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dc.contributor.authorTian, Na
dc.contributor.author田娜
dc.contributor.authorZhou, Zhi-You
dc.contributor.author周志有
dc.contributor.authorSun, Shi-Gang
dc.contributor.author孙世刚
dc.contributor.authorDing, Yong
dc.contributor.authorWang, Zhong Lin
dc.date.accessioned2011-06-13T01:49:08Z
dc.date.available2011-06-13T01:49:08Z
dc.date.issued2007-05
dc.identifier.citationSCIENCE,2007,316(5825):732-735zh_CN
dc.identifier.issn0036-8075
dc.identifier.urihttp://dx.doi.org/doi:10.1126/science.1140484
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/9503
dc.description.abstractThe shapes of noble metal nanocrystals (NCs) are usually defined by polyhedra that are enclosed by {111} and {100} facets, such as cubes, tetrahedra, and octahedra. Platinum NCs of unusual tetrahexahedral (THH) shape were prepared at high yield by an electrochemical treatment of Pt nanospheres supported on glassy carbon by a square-wave potential. The single-crystal THH NC is enclosed by 24 high-index facets such as {730}, {210}, and/or {520} surfaces that have a large density of atomic steps and dangling bonds. These high-energy surfaces are stable thermally ( to 800 C) and chemically and exhibit much enhanced ( up to 400%) catalytic activity for equivalent Pt surface areas for electro-oxidation of small organic fuels such as formic acid and ethanol.zh_CN
dc.language.isoenzh_CN
dc.publisherAMER ASSOC ADVANCEMENT SCIENCEzh_CN
dc.titleSynthesis of tetrahexahedral platinum nanocrystals with high-index facets and high electro-oxidation activityzh_CN
dc.typeArticlezh_CN


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