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dc.contributor.authorChen, Guoqin
dc.contributor.authorLiao, Mengyin
dc.contributor.authorYu, Biqing
dc.contributor.authorLi, Yunhua
dc.contributor.authorWang, Dong
dc.contributor.authorYou, Guirong
dc.contributor.authorZhong, Chuan-Jian
dc.contributor.authorChen, Bing H.
dc.contributor.author陈秉辉
dc.date.accessioned2013-03-18T08:01:00Z
dc.date.available2013-03-18T08:01:00Z
dc.date.issued2012-07
dc.identifier.citationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2012,37(13):9959-9966zh_CN
dc.identifier.issn0360-3199
dc.identifier.urihttp://dx.doi.org/10.1016/j.ijhydene.2012.03.159
dc.identifier.uriWOS:000306038800004
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/15155
dc.description.abstractUnderstanding how the pathway of formic acid electrooxidation depends on the composition and structure of Pt or Pd atoms on the surface of Pd- or Pt-based nanoparticles is important for designing catalysts aiming toward active, selective, stable, and low-cost. This work reports new findings of the investigation of submonolayer Pt decorated PdAu/C nanocatalysts (donated as Pt-PdAu/C) for formic acid electrooxidation. The Pt-PdAu/C are synthesized via a spontaneous displacement reaction and characterized by an array of analytical techniques including transmission electron microscopy, X-ray diffraction and Xray photoelectron spectroscopy. The electrocatalytic activity is examined using cyclic voltammetric and chronoamperometric measurements. The results show that the as-prepared Pt-PdAu/C with an optimal Pt:Pd atomic ratio of 1:100 exhibits enhanced electrocatalytic activity for formic acid electrooxidation compared with the PdAu/C and commercial the Pt/C catalysts. The oxidation potential on the Pt-PdAu/C shifts negatively by about 200 mV compared with that of the PdAu/C. The enhanced electrocatalytic activity and stability are attributed to the replacement of the Pd atom layer by Pt atoms, which significantly reduces the presence of the so-called "three neighboring site of Pd or Pt atoms in the Pt-PdAu/C to efficiently suppress CO formation. The enhanced activity/stability and ultralow Pt loading of the Pt-PdAu/C have implications to the development of commercially-viable catalysts for application in direct formic acid fuel cells and catalysis. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.zh_CN
dc.description.sponsorshipNatural Science Foundation of China [NSFC 20973140]; Fundamental Research Funds for the Central Universities [201112G004]; NSF [CHE 0848701]zh_CN
dc.language.isoenzh_CN
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDzh_CN
dc.subjectCore-shell nanocatalystzh_CN
dc.subjectDisplacement reactionzh_CN
dc.subjectFuel cellszh_CN
dc.subjectPlatinum submonolayerzh_CN
dc.subjectFormic acid electrooxidationzh_CN
dc.titlePt decorated PdAu/C nanocatalysts with ultralow Pt loading for formic acid electrooxidationzh_CN
dc.typeArticlezh_CN


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