modified Pt wire for TNT detection in river water.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile",
pages = "7-1",
number = "1",
volume = "648",
doi = "10.1016/j.jelechem.2010.07.008"
}

Marinović, V. M., Marinović, S., Jovanović, M., Jovanovic, J.,& Štrbac, S.. (2010). The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile. in Journal of Electroanalytical Chemistry
Elsevier., 648(1), 1-7.
https://doi.org/10.1016/j.jelechem.2010.07.008

Marinović VM, Marinović S, Jovanović M, Jovanovic J, Štrbac S. The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile. in Journal of Electroanalytical Chemistry. 2010;648(1):1-7.
doi:10.1016/j.jelechem.2010.07.008 .

Marinović, Vedrana M., Marinović, Sanja, Jovanović, M., Jovanovic, J., Štrbac, Svetlana, "The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile" in Journal of Electroanalytical Chemistry, 648, no. 1 (2010):1-7,
https://doi.org/10.1016/j.jelechem.2010.07.008 . .