The electrooxidation of sulfur-containing compounds at boron-doped diamond electrode

O. Chailapakul, P. Aksharanandana, T. Frelink, Y. Einaga, A. Fujishima

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The electrooxidation of homocysteine, glutathione (GSH), 2-mercapto ethanesulfonic acid and cephalexin at boron-doped diamond (BDD) electrodes and glassy carbon (GC) electrodes was investigated by cyclic voltammetry. The oxidation of these sulfur-containing compounds exhibited well-defined irreversible responses. This preliminary study has shown that BDD has better sensitivity than GC. Concentration dependence has been studied and indicated the promise of using BDD electrodes for quantitative determination. All of the compounds displayed recognizable oxidation peaks at BDD electrodes at millimolar concentration levels. Scan rate dependence of GSH has been examined. It was shown that there was no adsorption on the surface of the BDD electrode for the low concentration.

Original languageEnglish
Pages (from-to)193-201
Number of pages9
JournalSensors and Actuators, B: Chemical
Volume80
Issue number3
DOIs
Publication statusPublished - 2001 Dec 1
Externally publishedYes

Keywords

  • 2-Mercapto ethanesulfonic acid
  • Cephalexin
  • Diamond electrodes
  • Electrochemistry
  • Glutathione
  • Homocysteine

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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