Modeling of hydrogen upd isotherms

被引：45

作者：

Lasia, A ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Chim, Sherbrooke, PQ J1K 2R1, Canada

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2004年 / 562卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

hydrogen upd; hydrogen adsorption; adsorption isotherms; platinum electrodes;

D O I：

10.1016/j.jelechem.2003.07.033

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Isotherms of hydrogen underpotential deposition on Pt(1 0 0), (1 1 0) and (1 1 1) in HClO4 and H2SO4 were obtained from cyclic voltammograms. They were used to determine Gibbs energies of adsorption, standard Gibbs energies of adsorption, interaction parameters and their derivatives, and the reference state surface coverages. The results obtained permitted us to determine the attractive/repulsive interactions existing during hydrogen adsorption on monocrystalline platinum. Simple Frumkin type isotherm may well describe H adsorption on Pt(1 0 0) in HClO4, Pt(1 1 0) in H2SO4 and Pt(1 1 1) in both acids. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：23 / 31

页数：9

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