Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 13, Issue 6, Pages 927-934Publisher
SPRINGER
DOI: 10.1007/s10008-008-0626-z
Keywords
Carbon paste electrode; Ortho-aminophenol; Electropolymerization; Methanol; Electrocatalysis; Cyclic voltammetry
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In this work, a modified carbon paste electrode consisting of Nickel dispersed in poly(ortho-aminophenol) was used for electrocatalytic oxidation of methanol in alkaline solution. A carbon paste electrode bulk modified with o-aminophenol was used for polymer preparation by cyclic voltammetry method; then, Ni(II) ions were incorporated by immersion of the modified electrode in 1 M Ni(II) ion solution at open circuit. The electrochemical characterization of this modified electrode exhibits stable redox behavior of the Ni(III)-Ni(II) couple. Electrocatalytic oxidation of methanol on the surface of modified electrode was investigated with cyclic voltammetry and chronoamperometry methods, and the dependence of the oxidation current and shape of cyclic voltammograms on methanol concentration and scan rate were discussed. Also, long-term stability of modified electrode for electrocatalytic oxidation of methanol was investigated.
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