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Reduced-Graphene-Oxide with Traces of Iridium or Gold as Active Support for Pt Catalyst at Low Loading during Oxygen Electroreduction

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dc.abstract.enChemically-reduced graphene-oxide-supported gold or iridium nanoparticles are considered here as active carriers for dispersed platinum with an ultimate goal of producing improved catalysts for electroreduction of oxygen in acid medium. Comparison is made to the analogous systems not utilizing reduced graphene oxide. High electrocatalytic activity of platinum (loading up to 30 µg cm-2) dispersed over the reduced-graphene oxide-supported Au (up to 30 µg cm-2) or Ir (up to 1.5 µg cm-2) nanoparticles toward reduction of oxygen has been demonstrated using cyclic and rotating ring-disk electrode (RRDE) voltammetric experiments. Among important issues are possible activating interac tions between gold and the support, as well as presence of structural defects existing on poorly organized graphitic structure of reduced graphene oxide. The RRDE data are consistent with decreased formation of hydrogen peroxide.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorMiecznikowski, Krzysztof
dc.contributor.authorRutkowska, Iwona
dc.contributor.authorKulesza, Paweł
dc.contributor.authorDembińska, Beata
dc.contributor.authorŻołądek, Sylwia
dc.contributor.authorNoto, Vito Di
dc.contributor.authorNegro, Enrico
dc.date.accessioned2024-01-25T19:08:32Z
dc.date.available2024-01-25T19:08:32Z
dc.date.issued2017
dc.description.financeNie dotyczy
dc.description.number8
dc.description.volume80
dc.identifier.doi10.1149/08008.0869ECST
dc.identifier.issn1938-5862
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/118106
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofECS Transactions
dc.relation.pages869-877
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleReduced-Graphene-Oxide with Traces of Iridium or Gold as Active Support for Pt Catalyst at Low Loading during Oxygen Electroreduction
dc.typeJournalArticle
dspace.entity.typePublication