Electrooxidation of Quercetin at Polycrystalline Pt Electrode

The present paper reports cyclic voltammetry and a. c. impedance spectroscopy studies on electrooxidation of quercetin (3,3',4',5,7-pentahydroxyflavone) molecule at polycrystalline Pt electrode surface in 0.1 M sodium acetate - acetic acid buffer in 75 % methanol solution. The significance of this work is demonstrated through the application of a highly-catalytic platinum electrode, which is well-known to be capable of electrochemically oxidizing methanol under similar conditions. In addition, all impedance-derived and associated charge-transfer resistance, and capacitance parameters are discussed, especially in relation to those previously presented for oxidation of quercetin at glassy carbon electrode.