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dc.contributor.authorChen, SP
dc.contributor.author陈声培
dc.contributor.authorHuang, T
dc.contributor.author黄桃
dc.contributor.authorZhen, CH
dc.contributor.author甄春花
dc.contributor.authorZhang, Q
dc.contributor.author张麒
dc.contributor.authorGong, H
dc.contributor.author贡辉
dc.contributor.authorSun, SG
dc.contributor.author孙世刚
dc.date.accessioned2012-04-26T01:13:34Z
dc.date.available2012-04-26T01:13:34Z
dc.date.issued2003
dc.identifier.citationSPECTROSCOPY AND SPECTRAL ANALYSIS,2003,23(2):273-275zh_CN
dc.identifier.issn1000-0593
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/12171
dc.description.abstractElectrocatalytic properties of three electrodes for formic acid oxidation were studied by using electrochemical in situ FTIR spectrosoopy and cyclic voltammetry in this paper. It is demonstrated that the electrocatalytical mechanism of formic acid oxidation on platinum-dispersed carbon(Pt/GC) is similar to that on massive platinum, which involves two paths, i.e. one way through active intermediate and the other through poison intermediate to CO2. The Pt/GC exhibits higher catalytivity than pure platinum. The electrode of Pt/GC modified by Sb (Sb-Pt/GC) was also prepared in the work. It was observed that the onset potential (E-i) for formic acid oxidation on Sb-Pt/GC was shift negatively for 0.20 V. The peak potential (E,) was observed to shifted negatively to 0.34 V and the value of oxidation current (j(p)) was enhanced nearly 7.28 times. Similar results were also observed on surface alloy/GC prepared. In this case, E-j and E-p were -0.12 and 0.32 V, respectively, j(p) was enhanced about 8.15 times, and FWHM (full width at half maximum) was 0.50 V. It is indicated that Sb-Pt/GC and surface alloy/GC can not only effectively restrain the formation of poison intermediate CO, but also significantly increase the electrocatalytic activities for oxidation of active intermediates.zh_CN
dc.language.isoenzh_CN
dc.publisherBEIJING UNIV PRESSzh_CN
dc.subjectHCOOH oxidationzh_CN
dc.subjectsurface alloy electrocatalystzh_CN
dc.subjectin situ FTIRSzh_CN
dc.titleIn situ FTIR spectroscopy studies of HCOOH oxidation on surface alloy electrocatalystszh_CN
dc.typeArticlezh_CN


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