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

dc.creatorJovanović, Željka
dc.creatorRadosavljević, Aleksandra
dc.creatorKačarević-Popović, Zorica M.
dc.creatorMišković-Stanković, Vesna
dc.date.accessioned2021-03-10T11:28:02Z
dc.date.available2021-03-10T11:28:02Z
dc.date.issued2011
dc.identifier.issn0367-598X
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1778
dc.description.abstractSilver/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.en
dc.description.abstractNanokompoziti 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.sr
dc.publisherAssociation of Chemical Engineers of Serbia
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45005/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceHemijska industrija
dc.subjectsilver nanoparticlesen
dc.subjectpoly(N-vinyl-2-pyrrolidone)en
dc.subjectnanocompositesen
dc.subjectelectrochemical reductionen
dc.subjectspectroscopyen
dc.subjectnanočestice srebrasr
dc.subjectpoli(N-vinil-2-pirolidon)sr
dc.subjectnanokompozitisr
dc.subjectelektrohemijska redukcijasr
dc.subjectspektroskopijasr
dc.titleSilver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesisen
dc.titleSrebro/poli(N-vinil-2-pirolidon) nanokompoziti dobijeni elektrohemijskom sintezomsr
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage696
dc.citation.issue6
dc.citation.other65(6): 687-696
dc.citation.rankM23
dc.citation.spage687
dc.citation.volume65
dc.identifier.doi10.2298/HEMIND110915064J
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/8651/0367-598X1106687J.pdf
dc.identifier.rcubconv_1337
dc.identifier.scopus2-s2.0-84855277829
dc.identifier.wos000302108800007
dc.type.versionpublishedVersion


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