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

Authors
FELIU JM GOMEZ R LLORCA MJ ALDAZ A
Citation
Jm. Feliu et al., ELECTROCHEMICAL-BEHAVIOR OF IRREVERSIBLY ADSORBED SELENIUM DOSED FROMSOLUTION ON PT(H,K,L) SINGLE-CRYSTAL ELECTRODES IN SULFURIC AND PERCHLORIC-ACID MEDIA, Surface science, 289(1-2), 1993, pp. 152-162
Citations number
20
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
289
Issue
1-2
Year of publication
1993
Pages
152 - 162
Database
ISI
SICI code
0039-6028(1993)289:1-2<152:EOIASD>2.0.ZU;2-H
Abstract
The voltammetric behavior of irreversibly adsorbed selenium on platinu m basal planes and Pt(332) and Pt(755) stepped surfaces has been studi ed. It has been shown that there exists a surface redox process on Pt( 111) which involves 4 electrons per adatom adspecies. This process doe s not involve adatom desorption and leads to the formation of oxygenat ed selenium adspecies. Nevertheless, for other platinum orientations s elenium adlayers oxidatively dissolve without evidence of Se(IV)ads st abilization.