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Electrodeposition of Catechol on Glassy Carbon Electrode and Its Electrocatalytic Activity Toward NADH Oxidation
Author(s) -
Maleki Abbas,
Nematollahi Davood,
Clausmeyer Jan,
Henig Jörg,
Plumeré Nicolas,
Schuhmann Wolfgang
Publication year - 2012
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.201200251
Subject(s) - catechol , glassy carbon , cyclic voltammetry , redox , electrochemistry , benzoquinone , quinone , hydroquinone , electrode , chemistry , inorganic chemistry , carbon fibers , catalysis , electrocatalyst , materials science , organic chemistry , composite material , composite number
Catechol can be oxidized electrochemically to its corresponding o ‐benzoquinone. The electrogenerated quinone can be deposited by cycling the potential at the surface of glassy carbon electrodes. We have studied the electrochemical features of films derived from catechol by cyclic voltammetry. The electrodeposited film shows stable reversible redox response, dependent on pH as anticipated for quinone/catechol functionalities. Glassy carbon electrodes covered with a film derived from catechol exhibit catalytic activity in the electrooxidation of NADH at a low potential. The catalytic current is proportional to the concentration of NADH over the range 0.02–0.34 mM.