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Electrocatalytic Oxidation of Ascorbic Acid at a Reduced C 60 ‐[dimethyl‐(β‐cyclodextrin)] 2 and Nafion Chemically Modified Electrode
Author(s) -
Wei Min,
Li Meixian,
Li Nanqiang,
Gu Zhennan,
Zhou Xihuang
Publication year - 2002
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200201)14:2<135::aid-elan135>3.0.co;2-m
Subject(s) - ascorbic acid , nafion , electrode , overpotential , chemistry , aqueous solution , electrochemistry , inorganic chemistry , electrocatalyst , chemically modified electrode , nuclear chemistry , working electrode , organic chemistry , food science
A C 60 ‐[dimethyl‐(β‐cyclodextrin)] 2 and Nafion chemically modified electrode (CME) has been prepared by solution cast on a gold electrode. The CME can be electroreduced irreversibly in KOH aqueous solution. XPS and SEM were used to characterize the CME and the reduced CME. The reduced CME shows high electrocatalytic activity toward ascorbic acid oxidation, with an overpotential ca. 350 mV less than that of the bare gold electrode. The reduced CME can also separate the electrochemical responses of ascorbic acid and dopamine.