Sensitive electrochemical detection of oxalate at a positively charged boron-doped diamond surface

Takeshi Kondo, Yu Niwano, Akira Tamura, Tribidasari A. Ivandini, Yasuaki Einaga, Donald A. Tryk, Akira Fujishima, Takeshi Kawai

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Allyltriethylammonium bromide (ATAB) was covalently attached to the surface of hydrogen-terminated boron-doped diamond (BDD) thin films using a photochemical method to fabricate positively charged electrode surfaces. The anodic current for oxalate oxidation both in cyclic voltammetry and in flow-injection analysis with amperometry was found to be up to two times larger at ATAB-modified BDD (ATAB-BDD) than at an unmodified BDD electrode, which may be based on the electrostatic interaction between the oxalate anion and the electrode surface. In addition, the stability of the electrochemical detection of oxalate was improved at the ATAB-BDD electrode compared to the unmodified electrode.

Original languageEnglish
Pages (from-to)1556-1564
Number of pages9
JournalElectroanalysis
Volume20
Issue number14
DOIs
Publication statusPublished - 2008 Jul 1

Keywords

  • Allyltriethylammonium bromide
  • Boron-doped diamond electrode
  • Electrochemical detection
  • Oxalate
  • Surface modification

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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  • Cite this

    Kondo, T., Niwano, Y., Tamura, A., Ivandini, T. A., Einaga, Y., Tryk, D. A., Fujishima, A., & Kawai, T. (2008). Sensitive electrochemical detection of oxalate at a positively charged boron-doped diamond surface. Electroanalysis, 20(14), 1556-1564. https://doi.org/10.1002/elan.200804212