EFFECT OF POLYANILINE ON OXYGEN REDUCTION IN BUFFERED NEUTRAL SOLUTION

被引：21

作者：

CUI, CQ

LEE, JY

机构：

[1] Department of Chemical Engineering, National University of Singapore, Singapore, 0511

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1994年 / 367卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(93)03048-T

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical behaviour of glassy carbon/polyaniline (GC/PANI) and GC/PANI/Pt electrodes for oxygen reduction in buffered neutral aqueous solutions was investigated to determine the function of PANI in the composite electrodes. It was found that PANI exhibited little electrocatalytic activity for oxygen reduction in neutral solutions because of its poor conductivity. However, for oxygen reduction the presence of PANI in both GC/PANI and GC/PANI/Pt electrodes could inhibit the diffusion of O2 through the polymer matrix to level out the effect of non-uniform distribution of active sites so that a flat current plateau could be obtained even when the electrodes were rotated. It is concluded that PANI is a promising sensor material for the measurement of dissolved oxygen in neutral solutions despite its poor conductivity.

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页码：205 / 212

页数：8

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