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    A study of the electro-catalytic oxidation of methanol on a cobalt hydroxide modified glassy carbon electrode

    , Article Electrochimica Acta ; Volume 48, Issue 23 , 2003 , Pages 3423-3429 ; 00134686 (ISSN) Jafarian, M ; Mahjani, M. G ; Heli, H ; Gobal, F ; Khajehsharifi, H ; Hamedi, M. H ; Sharif University of Technology
    2003
    Abstract
    Cobalt hydroxide modified glassy carbon electrodes (CHM/GC) prepared by the anodic deposition in presence of tartrate ions have been used for the electro-catalytic oxidation of methanol in alkaline solutions where the methods of cyclic voltammetery (CV), chronoamperometry (CA) and impedance spectroscopy (IS) have been employed. In CV studies, in the presence of methanol the peak current of the oxidation of cobalt hydroxide increase is followed by a decrease in the corresponding cathodic current. This suggests that the oxidation of methanol is being catalysed through the mediated electron transfer across the cobalt hydroxide layer comprising of cobalt ions of various valence states. A...