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

页码：547 / 555

页数：9

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