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Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis

Srebro/poli(N-vinil-2-pirolidon) nanokompoziti dobijeni elektrohemijskom sintezom

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0367-598X1106687J.pdf (439.7Kb)
Аутори
Jovanović, Željka
Radosavljević, Aleksandra
Kačarević-Popović, Zorica M.
Mišković-Stanković, Vesna
Чланак у часопису (Објављена верзија)
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Апстракт
Silver/poly(N-vinyl-2-pyrrolidone) (Ag/PVP) nanocomposites were obtained by electrochemical reduction of Ag+ at a constant voltage, by in situ synthesis of silver nanoparticles inside a poly(N-vinyl-2-pyrrolidone) matrix, previously cross-linked by g-irradiation. Optimal values of synthesis parameters were investigated: the composition of the solution for swelling of PVP hydrogel, implementation time and applied voltage. Ag/PVP nanocomposites were characterized by UV-Visible spectroscopy, and IR spectroscopy. UV-Visible spectroscopy results showed that the reduction of silver ions was more efficient when the more conductive solution for swelling of PVP hydrogel was used, i.e., the solution containing 3.9 mM AgNO3 with 0.1 M KNO3. It was also shown that the concentration of the reduced silver increases with the increase in implementation time and applied voltage, up to values of 4 min and 200 V, respectively. The Ag nanoparticle size was estimated to be 25 nm, by comparison of the exper...imental results of UV-Vis spectroscopy with the theoretical predictions obtained by the calculations in 'MiePlot v.3.4' software, having the algorithm based on Mie scattering from a sphere. The results of FTIR spectroscopy have shown that Ag nanoparticles were mainly bonded to PVP by coordination bondages between Ag nanoparticles and N from the pyrrolidone ring of PVP.

Nanokompoziti srebra i poli(N-vinil-2-pirolidona), PVP, dobijeni su elektrohemijskom redukcijom Ag+ pri konstantnom naponu, in situ sintezom nanočestica srebra u umreženoj matrici PVP, prethodno dobijenoj radijaciono-hemijskim putem. Optimizacija elektrohemijske sinteze nanočestica srebra je vršena variranjem sledećih parametara: sastava rastvora za bubrenje PVP hidrogela, vremena implementacije i primenjenog napona. Prisustvo nanočestica srebra u Ag/PVP nanokompozitima potvrđeno je UV-vidljivom spektroskopijom, dok je postojanje interakcija između nanočestica srebra i molekula PVP potvrđeno FTIR spektroskopijom. Rezultati rada ukazuju na to da je redukcija srebra efikasnija kada se koristi rastvor za bubrenje veće provodljivosti, kao i da koncentracija dobijenih nanočestica srebra raste sa produžetkom vremena implementacije i povećanjem primenjenog napona.
Кључне речи:
silver nanoparticles / poly(N-vinyl-2-pyrrolidone) / nanocomposites / electrochemical reduction / spectroscopy / nanočestice srebra / poli(N-vinil-2-pirolidon) / nanokompoziti / elektrohemijska redukcija / spektroskopija
Извор:
Hemijska industrija, 2011, 65, 6, 687-696
Издавач:
  • Association of Chemical Engineers of Serbia
Финансирање / пројекти:
  • Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-45019)
  • Функционални, функционализовани и усавршени нано материјали (RS-45005)

DOI: 10.2298/HEMIND110915064J

ISSN: 0367-598X

WoS: 000302108800007

Scopus: 2-s2.0-84855277829
[ Google Scholar ]
2
2
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1778
Колекције
  • Radovi istraživača / Researchers’ publications (TMF)
Институција/група
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Jovanović, Željka
AU  - Radosavljević, Aleksandra
AU  - Kačarević-Popović, Zorica M.
AU  - Mišković-Stanković, Vesna
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1778
AB  - Silver/poly(N-vinyl-2-pyrrolidone) (Ag/PVP) nanocomposites were obtained by electrochemical reduction of Ag+ at a constant voltage, by in situ synthesis of silver nanoparticles inside a poly(N-vinyl-2-pyrrolidone) matrix, previously cross-linked by g-irradiation. Optimal values of synthesis parameters were investigated: the composition of the solution for swelling of PVP hydrogel, implementation time and applied voltage. Ag/PVP nanocomposites were characterized by UV-Visible spectroscopy, and IR spectroscopy. UV-Visible spectroscopy results showed that the reduction of silver ions was more efficient when the more conductive solution for swelling of PVP hydrogel was used, i.e., the solution containing 3.9 mM AgNO3 with 0.1 M KNO3. It was also shown that the concentration of the reduced silver increases with the increase in implementation time and applied voltage, up to values of 4 min and 200 V, respectively. The Ag nanoparticle size was estimated to be 25 nm, by comparison of the experimental results of UV-Vis spectroscopy with the theoretical predictions obtained by the calculations in 'MiePlot v.3.4' software, having the algorithm based on Mie scattering from a sphere. The results of FTIR spectroscopy have shown that Ag nanoparticles were mainly bonded to PVP by coordination bondages between Ag nanoparticles and N from the pyrrolidone ring of PVP.
AB  - Nanokompoziti srebra i poli(N-vinil-2-pirolidona), PVP, dobijeni su elektrohemijskom redukcijom Ag+ pri konstantnom naponu, in situ sintezom nanočestica srebra u umreženoj matrici PVP, prethodno dobijenoj radijaciono-hemijskim putem. Optimizacija elektrohemijske sinteze nanočestica srebra je vršena variranjem sledećih parametara: sastava rastvora za bubrenje PVP hidrogela, vremena implementacije i primenjenog napona. Prisustvo nanočestica srebra u Ag/PVP nanokompozitima potvrđeno je UV-vidljivom spektroskopijom, dok je postojanje interakcija između nanočestica srebra i molekula PVP potvrđeno FTIR spektroskopijom. Rezultati rada ukazuju na to da je redukcija srebra efikasnija kada se koristi rastvor za bubrenje veće provodljivosti, kao i da koncentracija dobijenih nanočestica srebra raste sa produžetkom vremena implementacije i povećanjem primenjenog napona.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis
T1  - Srebro/poli(N-vinil-2-pirolidon) nanokompoziti dobijeni elektrohemijskom sintezom
EP  - 696
IS  - 6
SP  - 687
VL  - 65
DO  - 10.2298/HEMIND110915064J
ER  - 
@article{
author = "Jovanović, Željka and Radosavljević, Aleksandra and Kačarević-Popović, Zorica M. and Mišković-Stanković, Vesna",
year = "2011",
abstract = "Silver/poly(N-vinyl-2-pyrrolidone) (Ag/PVP) nanocomposites were obtained by electrochemical reduction of Ag+ at a constant voltage, by in situ synthesis of silver nanoparticles inside a poly(N-vinyl-2-pyrrolidone) matrix, previously cross-linked by g-irradiation. Optimal values of synthesis parameters were investigated: the composition of the solution for swelling of PVP hydrogel, implementation time and applied voltage. Ag/PVP nanocomposites were characterized by UV-Visible spectroscopy, and IR spectroscopy. UV-Visible spectroscopy results showed that the reduction of silver ions was more efficient when the more conductive solution for swelling of PVP hydrogel was used, i.e., the solution containing 3.9 mM AgNO3 with 0.1 M KNO3. It was also shown that the concentration of the reduced silver increases with the increase in implementation time and applied voltage, up to values of 4 min and 200 V, respectively. The Ag nanoparticle size was estimated to be 25 nm, by comparison of the experimental results of UV-Vis spectroscopy with the theoretical predictions obtained by the calculations in 'MiePlot v.3.4' software, having the algorithm based on Mie scattering from a sphere. The results of FTIR spectroscopy have shown that Ag nanoparticles were mainly bonded to PVP by coordination bondages between Ag nanoparticles and N from the pyrrolidone ring of PVP., Nanokompoziti srebra i poli(N-vinil-2-pirolidona), PVP, dobijeni su elektrohemijskom redukcijom Ag+ pri konstantnom naponu, in situ sintezom nanočestica srebra u umreženoj matrici PVP, prethodno dobijenoj radijaciono-hemijskim putem. Optimizacija elektrohemijske sinteze nanočestica srebra je vršena variranjem sledećih parametara: sastava rastvora za bubrenje PVP hidrogela, vremena implementacije i primenjenog napona. Prisustvo nanočestica srebra u Ag/PVP nanokompozitima potvrđeno je UV-vidljivom spektroskopijom, dok je postojanje interakcija između nanočestica srebra i molekula PVP potvrđeno FTIR spektroskopijom. Rezultati rada ukazuju na to da je redukcija srebra efikasnija kada se koristi rastvor za bubrenje veće provodljivosti, kao i da koncentracija dobijenih nanočestica srebra raste sa produžetkom vremena implementacije i povećanjem primenjenog napona.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis, Srebro/poli(N-vinil-2-pirolidon) nanokompoziti dobijeni elektrohemijskom sintezom",
pages = "696-687",
number = "6",
volume = "65",
doi = "10.2298/HEMIND110915064J"
}
Jovanović, Ž., Radosavljević, A., Kačarević-Popović, Z. M.,& Mišković-Stanković, V.. (2011). Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis. in Hemijska industrija
Association of Chemical Engineers of Serbia., 65(6), 687-696.
https://doi.org/10.2298/HEMIND110915064J
Jovanović Ž, Radosavljević A, Kačarević-Popović ZM, Mišković-Stanković V. Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis. in Hemijska industrija. 2011;65(6):687-696.
doi:10.2298/HEMIND110915064J .
Jovanović, Željka, Radosavljević, Aleksandra, Kačarević-Popović, Zorica M., Mišković-Stanković, Vesna, "Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis" in Hemijska industrija, 65, no. 6 (2011):687-696,
https://doi.org/10.2298/HEMIND110915064J . .

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