Analysis of irreversible oxidation wave of adsorbed CO at Pt(1 1 1), Pt(1 0 0) and Pt(1 1 0) electrodes

H. Kita, H. Narumi, Shen Ye, H. Naohara

研究成果: Article査読

26 被引用数 (Scopus)

抄録

The oxidation wave of CO preadsorbed at 50 mV on Pt(1 1 1), (1 0 0) and (1 1 0) electrodes in phosphate buffer solution of pH 3 was observed as a function of the sweep rate. The sweep rate dependence of the peak current and peak potential, as well as the form of the wave, were examined on the basis of the Gilman mechanism that the electron transfer from a complex consisting of CO and oxygen containing species is the rate-determining step. An electron transfer step from CO itself was excluded. The peak current and peak potential analyses and the wave simulation gave the same value for Δf, the change in the interaction energy during the formation of the activated complex from the reactants. Δf was sweep-rate and surface-structure dependent. The nature of Δf was discussed.

本文言語English
ページ(範囲)589-596
ページ数8
ジャーナルJournal of Applied Electrochemistry
23
6
DOI
出版ステータスPublished - 1993 6 1
外部発表はい

ASJC Scopus subject areas

  • 電気化学

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