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dc.contributor.authorJin, Mingshang
dc.contributor.authorLiu, Hongyang( Washington Univ, Dept Biomed Engn)
dc.contributor.authorZhang, Hui( Washington Univ, Dept Biomed Engn)
dc.contributor.authorXie, Zhaoxiong
dc.contributor.author谢兆雄
dc.contributor.authorLiu, Jingyue( Univ Missouri, Dept Phys & Astron)
dc.contributor.authorXia, Younan( Washington Univ, Dept Biomed Engn)
dc.date.accessioned2012-04-01T00:36:30Z
dc.date.available2012-04-01T00:36:30Z
dc.date.issued2011
dc.identifier.citationNANO RESEARCH,2011,4(1):83-91zh_CN
dc.identifier.issn1998-0124
dc.identifier.urihttp://dx.doi.org/doi:10.1007/s12274-010-0051-3
dc.identifier.uriWOS:000287973600007
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/11953
dc.description.abstractThe catalytic activity of noble-metal nanocrystals is mainly determined by their sizes and the facets exposed on the surface. For single crystals, it has been demonstrated that the Pd(100) surface is catalytically more active than both Pd(110) and Pd(111) surfaces for the CO oxidation reaction. Here we report the synthesis of Pd nanocrystals enclosed by {100} facets with controllable sizes in the range of 6-18 nm by manipulating the rate of reduction of the precursor. UV-vis spectroscopy studies indicate that the rate of reduction of Na(2)PdCl(4) can be controlled by adjusting the concentrations of Br(-) and Cl(-) ions added to the reaction mixture. Pd nanocrystals with different sizes were immobilized on ZnO nanowires and evaluated as catalysts for CO oxidation. We found that the activity of this catalytic system for CO oxidation showed a strong dependence on the nanocrystal size. When the size of the Pd nanocrystals was reduced from 18 nm to 6 nm, the maximum conversion rate was significantly enhanced by a factor of similar to 10 and the corresponding maximum conversion temperature was lowered by similar to 80 degrees C.zh_CN
dc.description.sponsorshipNSF[DMR-0804088, ECS-0335765]; Washington University in St. Louis; China Scholarship Council (CSC); University of Missouri-St. Louiszh_CN
dc.language.isoenzh_CN
dc.publisherTSINGHUA UNIV PRESSzh_CN
dc.subjectPalladiumzh_CN
dc.subjectnanocubeszh_CN
dc.subjectCO oxidationzh_CN
dc.subjectsize-dependencezh_CN
dc.titleSynthesis of Pd Nanocrystals Enclosed by {100} Facets and with Sizes < 10 nm for Application in CO Oxidationzh_CN
dc.typeArticlezh_CN


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