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The electrochemical synthesis of different Ag/PVP nanocomposites

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2010
1554.pdf (702.9Kb)
Authors
Jovanović, Željka
Panić, Vladimir
Nikolić, Branislav
Mišković-Stanković, Vesna
conferenceObject (publishedVersion)
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Abstract
The potential use of Ag/poly(N-vinyl-2-pyrrolidone) (PVP) nanocomposites is in wound dressings or soft tissue implants, where Ag nanoparticles (AgNPs) serve as the antimicrobial agent. Ag/PVP nanocomposites were electrochemically synthesized, by the electrochemical reduction of Ag+ ions into the AgNPs in the PVP aqueous solution and within the crosslinked PVP matrix, forming the non-crosslinked and crosslinked Ag/PVP nanocomposite, respectively. The synthesis of AgNPs was performed in an electrochemical cell with Pt working and counter electrodes and the saturated calomel electrode (SCE) as the reference. The non-crosslinked Ag/PVP nanocomposite was obtained by galvanostatic reduction of Ag+ ions from the aqueous solution consisted of 0.10 M KNO3, 3.9 mM AgNO3 and 10 wt. % PVP. The crosslinked Ag/PVP nanocomposite was obtained by in situ potentiostatic reduction of Ag+ ions within PVP hydrogel, previously prepared by -irradiation of the 10 wt. % PVP aqueous solution. Hydrogels were swo...llen in two different aqueous solutions ((a) 3.9 mM AgNO3, (b) 3.9 mM AgNO3 + 0.10 M KNO3) for 24 h. Ag/PVP nanocomposite systems were characterized by UV-Vis spectroscopy, FTIR, TEM, XRD, Z-sizer analysis and cyclic voltammetry.

Keywords:
Nanocomposites / Cyclic voltammetry / Electrochemical synthesis
Source:
Second Regional Symposium on Electrochemistry South-East Europe, RSE-SEE, Program and Book of Abstra, 2010, 155-155
Publisher:
  • Serbian Chemical Society, Belgrade
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http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1557
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  • Radovi istraživača / Researchers’ publications (TMF)
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Tehnološko-metalurški fakultet

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