TY  - JOUR
AU  - Barbieriková, Zuzana
AU  - Lončarević, Davor
AU  - Papan, Jelena
AU  - Vukoje, Ivana
AU  - Stoiljković, Milovan
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan M.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3795
AB  - The efficiency of titanate-nanotubes-based photocatalysts towards hydrogen production was studied in the presence of the sacrificial agent, 2-propanol. The highest hydrogen production rate (~120 lmol h 1 g 1 ) was observed over surface-modified titanate nanotubes by 5-amino salicylic acid decorated with nanometer-sized silver nanoparticles. The X-ray diffraction analysis, transmission electron microscopy, nitrogen adsorption–desorption isotherms, and diffuse reflection spectroscopy were applied to characterize the prepared photocatalytic materials. The better photocatalytic performance of inorganic–organic hybrid materials in comparison to the pristine titanate nanotubes is a consequence of their improved light-harvesting ability due to the formation of interfacial charge transfer (ICT) complex, as well as the presence of metallic silver nanoparticles that suppress the recombination of photo-generated charge carriers. The spin trapping EPR experiments under irradiation of prepared photocatalysts with either UV or visible light were used to monitor the appearance of hydroxyl radicals and superoxide radical anions. The generation of superoxide radical anions under visible light irradiation was detected for hybrid materials, but not for the pristine titanate nanotubes. These results are a consequence of enhanced promotion ofelectrons to the conduction band due to extended absorption in visible spectral range in hybrids and support the higher efficiency of hydrogen generation observed for surface-modified titanate nanotubes by 5-amino salicylic acid decorated with silver nanoparticles.
PB  - Elsevier B.V. and The Society of Powder Technology Japan
T2  - Advanced Powder Technology
T1  - Photocatalytic hydrogen evolution over surface-modified titanate nanotubes by 5-aminosalicylic acid decorated with silver nanoparticles
VL  - 31
IS  - 12
SP  - 4683
EP  - 4690
DO  - 10.1016/j.apt.2020.11.001
ER  - 

@article{
author = "Barbieriková, Zuzana and Lončarević, Davor and Papan, Jelena and Vukoje, Ivana and Stoiljković, Milovan and Ahrenkiel, Scott Phillip and Nedeljković, Jovan M.",
year = "2020",
abstract = "The efficiency of titanate-nanotubes-based photocatalysts towards hydrogen production was studied in the presence of the sacrificial agent, 2-propanol. The highest hydrogen production rate (~120 lmol h 1 g 1 ) was observed over surface-modified titanate nanotubes by 5-amino salicylic acid decorated with nanometer-sized silver nanoparticles. The X-ray diffraction analysis, transmission electron microscopy, nitrogen adsorption–desorption isotherms, and diffuse reflection spectroscopy were applied to characterize the prepared photocatalytic materials. The better photocatalytic performance of inorganic–organic hybrid materials in comparison to the pristine titanate nanotubes is a consequence of their improved light-harvesting ability due to the formation of interfacial charge transfer (ICT) complex, as well as the presence of metallic silver nanoparticles that suppress the recombination of photo-generated charge carriers. The spin trapping EPR experiments under irradiation of prepared photocatalysts with either UV or visible light were used to monitor the appearance of hydroxyl radicals and superoxide radical anions. The generation of superoxide radical anions under visible light irradiation was detected for hybrid materials, but not for the pristine titanate nanotubes. These results are a consequence of enhanced promotion ofelectrons to the conduction band due to extended absorption in visible spectral range in hybrids and support the higher efficiency of hydrogen generation observed for surface-modified titanate nanotubes by 5-amino salicylic acid decorated with silver nanoparticles.",
publisher = "Elsevier B.V. and The Society of Powder Technology Japan",
journal = "Advanced Powder Technology",
title = "Photocatalytic hydrogen evolution over surface-modified titanate nanotubes by 5-aminosalicylic acid decorated with silver nanoparticles",
volume = "31",
number = "12",
pages = "4683-4690",
doi = "10.1016/j.apt.2020.11.001"
}

Barbieriková, Z., Lončarević, D., Papan, J., Vukoje, I., Stoiljković, M., Ahrenkiel, S. P.,& Nedeljković, J. M.. (2020). Photocatalytic hydrogen evolution over surface-modified titanate nanotubes by 5-aminosalicylic acid decorated with silver nanoparticles. in Advanced Powder Technology
Elsevier B.V. and The Society of Powder Technology Japan., 31(12), 4683-4690.
https://doi.org/10.1016/j.apt.2020.11.001

Barbieriková Z, Lončarević D, Papan J, Vukoje I, Stoiljković M, Ahrenkiel SP, Nedeljković JM. Photocatalytic hydrogen evolution over surface-modified titanate nanotubes by 5-aminosalicylic acid decorated with silver nanoparticles. in Advanced Powder Technology. 2020;31(12):4683-4690.
doi:10.1016/j.apt.2020.11.001 .

Barbieriková, Zuzana, Lončarević, Davor, Papan, Jelena, Vukoje, Ivana, Stoiljković, Milovan, Ahrenkiel, Scott Phillip, Nedeljković, Jovan M., "Photocatalytic hydrogen evolution over surface-modified titanate nanotubes by 5-aminosalicylic acid decorated with silver nanoparticles" in Advanced Powder Technology, 31, no. 12 (2020):4683-4690,
https://doi.org/10.1016/j.apt.2020.11.001 . .

TY  - JOUR
AU  - Prekajski Đorđević, Marija
AU  - Vukoje, Ivana
AU  - Lazić, Vesna
AU  - Đorđević, Vesna
AU  - Sredojević, Dušan
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Belić, Milivoj
AU  - Nedeljković, Jovan M.
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3320
AB  - Surface modification of CeO2 nano-powder, synthesized by a self-propagating room temperature method with
salicylate-type ligands (salicylic acid and 5-aminosalicylic acid) as well as catecholate-type ligands (catechol,
3,4-dihydroxybenzoic acid, caffeic acid and 2,3-dihydroxy naphthalene), induces the appearance of absorption in
the visible spectral region due to the interfacial charge transfer (ICT) complex formation. Thorough characterization
involving transmission electron microscopy, XRD analysis, and nitrogen adsorption-desorption isotherms,
revealed that loosely agglomerated CeO2 particles of the size ranging from 2 to 4 nm have cubic fluorite structure
and specific surface area of 140 m2/g. The attachment of salicylate- and catecholate-type of ligands to the surface
of CeO2 powders leads to the formation of colored powders with tunable absorption in the visible spectral region.
The density functional theory calculations with properly design model systems were performed to estimate the
alignment of energy levels of various inorganic/organic hybrids. A reasonably good agreement between calculated
values and experimental data was found.
PB  - England : Elsevier
T2  - Materials Chemistry and Physics
T1  - Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study
VL  - 236
SP  - 121816
DO  - 10.1016/j.matchemphys.2019.121816
ER  - 

@article{
author = "Prekajski Đorđević, Marija and Vukoje, Ivana and Lazić, Vesna and Đorđević, Vesna and Sredojević, Dušan and Dostanić, Jasmina and Lončarević, Davor and Ahrenkiel, Scott Phillip and Belić, Milivoj and Nedeljković, Jovan M.",
year = "2019",
abstract = "Surface modification of CeO2 nano-powder, synthesized by a self-propagating room temperature method with
salicylate-type ligands (salicylic acid and 5-aminosalicylic acid) as well as catecholate-type ligands (catechol,
3,4-dihydroxybenzoic acid, caffeic acid and 2,3-dihydroxy naphthalene), induces the appearance of absorption in
the visible spectral region due to the interfacial charge transfer (ICT) complex formation. Thorough characterization
involving transmission electron microscopy, XRD analysis, and nitrogen adsorption-desorption isotherms,
revealed that loosely agglomerated CeO2 particles of the size ranging from 2 to 4 nm have cubic fluorite structure
and specific surface area of 140 m2/g. The attachment of salicylate- and catecholate-type of ligands to the surface
of CeO2 powders leads to the formation of colored powders with tunable absorption in the visible spectral region.
The density functional theory calculations with properly design model systems were performed to estimate the
alignment of energy levels of various inorganic/organic hybrids. A reasonably good agreement between calculated
values and experimental data was found.",
publisher = "England : Elsevier",
journal = "Materials Chemistry and Physics",
title = "Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study",
volume = "236",
pages = "121816",
doi = "10.1016/j.matchemphys.2019.121816"
}

Prekajski Đorđević, M., Vukoje, I., Lazić, V., Đorđević, V., Sredojević, D., Dostanić, J., Lončarević, D., Ahrenkiel, S. P., Belić, M.,& Nedeljković, J. M.. (2019). Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study. in Materials Chemistry and Physics
England : Elsevier., 236, 121816.
https://doi.org/10.1016/j.matchemphys.2019.121816

Prekajski Đorđević M, Vukoje I, Lazić V, Đorđević V, Sredojević D, Dostanić J, Lončarević D, Ahrenkiel SP, Belić M, Nedeljković JM. Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study. in Materials Chemistry and Physics. 2019;236:121816.
doi:10.1016/j.matchemphys.2019.121816 .

Prekajski Đorđević, Marija, Vukoje, Ivana, Lazić, Vesna, Đorđević, Vesna, Sredojević, Dušan, Dostanić, Jasmina, Lončarević, Davor, Ahrenkiel, Scott Phillip, Belić, Milivoj, Nedeljković, Jovan M., "Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study" in Materials Chemistry and Physics, 236 (2019):121816,
https://doi.org/10.1016/j.matchemphys.2019.121816 . .

TY  - JOUR
AU  - Lončarević, Davor
AU  - Vukoje, Ivana
AU  - Dostanić, Jasmina
AU  - Bjelajac, Andjelika
AU  - Đorđević, Vesna
AU  - Dimitrijević, Suzana I.
AU  - Nedeljković, Jovan M.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2228
AB  - The rod-like Ag2CO3 particles (2-4 3 0.3-0.6 mm, length 3 diameter) were synthesized in water by the precipitation reaction between AgNO3 and NaHCO3 in the presence of polyvinylpyrrolidone. The X-ray diffraction analysis revealed the co-existence of monoclinic and hexagonal phases of Ag2CO3, without presence of impurities. The band gap energy of Ag-2 CO3 was found to be 1.4 eV from the diffuse reflectance spectra. Photocatalytic ability of Ag2CO3 was tested using degradation reaction of the organic dye methylene blue over the wide range of concentrations, as well as under long run working conditions in repeated cycles. The photocatalytic mechanism was discussed in terms of the relative energetics of valence and conduction band. Antimicrobial efficiency of Ag-2 CO3 in dark was tested against Gram-negative bacteria E. coli. The Ag2CO3 dispersions in the concentration range 0.1-1.0 mg/mL ensured 100% reduction of bacteria cells. Time-dependent measurements revealed that reduction rates of bacteria cells vary in ascending order with the content of Ag2CO3. On the other hand, the observed reduction rates of bacteria cells do not depend on the concentration of coexisting free Ag+ ions (from 2 to 25 mg/L) present in Ag2CO3 dispersion.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Chemistryselect
T1  - Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods
VL  - 2
IS  - 10
SP  - 2931
EP  - 2938
DO  - 10.1002/slct.201700003
ER  - 

@article{
author = "Lončarević, Davor and Vukoje, Ivana and Dostanić, Jasmina and Bjelajac, Andjelika and Đorđević, Vesna and Dimitrijević, Suzana I. and Nedeljković, Jovan M.",
year = "2017",
abstract = "The rod-like Ag2CO3 particles (2-4 3 0.3-0.6 mm, length 3 diameter) were synthesized in water by the precipitation reaction between AgNO3 and NaHCO3 in the presence of polyvinylpyrrolidone. The X-ray diffraction analysis revealed the co-existence of monoclinic and hexagonal phases of Ag2CO3, without presence of impurities. The band gap energy of Ag-2 CO3 was found to be 1.4 eV from the diffuse reflectance spectra. Photocatalytic ability of Ag2CO3 was tested using degradation reaction of the organic dye methylene blue over the wide range of concentrations, as well as under long run working conditions in repeated cycles. The photocatalytic mechanism was discussed in terms of the relative energetics of valence and conduction band. Antimicrobial efficiency of Ag-2 CO3 in dark was tested against Gram-negative bacteria E. coli. The Ag2CO3 dispersions in the concentration range 0.1-1.0 mg/mL ensured 100% reduction of bacteria cells. Time-dependent measurements revealed that reduction rates of bacteria cells vary in ascending order with the content of Ag2CO3. On the other hand, the observed reduction rates of bacteria cells do not depend on the concentration of coexisting free Ag+ ions (from 2 to 25 mg/L) present in Ag2CO3 dispersion.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Chemistryselect",
title = "Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods",
volume = "2",
number = "10",
pages = "2931-2938",
doi = "10.1002/slct.201700003"
}

Lončarević, D., Vukoje, I., Dostanić, J., Bjelajac, A., Đorđević, V., Dimitrijević, S. I.,& Nedeljković, J. M.. (2017). Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods. in Chemistryselect
Wiley-V C H Verlag Gmbh, Weinheim., 2(10), 2931-2938.
https://doi.org/10.1002/slct.201700003

Lončarević D, Vukoje I, Dostanić J, Bjelajac A, Đorđević V, Dimitrijević SI, Nedeljković JM. Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods. in Chemistryselect. 2017;2(10):2931-2938.
doi:10.1002/slct.201700003 .

Lončarević, Davor, Vukoje, Ivana, Dostanić, Jasmina, Bjelajac, Andjelika, Đorđević, Vesna, Dimitrijević, Suzana I., Nedeljković, Jovan M., "Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods" in Chemistryselect, 2, no. 10 (2017):2931-2938,
https://doi.org/10.1002/slct.201700003 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis S.
AU  - Lončarević, Davor
AU  - Dimitrijević, Suzana I.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan M.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2240
AB  - Poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA) macroporous copolymer decorated with silver nanoparticles was prepared by a modification of poly(GMA-co-EGDMA) in the reaction with arginine, and consequent reduction of silver ions with amino groups. The mercury intrusion porosimetry, transmission electron microscopy, X-ray diffraction, UV-vis reflection spectroscopy, and inductively coupled plasma atomic emission measurements were used to characterize obtained composite. The coordination of silver nanoparticles to the poly(GMA-co-EGDMA) copolymer was studied using infrared spectroscopy. Time dependence and concentration dependence of the antimicrobial efficiency of composite were tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungus Candida albicans. The composite ensured maximum reduction of both bacteria, while the fungi reduction reached satisfactory 96.8%. Preliminary antimicrobial efficiency measurements using laboratory flow setup indicated potential applicability of composite for wastewater treatment.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support
VL  - 38
IS  - 6
SP  - 1206
EP  - 1214
DO  - 10.1002/pc.23684
ER  - 

@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis S. and Lončarević, Davor and Dimitrijević, Suzana I. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan M.",
year = "2017",
abstract = "Poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA) macroporous copolymer decorated with silver nanoparticles was prepared by a modification of poly(GMA-co-EGDMA) in the reaction with arginine, and consequent reduction of silver ions with amino groups. The mercury intrusion porosimetry, transmission electron microscopy, X-ray diffraction, UV-vis reflection spectroscopy, and inductively coupled plasma atomic emission measurements were used to characterize obtained composite. The coordination of silver nanoparticles to the poly(GMA-co-EGDMA) copolymer was studied using infrared spectroscopy. Time dependence and concentration dependence of the antimicrobial efficiency of composite were tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungus Candida albicans. The composite ensured maximum reduction of both bacteria, while the fungi reduction reached satisfactory 96.8%. Preliminary antimicrobial efficiency measurements using laboratory flow setup indicated potential applicability of composite for wastewater treatment.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support",
volume = "38",
number = "6",
pages = "1206-1214",
doi = "10.1002/pc.23684"
}

Vukoje, I. D., Džunuzović, E. S., Lončarević, D., Dimitrijević, S. I., Ahrenkiel, S. P.,& Nedeljković, J. M.. (2017). Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support. in Polymer Composites
Wiley, Hoboken., 38(6), 1206-1214.
https://doi.org/10.1002/pc.23684

Vukoje ID, Džunuzović ES, Lončarević D, Dimitrijević SI, Ahrenkiel SP, Nedeljković JM. Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support. in Polymer Composites. 2017;38(6):1206-1214.
doi:10.1002/pc.23684 .

Vukoje, Ivana D., Džunuzović, Enis S., Lončarević, Davor, Dimitrijević, Suzana I., Ahrenkiel, Scott Phillip, Nedeljković, Jovan M., "Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support" in Polymer Composites, 38, no. 6 (2017):1206-1214,
https://doi.org/10.1002/pc.23684 . .

TY  - JOUR
AU  - Vukoje, Ivana
AU  - Kovac, Tijana
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis S.
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan M.
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1845
AB  - The synthetic procedures for preparation of free-standing and attached to polymer support surface modified TiO2 nanoparticles (NPs) with absorption extended into the visible spectral region due to charge transfer complex formation were developed. The one-step synthesis of colloids consisting of surface-modified TiO2 NPs is based on the reaction between titanium(IV) isopropoxide (TTIP) and lauryl galatte in nonprotic organic solvents (tetrahydrofuran, xylol, chloroform). The poly(GMA-co-EGDMA) copolymer decorated with surface-modified TiO2 NPs was obtained in two steps. First, copolymer was functionalized with dopamine and then treated with TTIP in organic solvent at slightly elevated temperature. Thorough microstructural and optical characterization of free-standing and attached to polymer support surface-modified TiO2 NPs was performed involving transmission electron microscopy as well as absorption and reflection spectroscopy. Infrared spectroscopy was used to understand coordination of ligands to surface Ti atoms. Photoredox chemistry of surface-modified TiO2 NPs attached to the polymer support was tested. Enhanced photooxidative ability of composite was demonstrated by degradation of organic dye crystal violet under visible light illumination, i.e., using photons with energy smaller than 2.75 eV. On the other hand, photocatalytic hydrogen production was used to demonstrate photoreduction ability of surface modified TiO2 NPs attached to the polymer support.
PB  - American Chemical Society (ACS)
T2  - Journal of Physical Chemistry C
T1  - Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles
VL  - 120
IS  - 33
SP  - 18560
EP  - 18569
DO  - 10.1021/acs.jpcc.6b04293
ER  - 

@article{
author = "Vukoje, Ivana and Kovac, Tijana and Džunuzović, Jasna and Džunuzović, Enis S. and Lončarević, Davor and Ahrenkiel, Scott Phillip and Nedeljković, Jovan M.",
year = "2016",
abstract = "The synthetic procedures for preparation of free-standing and attached to polymer support surface modified TiO2 nanoparticles (NPs) with absorption extended into the visible spectral region due to charge transfer complex formation were developed. The one-step synthesis of colloids consisting of surface-modified TiO2 NPs is based on the reaction between titanium(IV) isopropoxide (TTIP) and lauryl galatte in nonprotic organic solvents (tetrahydrofuran, xylol, chloroform). The poly(GMA-co-EGDMA) copolymer decorated with surface-modified TiO2 NPs was obtained in two steps. First, copolymer was functionalized with dopamine and then treated with TTIP in organic solvent at slightly elevated temperature. Thorough microstructural and optical characterization of free-standing and attached to polymer support surface-modified TiO2 NPs was performed involving transmission electron microscopy as well as absorption and reflection spectroscopy. Infrared spectroscopy was used to understand coordination of ligands to surface Ti atoms. Photoredox chemistry of surface-modified TiO2 NPs attached to the polymer support was tested. Enhanced photooxidative ability of composite was demonstrated by degradation of organic dye crystal violet under visible light illumination, i.e., using photons with energy smaller than 2.75 eV. On the other hand, photocatalytic hydrogen production was used to demonstrate photoreduction ability of surface modified TiO2 NPs attached to the polymer support.",
publisher = "American Chemical Society (ACS)",
journal = "Journal of Physical Chemistry C",
title = "Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles",
volume = "120",
number = "33",
pages = "18560-18569",
doi = "10.1021/acs.jpcc.6b04293"
}

Vukoje, I., Kovac, T., Džunuzović, J., Džunuzović, E. S., Lončarević, D., Ahrenkiel, S. P.,& Nedeljković, J. M.. (2016). Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles. in Journal of Physical Chemistry C
American Chemical Society (ACS)., 120(33), 18560-18569.
https://doi.org/10.1021/acs.jpcc.6b04293

Vukoje I, Kovac T, Džunuzović J, Džunuzović ES, Lončarević D, Ahrenkiel SP, Nedeljković JM. Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles. in Journal of Physical Chemistry C. 2016;120(33):18560-18569.
doi:10.1021/acs.jpcc.6b04293 .

Vukoje, Ivana, Kovac, Tijana, Džunuzović, Jasna, Džunuzović, Enis S., Lončarević, Davor, Ahrenkiel, Scott Phillip, Nedeljković, Jovan M., "Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles" in Journal of Physical Chemistry C, 120, no. 33 (2016):18560-18569,
https://doi.org/10.1021/acs.jpcc.6b04293 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis S.
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan M.
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1531
AB  - Nanocomposites (NCs) with different content of silver nanoparticles (Ag NPs) embeded in polystyrene (PS) matrix were prepared by in situ bulk radical polymerization. The nearly monodisperse Ag NPs protected with oleylamine were synthesized via organic solvo-thermal method and further used as a filler. The as-prepared spherical Ag NPs with diameter of 7.0 +/- 1.5 nm were well dispersed in the PS matrix. The structural properties of the resulting Ag/PS NCs were characterized by transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy, while optical properties were characterized using optical absorption measurements. The gel permeation chromatography (GPC) measurements showed that the presence of Ag NPs stabilized with oleylamine has no influence on the molecular weight and polydispersity of the PS matrix. The influence of silver content on the thermal properties of Ag/PS NCs was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that resistance of PS to thermal degradation was improved upon incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than net PS because loosely packed oleylamine molecules at the interface caused the increase of free volume and chain segments mobility near the surface of Ag NPs.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Materials Research Bulletin
T1  - Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization
VL  - 49
SP  - 434
EP  - 439
DO  - 10.1016/j.materresbull.2013.09.029
ER  - 

@article{
author = "Vukoje, Ivana D. and Vodnik, Vesna and Džunuzović, Jasna and Džunuzović, Enis S. and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan M.",
year = "2014",
abstract = "Nanocomposites (NCs) with different content of silver nanoparticles (Ag NPs) embeded in polystyrene (PS) matrix were prepared by in situ bulk radical polymerization. The nearly monodisperse Ag NPs protected with oleylamine were synthesized via organic solvo-thermal method and further used as a filler. The as-prepared spherical Ag NPs with diameter of 7.0 +/- 1.5 nm were well dispersed in the PS matrix. The structural properties of the resulting Ag/PS NCs were characterized by transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy, while optical properties were characterized using optical absorption measurements. The gel permeation chromatography (GPC) measurements showed that the presence of Ag NPs stabilized with oleylamine has no influence on the molecular weight and polydispersity of the PS matrix. The influence of silver content on the thermal properties of Ag/PS NCs was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that resistance of PS to thermal degradation was improved upon incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than net PS because loosely packed oleylamine molecules at the interface caused the increase of free volume and chain segments mobility near the surface of Ag NPs.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Materials Research Bulletin",
title = "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization",
volume = "49",
pages = "434-439",
doi = "10.1016/j.materresbull.2013.09.029"
}

Vukoje, I. D., Vodnik, V., Džunuzović, J., Džunuzović, E. S., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J. M.. (2014). Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization. in Materials Research Bulletin
Oxford : Pergamon-Elsevier Science Ltd., 49, 434-439.
https://doi.org/10.1016/j.materresbull.2013.09.029

Vukoje ID, Vodnik V, Džunuzović J, Džunuzović ES, Marinović-Cincović M, Jeremić KB, Nedeljković JM. Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization. in Materials Research Bulletin. 2014;49:434-439.
doi:10.1016/j.materresbull.2013.09.029 .

Vukoje, Ivana D., Vodnik, Vesna, Džunuzović, Jasna, Džunuzović, Enis S., Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan M., "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization" in Materials Research Bulletin, 49 (2014):434-439,
https://doi.org/10.1016/j.materresbull.2013.09.029 . .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Bogdanović, Una
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6738
AB  - Nanocomposites (NCs) with different amount of silver nanoparticles (Ag NPs) embedded
in polystyrene (PS) matrix were prepared by in situ radical polymerization. In order to
achieve homogeneous distribution of Ag NPs in the PS matrix, the nearly monodisperse Ag
NPs (7.0 ± 1.5 nm) protected with oleylamine were first synthesized via organic solvothermal
method and further used as a filler. For this purpose, a simple colloidal method
for preparation of Ag NPs in organic solvent was developed. PS was selected as the
polymer matrix based on its optical transparency and high chemical resistance. The gel
permeation chromatography (GPC) measurements showed that the presence of Ag NPs
stabilized with oleylamine during the polymerization of styrene have no influence on the
molecular weight and polydispersity of the PS matrix. The structural properties of the
resulting Ag/PS NCs were characterized by transmission electron microscope and FTIR
spectroscopy. The influence of the presence of Ag NPs and their concentration on the
optical properties of PS matrix was investigated in details using UV-Vis spectroscopy. Since
the PS represents a nonabsorbing medium throughout the visible spectrum, the
improvement of the optical performances of polymer was achieved by incorporation of
the appropriate size Ag NPs with strong plasma resonance absorption.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
T1  - Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization
SP  - 158
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_cer_6738
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Džunuzović, Jasna and Džunuzović, Enis and Bogdanović, Una and Nedeljković, Jovan",
year = "2013",
abstract = "Nanocomposites (NCs) with different amount of silver nanoparticles (Ag NPs) embedded
in polystyrene (PS) matrix were prepared by in situ radical polymerization. In order to
achieve homogeneous distribution of Ag NPs in the PS matrix, the nearly monodisperse Ag
NPs (7.0 ± 1.5 nm) protected with oleylamine were first synthesized via organic solvothermal
method and further used as a filler. For this purpose, a simple colloidal method
for preparation of Ag NPs in organic solvent was developed. PS was selected as the
polymer matrix based on its optical transparency and high chemical resistance. The gel
permeation chromatography (GPC) measurements showed that the presence of Ag NPs
stabilized with oleylamine during the polymerization of styrene have no influence on the
molecular weight and polydispersity of the PS matrix. The structural properties of the
resulting Ag/PS NCs were characterized by transmission electron microscope and FTIR
spectroscopy. The influence of the presence of Ag NPs and their concentration on the
optical properties of PS matrix was investigated in details using UV-Vis spectroscopy. Since
the PS represents a nonabsorbing medium throughout the visible spectrum, the
improvement of the optical performances of polymer was achieved by incorporation of
the appropriate size Ag NPs with strong plasma resonance absorption.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract",
title = "Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization",
pages = "158-158",
url = "https://hdl.handle.net/21.15107/rcub_cer_6738"
}

Vukoje, I., Vodnik, V., Džunuzović, J., Džunuzović, E., Bogdanović, U.,& Nedeljković, J.. (2013). Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
Belgrade : Serbian Chemical Society., 158-158.
https://hdl.handle.net/21.15107/rcub_cer_6738

Vukoje I, Vodnik V, Džunuzović J, Džunuzović E, Bogdanović U, Nedeljković J. Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract. 2013;:158-158.
https://hdl.handle.net/21.15107/rcub_cer_6738 .

Vukoje, Ivana, Vodnik, Vesna, Džunuzović, Jasna, Džunuzović, Enis, Bogdanović, Una, Nedeljković, Jovan, "Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization" in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract (2013):158-158,
https://hdl.handle.net/21.15107/rcub_cer_6738 .

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Vukoje, Ivana
AU  - Džunuzović, Jasna
AU  - Stoiljković, Milovan
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6739
AB  - Combining the electrical, optical, and magnetic properties of polyaniline (PANI) with
excellent chemical and physical properties of gold nanoparticles (Au NPs) is an efficient
way to create novel functional nanomaterials with potential applications in biosensing and
therapy, energy conversion and storage. In the present work, we report polyaniline/gold
nanocomposite (PANI/Au) obtained by two-phase, water/toluene, interfacial chemical
reaction. The polymerization process occurs at the interface of the organic phase (with
aniline) and acidic water solution (with oxidant and Au NPs). Using this strategy, secondary
growth of PANI could be suppressed. Transmission and scanning electron microscopy
measurements were confirmed that PANI was formed as nanofibers decorated with 17 nm
Au NPs. Characterization of the samples performed with UV-Vis and FTIR spectroscopy
and XRD technique are used for description of the optical properties, interaction between
components and structure of PANI/Au system. The obtained results indicate that the
present synthetic route produces the PANI in conductive form (doped emeraldine salt
form) with specific electric behavior, which makes PANI/Au nanocomposite suitable
material for a wide range of applications.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
T1  - A simple two-phase route to polyaniline/gold nanocomposites
SP  - 148
EP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_cer_6739
ER  - 

@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Vukoje, Ivana and Džunuzović, Jasna and Stoiljković, Milovan and Nedeljković, Jovan",
year = "2013",
abstract = "Combining the electrical, optical, and magnetic properties of polyaniline (PANI) with
excellent chemical and physical properties of gold nanoparticles (Au NPs) is an efficient
way to create novel functional nanomaterials with potential applications in biosensing and
therapy, energy conversion and storage. In the present work, we report polyaniline/gold
nanocomposite (PANI/Au) obtained by two-phase, water/toluene, interfacial chemical
reaction. The polymerization process occurs at the interface of the organic phase (with
aniline) and acidic water solution (with oxidant and Au NPs). Using this strategy, secondary
growth of PANI could be suppressed. Transmission and scanning electron microscopy
measurements were confirmed that PANI was formed as nanofibers decorated with 17 nm
Au NPs. Characterization of the samples performed with UV-Vis and FTIR spectroscopy
and XRD technique are used for description of the optical properties, interaction between
components and structure of PANI/Au system. The obtained results indicate that the
present synthetic route produces the PANI in conductive form (doped emeraldine salt
form) with specific electric behavior, which makes PANI/Au nanocomposite suitable
material for a wide range of applications.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract",
title = "A simple two-phase route to polyaniline/gold nanocomposites",
pages = "148-148",
url = "https://hdl.handle.net/21.15107/rcub_cer_6739"
}

Bogdanović, U., Vodnik, V., Vukoje, I., Džunuzović, J., Stoiljković, M.,& Nedeljković, J.. (2013). A simple two-phase route to polyaniline/gold nanocomposites. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
Belgrade : Serbian Chemical Society., 148-148.
https://hdl.handle.net/21.15107/rcub_cer_6739

Bogdanović U, Vodnik V, Vukoje I, Džunuzović J, Stoiljković M, Nedeljković J. A simple two-phase route to polyaniline/gold nanocomposites. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract. 2013;:148-148.
https://hdl.handle.net/21.15107/rcub_cer_6739 .

Bogdanović, Una, Vodnik, Vesna, Vukoje, Ivana, Džunuzović, Jasna, Stoiljković, Milovan, Nedeljković, Jovan, "A simple two-phase route to polyaniline/gold nanocomposites" in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract (2013):148-148,
https://hdl.handle.net/21.15107/rcub_cer_6739 .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6751
AB  - Nanocomposites (NCs) comprised of metal nanoparticles (NPs) embedded in polymer
matrices usually exhibit a simple combination of the physical properties of the polymer,
along with the specific optical or electrical characteristics associated with the NPs.
However, novel behavior can arise thanks to synergistic effects between the NPs and
polymer matrix. The present work represents the continuation of our study on the
interaction between silver nanoparticles (Ag NPs) and polystyrene (PS) matrix that govern
the properties of polymer. Namely, in order to achieve homogeneous distribution of Ag
NPs in the PS matrix, the in situ bulk radical polymerization of styrene was performed in
the presence of monodisperse surface modified Ag NPs. The influence of the presence of
Ag NPs and their concentration on the glass transition temperature and thermal stability
of PS matrix was investigated in details using differential scanning calorimetry (DSC) and
thermogravimetric analysis (TGA) performed in argon and air atmosphere. The results
indicated that thermal and thermo-oxidative stability of PS were improved upon
incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than
neat PS because loosely packed oleylamine molecules at the interface caused the increase
of free volume and chain segments mobility near the surface of Ag NPs.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries (ICOSEC 8), June 27-29, 2013, Belgrade, Serbia
T1  - The effect of silver nanofillers on the thermal properties of polystyrene
SP  - 138
EP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_cer_6751
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Džunuzović, Jasna and Džunuzović, Enis",
year = "2013",
abstract = "Nanocomposites (NCs) comprised of metal nanoparticles (NPs) embedded in polymer
matrices usually exhibit a simple combination of the physical properties of the polymer,
along with the specific optical or electrical characteristics associated with the NPs.
However, novel behavior can arise thanks to synergistic effects between the NPs and
polymer matrix. The present work represents the continuation of our study on the
interaction between silver nanoparticles (Ag NPs) and polystyrene (PS) matrix that govern
the properties of polymer. Namely, in order to achieve homogeneous distribution of Ag
NPs in the PS matrix, the in situ bulk radical polymerization of styrene was performed in
the presence of monodisperse surface modified Ag NPs. The influence of the presence of
Ag NPs and their concentration on the glass transition temperature and thermal stability
of PS matrix was investigated in details using differential scanning calorimetry (DSC) and
thermogravimetric analysis (TGA) performed in argon and air atmosphere. The results
indicated that thermal and thermo-oxidative stability of PS were improved upon
incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than
neat PS because loosely packed oleylamine molecules at the interface caused the increase
of free volume and chain segments mobility near the surface of Ag NPs.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries (ICOSEC 8), June 27-29, 2013, Belgrade, Serbia",
title = "The effect of silver nanofillers on the thermal properties of polystyrene",
pages = "138-138",
url = "https://hdl.handle.net/21.15107/rcub_cer_6751"
}

Vukoje, I., Vodnik, V., Džunuzović, J.,& Džunuzović, E.. (2013). The effect of silver nanofillers on the thermal properties of polystyrene. in 8th International Conference of the Chemical Societies of the South-East European Countries (ICOSEC 8), June 27-29, 2013, Belgrade, Serbia
Belgrade : Serbian Chemical Society., 138-138.
https://hdl.handle.net/21.15107/rcub_cer_6751

Vukoje I, Vodnik V, Džunuzović J, Džunuzović E. The effect of silver nanofillers on the thermal properties of polystyrene. in 8th International Conference of the Chemical Societies of the South-East European Countries (ICOSEC 8), June 27-29, 2013, Belgrade, Serbia. 2013;:138-138.
https://hdl.handle.net/21.15107/rcub_cer_6751 .

Vukoje, Ivana, Vodnik, Vesna, Džunuzović, Jasna, Džunuzović, Enis, "The effect of silver nanofillers on the thermal properties of polystyrene" in 8th International Conference of the Chemical Societies of the South-East European Countries (ICOSEC 8), June 27-29, 2013, Belgrade, Serbia (2013):138-138,
https://hdl.handle.net/21.15107/rcub_cer_6751 .

TY  - JOUR
AU  - Vodnik, Vesna
AU  - Bozanic, Dusan K.
AU  - Džunuzović, Jasna
AU  - Vukoje, Ivana
AU  - Nedeljković, Jovan M.
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1018
AB  - Nanocomposites consisted of different quantities of silver (Ag) nanoparticles incorporated in a polystyrene (PS) matrix have been prepared by solution mixing method. Transmission electron microscopy was applied to determine the size distribution of the Ag nanoparticles, while the morphology of fractured surfaces of pure PS and Ag/PS nanocomposites was examined by scanning electron microscopy. Absorption spectra of nanocomposites were compared with theoretically calculated spectra based on the Maxwell-Garnett effective medium theory. The influence of Ag content on thermal properties of Ag/PS nanocomposites was investigated by thermogravimetric analysis and differential scanning calorimetry. Thermal and thermo-oxidative stability of the host polymer were improved by introduction of silver nanoparticles. The glass transition temperature of the prepared Ag/PS nanocomposites was lower in comparison with the neat PS and decreased with the increase of the Ag content due to the very weak interfacial interaction between Ag nanoparticles and polymer matrix. POLYM. COMPOS., 2012.
PB  - Wiley-Blackwell, Hoboken
T2  - Polymer Composites
T1  - Silver/polystyrene nanocomposites: Optical and thermal properties
VL  - 33
IS  - 5
SP  - 782
EP  - 788
DO  - 10.1002/pc.22207
ER  - 

@article{
author = "Vodnik, Vesna and Bozanic, Dusan K. and Džunuzović, Jasna and Vukoje, Ivana and Nedeljković, Jovan M.",
year = "2012",
abstract = "Nanocomposites consisted of different quantities of silver (Ag) nanoparticles incorporated in a polystyrene (PS) matrix have been prepared by solution mixing method. Transmission electron microscopy was applied to determine the size distribution of the Ag nanoparticles, while the morphology of fractured surfaces of pure PS and Ag/PS nanocomposites was examined by scanning electron microscopy. Absorption spectra of nanocomposites were compared with theoretically calculated spectra based on the Maxwell-Garnett effective medium theory. The influence of Ag content on thermal properties of Ag/PS nanocomposites was investigated by thermogravimetric analysis and differential scanning calorimetry. Thermal and thermo-oxidative stability of the host polymer were improved by introduction of silver nanoparticles. The glass transition temperature of the prepared Ag/PS nanocomposites was lower in comparison with the neat PS and decreased with the increase of the Ag content due to the very weak interfacial interaction between Ag nanoparticles and polymer matrix. POLYM. COMPOS., 2012.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Polymer Composites",
title = "Silver/polystyrene nanocomposites: Optical and thermal properties",
volume = "33",
number = "5",
pages = "782-788",
doi = "10.1002/pc.22207"
}

Vodnik, V., Bozanic, D. K., Džunuzović, J., Vukoje, I.,& Nedeljković, J. M.. (2012). Silver/polystyrene nanocomposites: Optical and thermal properties. in Polymer Composites
Wiley-Blackwell, Hoboken., 33(5), 782-788.
https://doi.org/10.1002/pc.22207

Vodnik V, Bozanic DK, Džunuzović J, Vukoje I, Nedeljković JM. Silver/polystyrene nanocomposites: Optical and thermal properties. in Polymer Composites. 2012;33(5):782-788.
doi:10.1002/pc.22207 .

Vodnik, Vesna, Bozanic, Dusan K., Džunuzović, Jasna, Vukoje, Ivana, Nedeljković, Jovan M., "Silver/polystyrene nanocomposites: Optical and thermal properties" in Polymer Composites, 33, no. 5 (2012):782-788,
https://doi.org/10.1002/pc.22207 . .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Bogdanović, Una
AU  - Džunuzović, Jasna
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6752
AB  - Nanocomposites containing metal nanoparticles, dispersed in electrically conducting
polymers such as polyaniline, show enhanced sensing, electrical and catalytic properties
as compared with those of neat polymer. These composites have generated increasing
interest as advanced technological materials due to synergistic effects of both
components. Here, we report silver/polyaniline (Ag/PANI) nanocomposites obtained
through a two-phase water/toluene interfacial reaction. As prepared silver nanoparticles
in toluene with oleylamine as a reducing and stabilizing agent, were used as nucleation
centers for the polymerization of aniline. Once the polymerization occurs at the
interface of the organic (containing the aniline and the silver nanoparticles) and aqueous
(containing the oxidizing ammonium persulfate agent) phase, the polymer grows around
the silver nanoparticles and forming the nanocomposite structure. The formation of
Ag/PANI nanocomposite was characterized by UV–Vis and FTIR spectroscopy, and
transmission electron microscopy. In contrast to pure PANI, the absorption spectrum of
Ag/PANI nanocomposite showed additional strong band assigned to surface plasmon
resonance absorption of the electrons in the conducting silver bands.
PB  - Belgrade : Agencija FORMAT
C3  - The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
T1  - Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites
SP  - 125
EP  - 125
UR  - https://hdl.handle.net/21.15107/rcub_cer_6752
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Bogdanović, Una and Džunuzović, Jasna and Nedeljković, Jovan",
year = "2012",
abstract = "Nanocomposites containing metal nanoparticles, dispersed in electrically conducting
polymers such as polyaniline, show enhanced sensing, electrical and catalytic properties
as compared with those of neat polymer. These composites have generated increasing
interest as advanced technological materials due to synergistic effects of both
components. Here, we report silver/polyaniline (Ag/PANI) nanocomposites obtained
through a two-phase water/toluene interfacial reaction. As prepared silver nanoparticles
in toluene with oleylamine as a reducing and stabilizing agent, were used as nucleation
centers for the polymerization of aniline. Once the polymerization occurs at the
interface of the organic (containing the aniline and the silver nanoparticles) and aqueous
(containing the oxidizing ammonium persulfate agent) phase, the polymer grows around
the silver nanoparticles and forming the nanocomposite structure. The formation of
Ag/PANI nanocomposite was characterized by UV–Vis and FTIR spectroscopy, and
transmission electron microscopy. In contrast to pure PANI, the absorption spectrum of
Ag/PANI nanocomposite showed additional strong band assigned to surface plasmon
resonance absorption of the electrons in the conducting silver bands.",
publisher = "Belgrade : Agencija FORMAT",
journal = "The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia",
title = "Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites",
pages = "125-125",
url = "https://hdl.handle.net/21.15107/rcub_cer_6752"
}

Vukoje, I., Vodnik, V., Bogdanović, U., Džunuzović, J.,& Nedeljković, J.. (2012). Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
Belgrade : Agencija FORMAT., 125-125.
https://hdl.handle.net/21.15107/rcub_cer_6752

Vukoje I, Vodnik V, Bogdanović U, Džunuzović J, Nedeljković J. Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia. 2012;:125-125.
https://hdl.handle.net/21.15107/rcub_cer_6752 .

Vukoje, Ivana, Vodnik, Vesna, Bogdanović, Una, Džunuzović, Jasna, Nedeljković, Jovan, "Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites" in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia (2012):125-125,
https://hdl.handle.net/21.15107/rcub_cer_6752 .

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Vukoje, Ivana
AU  - Džunuzović, Jasna
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6753
AB  - Nanocomposites based on conducting polymer and metal nanoparticles are very
advantageous nanostructures due to their unique optical and conductive properties,
offering the opportunity for many nanotechnological applications. In the present work,
we report polyaniline – gold nanocomposite (PANI/Au) obtained by “in situ” chemical
synthesis route. The chloroaurate ions (AuCl4
-) are used as an oxidant for the oxidative
polymerization of aniline leading to the formation of gold nanoparticles together with
polyaniline. Furthermore, the gold nanoparticles act as nucleation sites for the oxidative
formation of PANI, encapsulating the metal in the form of a polymer/metal composite.
Characterization of the samples, performed with UV-Vis and FTIR spectroscopy and
XRD technique are used for description of the optical and structural properties of
PANI/Au nanocomposite. Results from the FTIR spectra of the composite material are
consistent with PANI produced using only ammonium persulfate as the oxidant. On the
other hand, UV-Vis results indicate that the optical properties can be tailored from
PANI.
PB  - Belgrade : Agencija FORMAT
C3  - The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
T1  - Optical and structural characterization of polyaniline-gold nanocomposite
SP  - 98
EP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_cer_6753
ER  - 

@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Vukoje, Ivana and Džunuzović, Jasna and Nedeljković, Jovan",
year = "2012",
abstract = "Nanocomposites based on conducting polymer and metal nanoparticles are very
advantageous nanostructures due to their unique optical and conductive properties,
offering the opportunity for many nanotechnological applications. In the present work,
we report polyaniline – gold nanocomposite (PANI/Au) obtained by “in situ” chemical
synthesis route. The chloroaurate ions (AuCl4
-) are used as an oxidant for the oxidative
polymerization of aniline leading to the formation of gold nanoparticles together with
polyaniline. Furthermore, the gold nanoparticles act as nucleation sites for the oxidative
formation of PANI, encapsulating the metal in the form of a polymer/metal composite.
Characterization of the samples, performed with UV-Vis and FTIR spectroscopy and
XRD technique are used for description of the optical and structural properties of
PANI/Au nanocomposite. Results from the FTIR spectra of the composite material are
consistent with PANI produced using only ammonium persulfate as the oxidant. On the
other hand, UV-Vis results indicate that the optical properties can be tailored from
PANI.",
publisher = "Belgrade : Agencija FORMAT",
journal = "The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia",
title = "Optical and structural characterization of polyaniline-gold nanocomposite",
pages = "98-98",
url = "https://hdl.handle.net/21.15107/rcub_cer_6753"
}

Bogdanović, U., Vodnik, V., Vukoje, I., Džunuzović, J.,& Nedeljković, J.. (2012). Optical and structural characterization of polyaniline-gold nanocomposite. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
Belgrade : Agencija FORMAT., 98-98.
https://hdl.handle.net/21.15107/rcub_cer_6753

Bogdanović U, Vodnik V, Vukoje I, Džunuzović J, Nedeljković J. Optical and structural characterization of polyaniline-gold nanocomposite. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia. 2012;:98-98.
https://hdl.handle.net/21.15107/rcub_cer_6753 .

Bogdanović, Una, Vodnik, Vesna, Vukoje, Ivana, Džunuzović, Jasna, Nedeljković, Jovan, "Optical and structural characterization of polyaniline-gold nanocomposite" in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia (2012):98-98,
https://hdl.handle.net/21.15107/rcub_cer_6753 .

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Vukoje, Ivana
AU  - Džunuzović, Jasna
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6754
AB  - In this report, we describe a simple and rapid chemical reduction method with inert gas
protection, for preparing stable copper nanoparticle with average particle size of 9.4 nm.
In our synthesis route, ascorbic acid is used as antioxidant to effectively prevent the
general oxidation process during copper nuclei formation. As-prepared copper
nanoparticles were transferred from water phase to different organic solvents (hexane,
octane, cyclohexane, and toluene) using oleylamine as a phase transfer agent. This
should allow dispersion of the particles in both polar and nonpolar solvents and avoid
particle aggregation during the solvent exchange process. Transmission electron
microscopy and UV–Vis spectroscopy contributed to the analysis of size and optical
properties of the copper nanoparticles in different media, respectively. The advantages
of such solvent exchange process can be found in the applications of metal particles as
catalysts for organic reactions in nonpolar solvents and in the study of the changes in
surface chemistry depending on the surrounding medium and on the adsorption of
different moieties.
PB  - Belgrade : Agencija FORMAT
C3  - The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
T1  - Synthesis and optical behavior of copper nanoparticles in different media
SP  - 97
EP  - 97
UR  - https://hdl.handle.net/21.15107/rcub_cer_6754
ER  - 

@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Vukoje, Ivana and Džunuzović, Jasna and Nedeljković, Jovan",
year = "2012",
abstract = "In this report, we describe a simple and rapid chemical reduction method with inert gas
protection, for preparing stable copper nanoparticle with average particle size of 9.4 nm.
In our synthesis route, ascorbic acid is used as antioxidant to effectively prevent the
general oxidation process during copper nuclei formation. As-prepared copper
nanoparticles were transferred from water phase to different organic solvents (hexane,
octane, cyclohexane, and toluene) using oleylamine as a phase transfer agent. This
should allow dispersion of the particles in both polar and nonpolar solvents and avoid
particle aggregation during the solvent exchange process. Transmission electron
microscopy and UV–Vis spectroscopy contributed to the analysis of size and optical
properties of the copper nanoparticles in different media, respectively. The advantages
of such solvent exchange process can be found in the applications of metal particles as
catalysts for organic reactions in nonpolar solvents and in the study of the changes in
surface chemistry depending on the surrounding medium and on the adsorption of
different moieties.",
publisher = "Belgrade : Agencija FORMAT",
journal = "The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia",
title = "Synthesis and optical behavior of copper nanoparticles in different media",
pages = "97-97",
url = "https://hdl.handle.net/21.15107/rcub_cer_6754"
}

Bogdanović, U., Vodnik, V., Vukoje, I., Džunuzović, J.,& Nedeljković, J.. (2012). Synthesis and optical behavior of copper nanoparticles in different media. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
Belgrade : Agencija FORMAT., 97-97.
https://hdl.handle.net/21.15107/rcub_cer_6754

Bogdanović U, Vodnik V, Vukoje I, Džunuzović J, Nedeljković J. Synthesis and optical behavior of copper nanoparticles in different media. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia. 2012;:97-97.
https://hdl.handle.net/21.15107/rcub_cer_6754 .

Bogdanović, Una, Vodnik, Vesna, Vukoje, Ivana, Džunuzović, Jasna, Nedeljković, Jovan, "Synthesis and optical behavior of copper nanoparticles in different media" in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia (2012):97-97,
https://hdl.handle.net/21.15107/rcub_cer_6754 .

TY  - JOUR
AU  - Vukoje, Ivana
AU  - Božanić, Dušan
AU  - Džunuzović, Jasna
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1045
AB  - The aim of this study was to investigate and compare the changes in surface plasmon resonance (SPR) of silver (Ag) hydrosol and organosols obtained by experimental and theoretical approaches. Silver nanoparticles (Ag NPs) of 5±1.5 nm in diameter were prepared in water by reduction of silver nitrate with sodium borohydride. Nanoparticles were subsequently transferred into different organic solvents (chloroform, hexane, toluene, 1,2-di- chlorobenzene) using oleylamine as a transfer agent. These solvents were chosen because of the differences in their refractive indices. Using UV-Vis absorption spectrophotometry and transmission electron microscopy (TEM), we confirmed that there were no shape and size changes of the nanoparticles upon the transfer to the organic phase. The absorption spectra of the obtained Ag organosols showed changes only in the position of the SPR band depending on the dielectric property of the used solvent. To analyze these changes, absorption spectra were modelled using Mie theory for small spherical particles. The experimental and theoretical resonance values were compared with those predicted by the Drude model and its limitations in the analysis of absorption behavior of Ag NPs in organic solvents were briefly discussed.
AB  - Cilj ovog rada je eksperimentalno i teorijsko ispitivanje i upoređivanje pro- mena površinskih plazmona nanočestica srebra u vodi i organskim rastvaračima. Nanočestice srebra prečnika 5±1,5 nm sintetisane su u vodi redukcijom srebro nitrata pomoću natrijum borhidrida. Nakon toga, nanočestice su prebačene u različite organske rastvarače (hloroform, heksan, toluen i 1,2-dihlorbenzen) pomoću oleilamina. Upotrebljeni rastvarači izabrani su na osnovu razlike u indeksima pre- lamanja. Na osnovu UV-Vis apsorpcione spektrofotometrije i transmisione elektronske mikroskopije (TEM) potvrđeno je da nema promena u obliku i veličini čes- tica nakon transfera u organske rastvarače. Apsorpcioni spektri nanočestica srebra u različitim rastvaračima pokazuju promene u položaju površinskih plazmona na osnovu razlike u dielektričnim karakteristikama upotrebljenih rastvarača. Za analizu ovih promena eksperimentalni apsorpcioni spektri su modelovani pomoću Mie teorije za male sferne čestice. Eksperimentalne i teorijske vrednosti položaja površinskih plazmona nanočestica srebra upoređivane su sa Drude teorijom i diskutovana su ograničenja primene same teorije na ponašanja nanočestica srebra u organskim rastvaračima.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations
T1  - Rezonance površinskih plazmona organosola srebra - eksperimentalna i teorijska ispitivanja
VL  - 66
IS  - 6
SP  - 805
EP  - 812
DO  - 10.2298/HEMIND120112028V
ER  - 

@article{
author = "Vukoje, Ivana and Božanić, Dušan and Džunuzović, Jasna and Bogdanović, Una and Vodnik, Vesna",
year = "2012",
abstract = "The aim of this study was to investigate and compare the changes in surface plasmon resonance (SPR) of silver (Ag) hydrosol and organosols obtained by experimental and theoretical approaches. Silver nanoparticles (Ag NPs) of 5±1.5 nm in diameter were prepared in water by reduction of silver nitrate with sodium borohydride. Nanoparticles were subsequently transferred into different organic solvents (chloroform, hexane, toluene, 1,2-di- chlorobenzene) using oleylamine as a transfer agent. These solvents were chosen because of the differences in their refractive indices. Using UV-Vis absorption spectrophotometry and transmission electron microscopy (TEM), we confirmed that there were no shape and size changes of the nanoparticles upon the transfer to the organic phase. The absorption spectra of the obtained Ag organosols showed changes only in the position of the SPR band depending on the dielectric property of the used solvent. To analyze these changes, absorption spectra were modelled using Mie theory for small spherical particles. The experimental and theoretical resonance values were compared with those predicted by the Drude model and its limitations in the analysis of absorption behavior of Ag NPs in organic solvents were briefly discussed., Cilj ovog rada je eksperimentalno i teorijsko ispitivanje i upoređivanje pro- mena površinskih plazmona nanočestica srebra u vodi i organskim rastvaračima. Nanočestice srebra prečnika 5±1,5 nm sintetisane su u vodi redukcijom srebro nitrata pomoću natrijum borhidrida. Nakon toga, nanočestice su prebačene u različite organske rastvarače (hloroform, heksan, toluen i 1,2-dihlorbenzen) pomoću oleilamina. Upotrebljeni rastvarači izabrani su na osnovu razlike u indeksima pre- lamanja. Na osnovu UV-Vis apsorpcione spektrofotometrije i transmisione elektronske mikroskopije (TEM) potvrđeno je da nema promena u obliku i veličini čes- tica nakon transfera u organske rastvarače. Apsorpcioni spektri nanočestica srebra u različitim rastvaračima pokazuju promene u položaju površinskih plazmona na osnovu razlike u dielektričnim karakteristikama upotrebljenih rastvarača. Za analizu ovih promena eksperimentalni apsorpcioni spektri su modelovani pomoću Mie teorije za male sferne čestice. Eksperimentalne i teorijske vrednosti položaja površinskih plazmona nanočestica srebra upoređivane su sa Drude teorijom i diskutovana su ograničenja primene same teorije na ponašanja nanočestica srebra u organskim rastvaračima.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations, Rezonance površinskih plazmona organosola srebra - eksperimentalna i teorijska ispitivanja",
volume = "66",
number = "6",
pages = "805-812",
doi = "10.2298/HEMIND120112028V"
}

Vukoje, I., Božanić, D., Džunuzović, J., Bogdanović, U.,& Vodnik, V.. (2012). Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations. in Hemijska industrija
Association of Chemical Engineers of Serbia., 66(6), 805-812.
https://doi.org/10.2298/HEMIND120112028V

Vukoje I, Božanić D, Džunuzović J, Bogdanović U, Vodnik V. Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations. in Hemijska industrija. 2012;66(6):805-812.
doi:10.2298/HEMIND120112028V .

Vukoje, Ivana, Božanić, Dušan, Džunuzović, Jasna, Bogdanović, Una, Vodnik, Vesna, "Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations" in Hemijska industrija, 66, no. 6 (2012):805-812,
https://doi.org/10.2298/HEMIND120112028V . .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Bogdanović, Una
AU  - Nedeljković, Jovan
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6714
AB  - As continue of our previous studies, three silver organosols with different nanoparticles
sizes were used to obtain nanocomposite films based on Ag/PMMA system. Among polymeric
materials, PMMA is well known as a polymeric glass and engineering plastic with a wide range
of applications. One of the objectives of this work is to gain better insight into the properties of
this material upon incorporation of small amount of silver nanoparticles. Silver nanoparticles
were synthesized in various organic solvents (toluene, 1.2- dichlorobenzene ) in order to obtain
different sizes of nanoparticles: 7.2 ±2.8 nm, 13.7±2.7 nm and 22.7±3.5 nm. By varying the
heating temperature, solvent and reaction time, we could control the size of nanoparticles. In the
second step, nanocomposites Ag/PMMA were prepared by in-situ bulk polymerization of
methyl methacrylate in the presence of appropriate amount of silver nanoparticles. The size
distribution and morphology of the silver nanopaticles in the nanocomposite films were
determined using TEM measurements. The influence of size and dielectric property of
surrounding media on surface plasmon absorption band of silver nanoparticles are discussed.
UV-vis and FTIR spectroscopy have been applied to support the change in the optical and
chemical properties of the silver organosols, as well as transparent and coloured Ag/PMMA
nanocomposite films.
PB  - Belgrade: Materials Research Society of Serbia
C3  - Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro
T1  - Optical properties of nanocomposite films based on Ag/PMMA system
SP  - 147
EP  - 147
UR  - https://hdl.handle.net/21.15107/rcub_cer_6714
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Džunuzović, Enis and Džunuzović, Jasna and Bogdanović, Una and Nedeljković, Jovan",
year = "2011",
abstract = "As continue of our previous studies, three silver organosols with different nanoparticles
sizes were used to obtain nanocomposite films based on Ag/PMMA system. Among polymeric
materials, PMMA is well known as a polymeric glass and engineering plastic with a wide range
of applications. One of the objectives of this work is to gain better insight into the properties of
this material upon incorporation of small amount of silver nanoparticles. Silver nanoparticles
were synthesized in various organic solvents (toluene, 1.2- dichlorobenzene ) in order to obtain
different sizes of nanoparticles: 7.2 ±2.8 nm, 13.7±2.7 nm and 22.7±3.5 nm. By varying the
heating temperature, solvent and reaction time, we could control the size of nanoparticles. In the
second step, nanocomposites Ag/PMMA were prepared by in-situ bulk polymerization of
methyl methacrylate in the presence of appropriate amount of silver nanoparticles. The size
distribution and morphology of the silver nanopaticles in the nanocomposite films were
determined using TEM measurements. The influence of size and dielectric property of
surrounding media on surface plasmon absorption band of silver nanoparticles are discussed.
UV-vis and FTIR spectroscopy have been applied to support the change in the optical and
chemical properties of the silver organosols, as well as transparent and coloured Ag/PMMA
nanocomposite films.",
publisher = "Belgrade: Materials Research Society of Serbia",
journal = "Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro",
title = "Optical properties of nanocomposite films based on Ag/PMMA system",
pages = "147-147",
url = "https://hdl.handle.net/21.15107/rcub_cer_6714"
}

Vukoje, I., Vodnik, V., Džunuzović, E., Džunuzović, J., Bogdanović, U.,& Nedeljković, J.. (2011). Optical properties of nanocomposite films based on Ag/PMMA system. in Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro
Belgrade: Materials Research Society of Serbia., 147-147.
https://hdl.handle.net/21.15107/rcub_cer_6714

Vukoje I, Vodnik V, Džunuzović E, Džunuzović J, Bogdanović U, Nedeljković J. Optical properties of nanocomposite films based on Ag/PMMA system. in Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro. 2011;:147-147.
https://hdl.handle.net/21.15107/rcub_cer_6714 .

Vukoje, Ivana, Vodnik, Vesna, Džunuzović, Enis, Džunuzović, Jasna, Bogdanović, Una, Nedeljković, Jovan, "Optical properties of nanocomposite films based on Ag/PMMA system" in Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro (2011):147-147,
https://hdl.handle.net/21.15107/rcub_cer_6714 .