Ti/RuO2-SnO2-CeO2/PbO2电极的制备及其电催化性能研究

目的]通过引入新型三元过渡中间层(RuO_2-SnO_2-CeO_2)对Ti/PbO_2电极进行改性,提高电极活性及使用寿命。方法]采用溶胶凝胶法制备RuO_2-SnO_2-CeO_2,通过X射线衍射(XRD)测试表征中间层结构及物象成分,并对改性电极进行循环伏安(CV)、电化学阻抗(EIS)、电催化降解4-氯酚及寿命加速等电化学性能测试,研究电极性能。结果]RuO_2-SnO_2-CeO_2可以形成稳定的固溶体氧化物,对基底起到保护作用,电极寿命延长超过5.5倍,且具有更高的电催化活性。结论]RuO_2-SnO_2-CeO_2的引入,提高了电极寿命及电催化活性。

Preparation of Ti/RuO2-SnO2-CeO2/PbO2 Electrode and Its Electrocatalytic Properties

Objective]To modify the Ti/PbO2 electrode by introducing a ternary transition interlayer(RuO2 -SnO2 -CeO2) to improve its ac-tivity and stability. Method] The ternary intermediate layer was prepared by sol-gel method.The structure of the middle layer was obtained by X-ray diffraction ( XRD ) .The modified electrode was examined by cyclic voltammetry ( CV ) , electrochemical impedance spectroscopy (EIS), electrocatalytic degradation of 4-chlorophenol and life-accelerated electrochemical performance tests.Result]RuO2-SnO2-CeO2 can form stable solid solution oxides and play a protective role on the substrate.The accelerated life was extended over 5.5 times and the modified electrode had more excellent electrocatalytic performance.Conclusion]The introduction of RuO2-SnO2-CeO2 as the middle layer improved the stability and electrocatalytic activity of the electrode.