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Dopant induced effect on electrocatalytic reduction of nitrobenzene using conducting polypyrrole thin film electrodes
YKI – Ytkemiska institutet.
2011 (Engelska)Ingår i: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 120, nr 2, s. 719-724Artikel i tidskrift (Refereegranskat)
Abstract [en]

Conducting polypyrrole electrodes were prepared by electrochemical polymerization of pyrrole on vacuum-metallized glass substrates. These electrodes were modified by doping with a range of metal halides as dopant ions having different electronegativity. Electrochemical reduction of nitrobenzene using these electrodes was studied by means of cyclic voltammetry technique in acetonitrile medium containing aqueous HClO4 (0.1M) as supporting electrolyte. It was found that the electronegativity of the dopant ion played a very important role in the electrocatalytic activity. Polypyrrole doped with nickel chloride gave the highest anodic current at the reduction potential of nitrobenzene. The results were explained on the basis of charge transfer efficiency at the electrode-electrolyte interface, which was associated with the acceptor state created by the dopant in the semi-conducting polymer.

Ort, förlag, år, upplaga, sidor
2011. Vol. 120, nr 2, s. 719-724
Nyckelord [en]
conducting polymer, charge transfer, polypyrrole, doping, electrocatalysis, nitrobenzene, reduction
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-27014OAI: oai:DiVA.org:ri-27014DiVA, id: diva2:1054018
Anmärkning
A3001Tillgänglig från: 2016-12-08 Skapad: 2016-12-08 Senast uppdaterad: 2017-11-29Bibliografiskt granskad

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