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

研究成果: Article査読

25 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1556-1564
ページ数9
ジャーナルElectroanalysis
20
14
DOI
出版ステータスPublished - 2008 7 1

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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