ELECTROCHEMICAL-BEHAVIOR OF IRREVERSIBLY ADSORBED SELENIUM DOSED FROM SOLUTION ON PT(H,K,L) SINGLE-CRYSTAL ELECTRODES IN SULFURIC AND PERCHLORIC-ACID MEDIA

被引：48
作者：
FELIU, JM
GOMEZ, R
LLORCA, MJ
ALDAZ, A
机构：
[1] Departament de Química Física, Universit:at d'Alacant, Apartat 99
来源：
SURFACE SCIENCE | 1993年 / 289卷 / 1-2期
关键词：
D O I：
10.1016/0039-6028(93)90894-P
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The voltammetric behavior of irreversibly adsorbed selenium on platinum basal planes and Pt(332) and Pt(755) stepped surfaces has been studied. It has been shown that there exists a surface redox process on Pt(111) which involves 4 electrons per adatom adspecies. This process does not involve adatom desorption and leads to the formation of oxygenated selenium adspecies. Nevertheless, for other platinum orientations selenium adlayers oxidatively dissolve without evidence of Se(IV)ads stabilization.
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页码：152 / 162
页数：11
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