SERS investigation on the dissociation of methanol on a roughened Pt electrode in nonaqueous system

Citation
Ra. Gu et al., SERS investigation on the dissociation of methanol on a roughened Pt electrode in nonaqueous system, ACT CHIM S, 59(3), 2001, pp. 356-359
Citations number
13
Language
CHINESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
ACTA CHIMICA SINICA
ISSN journal
0567-7351 → ACNP
Volume
59
Issue
3
Year of publication
2001
Pages
356 - 359
Database
ISI
SICI code
0567-7351(2001)59:3<356:SIOTDO>2.0.ZU;2-J
Abstract
By utilizing SERS (Surface - enhanced Raman Scattering) technique and a con focal microprobe Raman system, the dissociation of methanol on a roughened platinum electrode in nonaqueous system was investigated. It is found that upon the dissociation of methanol on a roughened platinum electrode, carbon monoxide exists on the surface as the poisoning intermediate. At relative negative potentials, PI may coadsorb with CO on the electrode surface, and thus influence the spectral feature of CO signal. Positive movement of the potential, the variation of nu (pt-C) can be explained by the electrochemic al Stark effect while the change of nu (C-O) can be interpreted by the comb ination of the electrochemical Stark effect and the dipole - dipole couplin g effect.