THE ROLE OF SURFACE CRYSTALLINE HETEROGENEITIES IN THE ELECTROOXIDATION OF CARBON-MONOXIDE ADSORBED ON RH(111) ELECTRODES IN SULFURIC-ACID-SOLUTIONS

Authors
GOMEZ R ORTS JM FELIU JM CLAVILIER J KLEIN LH
Citation
R. Gomez et al., THE ROLE OF SURFACE CRYSTALLINE HETEROGENEITIES IN THE ELECTROOXIDATION OF CARBON-MONOXIDE ADSORBED ON RH(111) ELECTRODES IN SULFURIC-ACID-SOLUTIONS, Journal of electroanalytical chemistry [1992], 432(1-2), 1997, pp. 1-5
Citations number
19
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
432
Issue
1-2
Year of publication
1997
Pages
1 - 5
Database
ISI
SICI code
Abstract
The electrooxidation of CO saturated adlayers has been studied on thre e different rhodium electrodes: Rh(111), Rh(554) and electrochemically disordered Rh(111). It has been found that the kinetics of the CO str ipping process is sensitive to the long-range order of the (111) domai ns. The more ordered the surface, the slower the oxidation proceeds. T his provides a criterion for the assessment of the surface quality. It is noteworthy that the Rh(111) blank voltammogram does not show signi ficant changes upon structural modification of the electrode surface: the voltammetric profiles for Rh(111) and Rh(554) in 0.5 M sulphuric a cid are virtually identical. (C) 1997 Elsevier Science S.A.