INVESTIGATION OF GOLD OXIDATION IN SULFURIC MEDIUM .1. ELECTROCHEMICAL IMPEDANCE TECHNIQUES

被引：31

作者：

BOURKANE, S

GABRIELLE, C

HUET, F

KEDDAM, M

机构：

[1] UPR15 du C.N.R.S. Physique des Liquides et Electrochimie, Université Pierre et Marie Curie, 75252 Paris Cedex 05, tour 22, 4, place Jussieu

来源：

ELECTROCHIMICA ACTA | 1993年 / 38卷 / 07期

关键词：

GOLD OXIDATION; IMPEDANCE; VOLTAMMETRY;

D O I：

10.1016/0013-4686(93)87022-6

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Gold oxidation in a sulfuric medium was investiged by means of cyclic voltammetry and electrochemical impedance techniques. The experimental results were compared with a three-step reaction mechanism model which also explains the experimental voltammograms. The theoretical evolution of the surface coverages of the adsorbed reaction intermediates and the partial currents related to each elementary steps were calculated vs. the potential. An equivalent electrical circuit was proposed and the values of some of the components estimated.

引用

页码：1023 / 1028

页数：6

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