ON THE RATE OF HYDROGEN AND IODINE ADSORPTION ON POLYCRYSTALLINE PT AND PT(111)

Authors
OELGEKLAUS R ROSE J BALTRUSCHAT H
Citation
R. Oelgeklaus et al., ON THE RATE OF HYDROGEN AND IODINE ADSORPTION ON POLYCRYSTALLINE PT AND PT(111), Journal of electroanalytical chemistry [1992], 376(1-2), 1994, pp. 127-133
Citations number
14
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
376
Issue
1-2
Year of publication
1994
Pages
127 - 133
Database
ISI
SICI code
Abstract
Impedance measurements were taken at a Pt(111) and a polycrystalline e lectrode in alkaline electrolyte. The effect of iodide in the solution was also studied. The rate of iodide adsorption was too fast to be de termined. In iodine-free solution, the rate of hydrogen adsorption is higher on Pt(111) than on the polycrystalline electrode by one order o f magnitude. Whereas iodide does not influence the rate of hydrogen ad sorption in the case of the polycrystalline electrode, it causes a mar ked decrease in this rate on Pt(111) even at potentials where only tra ces of iodine are adsorbed.