ACTIVATION OF A GOLD ELECTRODE FOR THE OXIDATION OF L-ASCORBIC-ACID -ADSORBED SUBSTRATE AS A CATALYST

Authors
ANDO I CHOFUKU H UJIMOTO K KURIHARA H
Citation
I. Ando et al., ACTIVATION OF A GOLD ELECTRODE FOR THE OXIDATION OF L-ASCORBIC-ACID -ADSORBED SUBSTRATE AS A CATALYST, Bulletin of the Chemical Society of Japan, 70(9), 1997, pp. 2187-2192
Citations number
24
Categorie Soggetti
Chemistry
Journal title
Bulletin of the Chemical Society of Japan → ACNP
ISSN journal
00092673
Volume
70
Issue
9
Year of publication
1997
Pages
2187 - 2192
Database
ISI
SICI code
0009-2673(1997)70:9<2187:AOAGEF>2.0.ZU;2-Y
Abstract
The simple electrochemical activation of a gold electrode for the oxid ation of L-ascorbic acid was examined. A polycrystalline gold electrod e was activated for the oxidation of L-ascorbic acid by positive sweep s within a narrow potential range in a sample solution. The activation mechanism was investigated by voltammetry and in situ electrochemical STM. The activation is ascribed to the coordinative adsorption of L-a scorbic acid on the gold electrode, where it behaves as a catalyst for the oxidation of L-ascorbic acid in bulk.