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

L. Proença, M. I.S. Lopes, I. Fonseca, A. Rodes, R. Gómez, A. Aldaz

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7 Citations (Scopus)

Abstract

The electrooxidation of D-sorbitol on Pt(100), Pt(111), 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. Long 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-δ-lactone and CO2 were identified as the main soluble reaction products.

Original languageEnglish
Pages (from-to)1163-1171
Number of pages9
JournalElectrochimica Acta
Volume44
Issue number6-7
DOIs
Publication statusPublished - 1 Nov 1998
Externally publishedYes

Keywords

  • D-Sorbitol
  • Electrooxidation
  • FTIR spectroscopy
  • Platinum
  • Single crystal

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