Electrochemistry of a thin cobalt(II)-heptacyanonitrosylferrate film modified glassy carbon electrode

被引：12
|
作者：
Gao, ZQ
Zhang, YM
Wang, GQ
机构：
[1] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore
[2] Luoyang Technol Inst, Lab Elect Microscopy, Luoyang, Henan, Peoples R China
[3] Yulin Normal Coll, Dept Chem, Yulin, Shanxi, Peoples R China
来源：
ANALYTICAL SCIENCES | 1998年 / 14卷 / 06期
关键词：
cobalt; heptacyanonitrosylferrate; chemically modified electrode; voltammetry; electrochemical impedance; nitrite; iron;
D O I：
10.2116/analsci.14.1053
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrochemical behavior of a cobalt(II)-heptacyanonitrosylferrate (CoHNF) film on a glassy carbon electrode has been investigated. Cyclic voltammetry shows a single electron-transfer reaction taking place at 0.51 V for the modified electrode. The ion effect of the supporting electrolyte indicates that the ion permeability in the CoHNF film is mainly determined by the hydrated radius of cation. The modified electrode catalyzes redox reactions of the Fe2+/Fe3+ couple. It also exhibits a linear potentiometric response over the range of 3x10(-5) - 1x10(-2) M NO2- with a near-Nernstian slope in an acidic medium.
引用
收藏
页码：1053 / 1058
页数：6
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