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

Autor:	Hideaki Kita, H. Narumi, Hideo Naohara, Shen Ye
Rok vydání:	1993
Předmět:	Reaction mechanism Stereochemistry General Chemical Engineering Activated complex Analytical chemistry chemistry.chemical_element Buffer solution Interaction energy Electrochemistry chemistry.chemical_compound Electron transfer chemistry Materials Chemistry Platinum Voltammetry
Zdroj:	Journal of Applied Electrochemistry. 23:589-596
ISSN:	1572-8838 0021-891X
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3bc94f9a0b165100e9d3d6df40e15fd2 https://doi.org/10.1007/bf00721950 Zobrazit plný text záznamu Full text from SpringerLink