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dc.contributor.authorWang, S.
dc.contributor.authorWang, X.
dc.contributor.authorJiang, San Ping
dc.date.accessioned2017-01-30T14:51:53Z
dc.date.available2017-01-30T14:51:53Z
dc.date.created2014-10-08T06:00:43Z
dc.date.issued2011
dc.identifier.citationWang, S. and Wang, X. and Jiang, S.P. 2011. Self-assembly of mixed Pt and Au nanoparticles on PDDA-functionalized graphene as effective electrocatalysts for formic acid oxidation of fuel cells. Physical Chemistry Chemical Physics. 13: pp. 6883-6891.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/41455
dc.identifier.doi10.1039/C0CP02495C
dc.description.abstract

Pt and Au nanoparticles with controlled Pt :Au molar ratios and PtAu nanoparticle loadings were successfully self-assembled onto poly(diallyldimethylammonium chloride) (PDDA)-functionalized graphene (PDDA-G) as highly effective electrocatalysts for formic acid oxidation in direct formic acid fuel cells (DFAFCs). The simultaneously assembled Pt and Au nanoparticles on PDDA-G showed superb electrocatalytic activity for HCOOH oxidation, and the current density associated with the preferred dehydrogenation pathway for the direct formation of CO2 through HCOOH oxidation on a Pt1Au8/PDDA-G (i.e., a Pt :Au ratio of 1 : 8) is 32 times higher than on monometallic Pt/PDDA-G. The main function of the Au in the mixed Pt and Au nanoparticles on PDDA-G is to facilitate the first electron transfer from HCOOH to HCOOads and the effective spillover of HCOOads from Au to Pt nanoparticles, where HCOOads is further oxidized to CO2. The Pt :Au molar ratio and PtAu nanoparticle loading on PDDA-G supports are the two critical factors to achieve excellent electrocatalytic activity of PtAu/PDDA-G catalysts for the HCOOH oxidation reactions.

dc.publisherRoyal Society of Chemistry
dc.titleSelf-assembly of mixed Pt and Au nanoparticles on PDDA-functionalized graphene as effective electrocatalysts for formic acid oxidation of fuel cells
dc.typeJournal Article
dcterms.source.volume13
dcterms.source.startPage6883
dcterms.source.endPage6891
dcterms.source.issn14639076
dcterms.source.titlePhysical Chemistry Chemical Physics
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


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