VOLTAMMETRIC AND PHOTOELECTRON SPECTRAL ELUCIDATION OF THE ELECTROCATALYTIC OXIDATION OF HYDROGEN-PEROXIDE AT SCREEN-PRINTED CARBON ELECTRODES CHEMICALLY-MODIFIED WITH COBALT PHTHALOCYANINE

被引：33
|
作者：
GILMARTIN, MAT [1 ]
EWEN, RJ [1 ]
HART, JP [1 ]
HONEYBOURNE, CL [1 ]
机构：
[1] UNIV W ENGLAND,BRISTOL BS16 1QY,AVON,ENGLAND
来源：
ELECTROANALYSIS | 1995年 / 7卷 / 06期
关键词：
HYDROGEN PEROXIDE; COBALT PHTHALOCYANINE; SCREEN-PRINTED CARBON ELECTRODES; ELECTROCATALYSIS; VOLTAMMETRY; X-RAY PHOTOELECTRON SPECTROSCOPY;
D O I：
10.1002/elan.1140070608
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The interplaying mechanisms involved in the electrocatalytic oxidation of hydrogen peroxide (H2O2) have been studied using cyclic and differential-pulse voltammetry and X-ray photoelectron spectroscopy (XPS). Cobalt phthalocyanine (CoPC) modified screen-printed carbon electrodes (SPCEs) were used as base transducers in the voltammetric studies, and for XPS experiments a mixture of the printing ink containing CoPC was coated onto a steel stub. These investigations have shown that CoPC is initially in the Co2+ oxidation state, and that in plain supporting electrolytes it is subsequently electrochemically oxidized to Co3+. A postulated sequence of events for the mediated oxidation of H2O2 at CoPC-SPCEs has been derived from the XPS and voltammetric data generated.
引用
收藏
页码：547 / 555
页数：9
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