| Abstract: | The electrochemical quartz crystal impedance (EQCI) technique has been applied to investigate glucose oxidation on bare and Ni(OH)2‐modified Au electrodes in 0.2 mol L?1 KOH aqueous solution. The EQCI responses suggest different contributions of H+‐release and OH?‐incorporation reactions of the Ni(OH)2‐film redox process in 0.2 mol L?1 aqueous KOH at different potentials. Glucose adsorption on the Ni(OH)2‐modified Au electrode was studied. A mechanism for potential cyclic redox process of glucose at Ni(OH)2‐modified Au electrode is suggested, mainly based on a comparative EQCI analysis with direct glucose oxidation on bare gold and glucose ad‐/desorption on Ni(OH)2 film. |
