Electrocatalytic activity of a cobalt hexacyanoferrate modified glassy carbon electrode toward ascorbic acid oxidation

被引:127
|
作者
Cai, CX [1 ]
Xue, KH [1 ]
Xu, SM [1 ]
机构
[1] Nanjing Normal Univ, Dept Chem, Nanjing 210097, Peoples R China
来源
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2000年 / 486卷 / 02期
关键词
electrocatalysis; chemically modified electrode; ascorbic acid; cobalt hexacyanoferrate;
D O I
10.1016/S0022-0728(00)00114-5
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A cobalt hexacyanoferrate (CoHCF) modified glassy carbon (CoHCF/GC) electrode was prepared electrochemically. The voltammetric responses of CoHCF are stable and the electrochemical behaviour is related to the concentrations of supporting electrolyte and counterions. The CoHCF/GC electrode shows electrocatalytic activity toward the oxidation of ascorbic acid in phosphate buffer solution. The electrocatalytic rate constant of the CoHCF/GC electrode for the oxidation of ascorbic acid is determined using rotating disk electrode measurements. (C) 2000 Elsevier Science S.A. All rights reserved.
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页码:111 / 118
页数:8
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