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Electrocatalytic Oxidation of Catechol at Multi-Walled Carbon Nanotubes Modified Electrode

✍ Scribed by Zhiai Xu; Xu Chen; Xiaohu Qu; Shaojun Dong

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
81 KB
Volume
16
Category
Article
ISSN
1040-0397

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✦ Synopsis

Abstract

In 0.05 mol/L phosphate buffer solution (pH 7.0), carbon nanotubes modified electrode exhibits rapid response, strong catalytic activity with high stability toward the electrochemical oxidation of catechol. The electrochemical behavior of catechol on both the multi‐walled and single‐walled carbon nanotubes modified electrode was investigated. The experimental conditions, such as pH of the solution and scan rate were optimized. The currents (measured by constant potential amperometry) increase linearly with the concentrations of catechol in the range of 2.0×10^−5^–1.2×10^−3^ mol/L. Moreover, at the multi‐walled carbon nanotubes modified electrode the electrochemical responses of catechol and ascorbic acid can be separated clearly.

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