Self-assembly of mixed Pt and Au nanoparticles on PDDA-functionalized graphene as effective electrocatalysts for formic acid oxidation of fuel cells
dc.contributor.author | Wang, S. | |
dc.contributor.author | Wang, X. | |
dc.contributor.author | Jiang, San Ping | |
dc.date.accessioned | 2017-01-30T14:51:53Z | |
dc.date.available | 2017-01-30T14:51:53Z | |
dc.date.created | 2014-10-08T06:00:43Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Wang, 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.uri | http://hdl.handle.net/20.500.11937/41455 | |
dc.identifier.doi | 10.1039/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.publisher | Royal Society of Chemistry | |
dc.title | Self-assembly of mixed Pt and Au nanoparticles on PDDA-functionalized graphene as effective electrocatalysts for formic acid oxidation of fuel cells | |
dc.type | Journal Article | |
dcterms.source.volume | 13 | |
dcterms.source.startPage | 6883 | |
dcterms.source.endPage | 6891 | |
dcterms.source.issn | 14639076 | |
dcterms.source.title | Physical Chemistry Chemical Physics | |
curtin.department | Department of Chemical Engineering | |
curtin.accessStatus | Fulltext not available |