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

被引：38
|
作者：
FELIU, JM
LLORCA, MJ
GOMEZ, R
ALDAZ, A
机构：
[1] Departament de Química Física, Universitat d'Alacant, 03080 Alacant
来源：
SURFACE SCIENCE | 1993年 / 297卷 / 02期
关键词：
D O I：
10.1016/0039-6028(93)90265-L
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 behaviour of irreversibly adsorbed tellurium on the three platinum basal planes has been studied. It has been shown that there exists a surface redox process on both Pt(111) and Pt(100) electrodes which involves 4 electrons per adatom species. This process leads to the formation of oxygenated tellurium adspecies that remain stable on the surface. For both Pt(111) and Pt(100) electrodes adatom desorption takes place at higher potential values than those corresponding to the surface redox process. However, in the case of Pt(110) electrodes the first oxidation process leads to the dissolution of the adlayer.
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页码：209 / 222
页数：14
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