On the oxidation of D-sorbitol on platinum single crystal electrodes: a voltammetric and in situ FTIRS study

Authors
Proenca, L Lopes, MIS Fonseca, I Rodes, A Gomez, R Aldaz, A
Citation
L. Proenca et al., On the oxidation of D-sorbitol on platinum single crystal electrodes: a voltammetric and in situ FTIRS study, ELECTR ACT, 44(6-7), 1998, pp. 1163-1171
Citations number
18
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHIMICA ACTA
ISSN journal
00134686 → ACNP
Volume
44
Issue
6-7
Year of publication
1998
Pages
1163 - 1171
Database
ISI
SICI code
0013-4686(1998)44:6-7<1163:OTOODO>2.0.ZU;2-Z
Abstract
The electrooxidation of D-sorbitol on Pt(100), Pt(110), Pt(111) and stepped surfaces vicinal to the (111) pole was studied in perchloric acid medium. The reaction is markedly influenced by the crystalline surface structure. L ong range order effects of (111) terraces were also observed. Adsorbed CO ( linearly and bridge bonded to the surface, on a level which depends on the electrode surface orientation) was identified by in situ Fourier transform IR (FTIR) spectroscopy as the main poisoning species. Moreover, for Pt(111) , glucono-delta-lactone and CO2 were identified as the main soluble reactio n products. (C) 1998 Elsevier Science Ltd. All rights reserved.