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Electrocatalytic Oxidation of Catechol at Multi‐Walled Carbon Nanotubes Modified Electrode
Author(s) -
Xu Zhiai,
Chen Xu,
Qu Xiaohu,
Dong Shaojun
Publication year - 2004
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200302843
Subject(s) - catechol , carbon nanotube , amperometry , ascorbic acid , electrochemistry , electrode , inorganic chemistry , materials science , catalysis , chemistry , chemical engineering , organic chemistry , nanotechnology , food science , engineering
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.