KINETICS OF DISSOCIATIVE ADSORPTION OF FORMIC-ACID ON PT(100), PT(610), PT(210) AND PT(110) SINGLE-CRYSTAL ELECTRODES IN PERCHLORIC-ACID SOLUTIONS

Authors
SUN SG LIN Y LI NH MU JQ
Citation
Sg. Sun et al., KINETICS OF DISSOCIATIVE ADSORPTION OF FORMIC-ACID ON PT(100), PT(610), PT(210) AND PT(110) SINGLE-CRYSTAL ELECTRODES IN PERCHLORIC-ACID SOLUTIONS, Journal of electroanalytical chemistry [1992], 370(1-2), 1994, pp. 273-280
Citations number
25
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
370
Issue
1-2
Year of publication
1994
Pages
273 - 280
Database
ISI
SICI code
Abstract
The kinetics of dissociative adsorption of HCOOH on Pt(100), Pt(610), Pt(210) and Pt(110) single-crystal electrodes has been investigated. T he oxidation of dissociative adsorbate (DA) derived from the dissociat ive adsorption of HCOOH was used as a probe reaction together with the potential-step technique of short time windows. The quantity Q(ad) of DA produced at a given potential E(ad) and in a defined time window t (ad) of adsorption has been determined systematically. At fixed t(ad) peaked curves of Q(ad) versus E(ad) in the potential range between -0. 25 and 0.25 V/SCE have been obtained on all four electrodes. The maxim um rate of dissociative adsorption of HCOOH decreases in the order Pt( 110) > Pt(210) > Pt(610) > Pt(100).