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dc.contributor.authorTIAN, Na
dc.contributor.author田娜
dc.contributor.authorCHEN, Wei
dc.contributor.author陈卫
dc.contributor.authorSUN, Shi-Gang
dc.contributor.author孙世刚
dc.date.accessioned2011-12-01T02:40:08Z
dc.date.available2011-12-01T02:40:08Z
dc.date.issued2005
dc.identifier.citationACTA PHYSICO-CHIMICA SINICA,2005,21(1):74-78zh_CN
dc.identifier.issn1000-6818
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/11276
dc.description.abstractCore-shell Au-Pt nanoparticles were synthesized by chemical reduction method. The mean diameter of the nanoparticles was determined to be 27 nm by transmission electron microscope(TEM). The prepared nanoparticles were characterized by ultraviolet-visible(UV-Vis) and infrared transmission spectroscopy. The disappearance of the characteristic peak near 520 nm of Au nanoparticles in UV-Vis spectroscopy confirmed the formation of the core-shell structure. Using infrared transmission spectroscopy, the geminal CO adsorbates that yielded a doublet IR band at around 2110 cm(-1) and 2063 cm(-1) on core-shell Au-Pt nanoparticles were detected for the first time. The core-shell Au-Pt nanoparticles supported on GC (glassy carbon) substrate as electrode exhibited good electrocatalytic properties for the oxidation of adsorbed CO(COad) species. The onset and peak potentials of COad oxidation were negatively shifted 0.45 and 0.11 V, respectively, in referring to the values measured on a bulk Pt electrode.zh_CN
dc.language.isozhzh_CN
dc.publisherPEKING UNIV PRESSzh_CN
dc.subjectcore-shellzh_CN
dc.subjectAu-Pt nanoparticleszh_CN
dc.subjectgeminal COzh_CN
dc.subjectCO oxidationzh_CN
dc.titleSpectroscopic characterization and electrocatalytic properties of core-shell Au-Pt nanoparticleszh_CN
dc.typeArticlezh_CN


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