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

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

doi:10.1002/elan.200804212

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

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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

32 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 language	English
Pages (from-to)	1556-1564
Number of pages	9
Journal	Electroanalysis
Volume	20
Issue number	14
DOIs	https://doi.org/10.1002/elan.200804212
Publication status	Published - Jul 2008

Keywords

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

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10.1002/elan.200804212

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title = "Sensitive electrochemical detection of oxalate at a positively charged boron-doped diamond surface",

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.",

keywords = "Allyltriethylammonium bromide, Boron-doped diamond electrode, Electrochemical detection, Oxalate, Surface modification",

author = "Takeshi Kondo and Yu Niwano and Akira Tamura and Anggraningrum, {Ivandini Tribidasari} and Yasuaki Einaga and Tryk, {Donald A.} and Akira Fujishima and Takeshi Kawai",

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T1 - Sensitive electrochemical detection of oxalate at a positively charged boron-doped diamond surface

AU - Kondo, Takeshi

AU - Niwano, Yu

AU - Tamura, Akira

AU - Anggraningrum, Ivandini Tribidasari

AU - Einaga, Yasuaki

AU - Tryk, Donald A.

AU - Fujishima, Akira

AU - Kawai, Takeshi

PY - 2008/7

Y1 - 2008/7

N2 - 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.

AB - 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.

KW - Allyltriethylammonium bromide

KW - Boron-doped diamond electrode

KW - Electrochemical detection

KW - Oxalate

KW - Surface modification

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DO - 10.1002/elan.200804212

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SP - 1556

EP - 1564

JO - Electroanalysis

JF - Electroanalysis

IS - 14

ER -

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

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Keywords

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