Selective and quantitative removal of Pd films from Pt substrates by adsorbed-iodine-catalyzed anodic stripping

被引：7

作者：

Lafferty, EA ^{[1
]}

Kim, YG ^{[1
]}

Soriaga, MP ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

来源：

ELECTROCHIMICA ACTA | 1998年 / 44卷 / 6-7期

基金：

美国国家科学基金会;

关键词：

ultrathin Pd films; adsorbate-induced corrosion; adsorbate-induced anodic stripping; Pd on Pt films;

D O I：

10.1016/S0013-4686(98)00207-2

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

It is known that a single chemisorbed layer of iodine catalyzes, at ambient temperatures, the anodic dissolution of palladium in aqueous sulfuric acid solutions. In this paper, we show that this unique type of dissolution can be used for the selective and quantitative anodic stripping of Pd films electrodeposited on Pt substrates. This method can also be used for Pd-coverage determinations, a major advantage if catalysis-induced coverage changes are to be monitored. Experimental measurements were based upon thin-layer electrochemistry and X-ray photoelectron spectroscopy. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1031 / 1036

页数：6

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