Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.apcatb.2014.04.018
DC FieldValue
dc.titleEnhanced electrocatalytic performance on polymer-stabilized graphene decorated with alloy nanoparticles for ethanol oxidation reaction in alkaline media
dc.contributor.authorDutta, A.
dc.contributor.authorOuyang, J.
dc.date.accessioned2014-10-07T09:49:05Z
dc.date.available2014-10-07T09:49:05Z
dc.date.issued2014
dc.identifier.citationDutta, A., Ouyang, J. (2014). Enhanced electrocatalytic performance on polymer-stabilized graphene decorated with alloy nanoparticles for ethanol oxidation reaction in alkaline media. Applied Catalysis B: Environmental 158-159 : 119-128. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apcatb.2014.04.018
dc.identifier.issn09263373
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/86300
dc.description.abstractWe explore a green method to grow metal alloy nanoparticles (NPs) on reduced graphene oxide stabilized with polyvinylpyrrolidone (PVP) in aqueous solution with sodium borohydride as a reducing agent for metal ions. PVP was used to stabilize nano-graphene sheets (NGs) in solution and prevent their aggregation. The synthetic experimental conditions were studied to control the size, shape and distribution of alloy nanoparticles anchored on the graphene sheets. AuPt nanoparticles on PVP-stabilized graphene (PVP-NGs-AuPt) show higher catalytic activity and stability than those on graphene without PVP (NGs-AuPt) toward the ethanol oxidation reaction (EOR) in alkaline media. PVP-NGs-AuPt can increase the EOR peak current density by more than 160%, ~100% and 78% as compared with Pt on carbon, AuPt on carbon and NGs-AuPt, respectively. Moreover, the poisoning of PVP-NGs-AuPt during the EOR is less significant than that of NGs-AuPt, as revealed by analyzing the intermediates products, acetate and carbonate, by ion exchange chromatography. The high electrocatalytic activity of PVP-NGs-AuPt is attributed to the surface activation by OH- and the interaction between the AuPt NPs and graphene, which can improve the CO oxidation within the applied potential range. © 2014 Elsevier B.V.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.apcatb.2014.04.018
dc.sourceScopus
dc.subjectAlloy
dc.subjectAuPt
dc.subjectElectrocatalysis
dc.subjectGraphene
dc.subjectNanoparticles
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1016/j.apcatb.2014.04.018
dc.description.sourcetitleApplied Catalysis B: Environmental
dc.description.volume158-159
dc.description.page119-128
dc.description.codenACBEE
dc.identifier.isiut000339133500015
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