二甘醇在活性氧化镍电极上的电催化氧化

ctive nickel-oxide electrodes prepared by electrochemical oxidation-reduction exhibit electro-catalytic activity for the oxidation of diethylene glycol in alkaline medium. Atomic force microscopy (AFM), chronoamperometry and cyclic voltammetry are used to study the surface characterization of active nickel-oxidation electrode and electrochemical performance toward oxidation of diethylene glycol. The results show that nickel-oxide hydroxide layer formed at the surface of electrode behaves as an efficient electro-catalyst for the oxidation of diethylene glycol in alkaline medium via NiOOH species. A plausible mechanism is proposed for electro-catalytic oxidation of diethylene glycol at this electrode. Moreover, the effects of various parameters such as number of activation cycles, potential scan rates, diethylene glycol concentration and medium temperature on the electro-oxidation of diethylene glycol are investigated.