A COMPARATIVE VOLTAMMETRIC STUDY OF THE IR-VERTICAL-BAR-H2SO4 AND IR-VERTICAL-BAR-HCLO4 AQUEOUS INTERFACES

Authors
FONSECA ITE LOPES MI PORTELA MTC
Citation
Ite. Fonseca et al., A COMPARATIVE VOLTAMMETRIC STUDY OF THE IR-VERTICAL-BAR-H2SO4 AND IR-VERTICAL-BAR-HCLO4 AQUEOUS INTERFACES, Journal of electroanalytical chemistry [1992], 415(1-2), 1996, pp. 89-96
Citations number
61
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
415
Issue
1-2
Year of publication
1996
Pages
89 - 96
Database
ISI
SICI code
Abstract
We have studied Ir electrodes in H2SO4 and HClO4 aqueous solutions by cyclic voltammetry between the hydrogen evolution region and the oxyge n evolution region. Special attention has been given to the prepeak be tween the double-layer region and the main oxidation peak. The influen ce of several parameters, particularly the nature of the electrolyte, on these two peaks was studied. A mechanism that accounts for the prep eak and for the role played by the anions is proposed.