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Catalytic oxidation of methanol on a glassy carbon electrode electrochemically modified by a conductive Ni II ‐curcumin film
Author(s) -
Ciszewski Aleksander
Publication year - 1995
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.1140071207
Subject(s) - cyclic voltammetry , methanol , glassy carbon , electrolyte , catalysis , inorganic chemistry , electrochemistry , nickel , supporting electrolyte , redox , electrode , materials science , chemistry , electrocatalyst , organic chemistry
This work focuses on the electrochemical synthesis and characterization of a conductive polymeric nickel‐curcumin film and its application for electrocatalytic oxidation of methanol in alkaline solutions. It has been found that a glassy carbon electrode modified by this film acts as a very effective catalyst for oxidation of alcohols. Electropolymerization of the nickel‐curcumin complex and oxidation of methanol have been studied by cyclic voltammetry. The described modified electrode provides a durable catalytic surface which allows the voltammetric oxidation of methanol: in 0.1 M NaOH electrolyte the resulting anodic peak is at 0.59 V (vs. SCE). Electrooxidation was not possible at bare glassy carbon electrodes, at least before the onset of the electrolyte decomposition. The mechanism of modifying the film formation has been discussed.