Investigation of the Electrochemical and Electrocatalytic Behavior of Single-Wall Carbon Nanotube Film on a Glassy Carbon Electrode

The electrochemical behavior of a film of single-wall carbon nanotubes (SWNTs) functionalized with carboxylic acid groups was studied extensively on a glassy carbon (GC) electrode. One stable couple corresponding to the redox of the carboxylic acid group, which was supported by XPS and IR experiment...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2001-03, Vol.73 (5), p.915-920
Main Authors: Luo, Hongxia, Shi, Zujin, Li, Nanqiang, Gu, Zhennan, Zhuang, Qiankun
Format: Article
Language:English
Subjects:
Acids
Ascorbic Acid - chemistry
Carbon
Catalysis
Chemistry
Dopamine - chemistry
Electrochemistry
Electrochemistry - methods
Electrodes
Electrodes: preparations and properties
Epinephrine - chemistry
Exact sciences and technology
General and physical chemistry
Molecules
Other electrodes
Oxidation-Reduction
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Summary:The electrochemical behavior of a film of single-wall carbon nanotubes (SWNTs) functionalized with carboxylic acid groups was studied extensively on a glassy carbon (GC) electrode. One stable couple corresponding to the redox of the carboxylic acid group, which was supported by XPS and IR experiments, was observed. The electrode process involved four electrons, while the rate-determining step was a one-electron reduction. The SWNT film-modified electrode showed favorable electrocatalytic behavior toward the oxidation of biomolecules such as dopamine, epinephrine, and ascorbic acid.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac000967l