ASCORBIC-ACID OXIDATION AT POLYPYRROLE-COATED ELECTRODES

被引：117

作者：

LYONS, MEG ^{[1
]}

BREEN, W ^{[1
]}

CASSIDY, J ^{[1
]}

机构：

[1] DUBLIN INST TECHNOL,DEPT CHEM,DUBLIN 8,IRELAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 01期

关键词：

D O I：

10.1039/ft9918700115

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrooxidation of ascorbic acid is examined at polypyrrole electrodes doped with chloride and dodecylbenzene sulphonate ion. Both the kinetics of oxidation and the reproducibility of the electrochemical response are found to be enhanced at the polymer-modified electrode compared to that at an unmodified metal electrode. Kinetic data for ascorbate oxidation at the polymer-modified electrodes is evaluated and rationalised in terms of specific mechanistic sequences. The use of polypyrrole-based electrodes as active components in an amperometric chemical sensor for ascorbate is evaluated.

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页码：115 / 123

页数：9

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