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Electro-oxidation of methanol on Pt(111) in acid solutions: effects of electrolyte anions during electrocatalytic reactions

✍ Scribed by Hirohito Ogasawara; Masatoki Ito

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 439 KB
Volume: 245
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)00987-f

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✦ Synopsis

The electro-oxidation of methanol on a Pt(111) surface in both sulfuric and perchloric acid solutions was investigated by combined apparatus under both ultra-high vacuum and electrochemical environments. In sulfuric acid solution, a strong lateral interaction was observed between adsorbed bisulfate and CO derived from methanol. Coadsorption of CO derived from methanol with bisulfate ion yielded a (Vr7 " x ¢r7")-Rlg.l°-CO-bisulfate structure. In perchloric acid solution, however, no lateral interaction between adsorbed CO and perchlorate was seen. The difference in reaction rates of methanol oxidation in both solutions was explained by these specific anion adsorption effects.

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