ZnO/CuO修饰多孔Ti电极的制备及其电化学性能

Preparation and electrochemical performance of porous Ti/ZnO/CuO modified electrode

为了获得电化学性能良好的修饰电极,以多孔Ti为基体,通过水热法制备了一种以ZnO/CuO为复合物修饰的多孔Ti/ZnO/CuO电极,并利用扫描电子显微镜(SEM)、X射线衍射(XRD)、X射线能谱分析(EDS)分别对电极的形貌和元素分布进行了定性表征。利用电化学工作站分别对多孔Ti/ZnO、多孔Ti/CuO和多孔Ti/ZnO/CuO修饰电极进行了循环伏安测试(CV)和线性扫描伏安测试(LSV)。结果表明,当CuCl_(2)·2H_(2)O为0.1mol/L、醋酸锌为0.01mol/L,乙酸锌与六次甲基四胺均为0.1mol/L时,ZnO纳米棒、CuO薄膜能够在孔径为1μm的多孔Ti表面均匀分布。同时,与单独的多孔Ti/ZnO、多孔Ti/CuO修饰电极相比,多孔Ti/ZnO/CuO修饰电极在有色聚酯醇解液中具有较强的电催化活性,且电催化性能明显。

In order to obtain modified electrode with good electrochemical performance,porous Ti/ZnO/CuO electrode modified with ZnO/CuO as a composite was prepared by hydrothermal method with porous Ti as the matrix.The scanning electron microscope(SEM),X-ray diffraction(XRD) and X-ray energy spectrum analysis(EDS) were used to qualitatively characterize the morphology and element distribution of the electrode.Cyclic voltammetry(CV) and linear sweep voltammetry(LSV) were carried out on porous Ti/ZnO,porous Ti/CuO,and porous Ti/ZnO/CuO modified electrodes using an electrochemical workstation.The results showed that:when CuCl_(2)·2 H_(2)O was 0.1 mol/L,zinc acetate was 0.01 mol/L,zinc acetate and hexamethylene tetramine were both 0.1 mol/L,ZnO nanorods and CuO films can be evenly distributed on the porous Ti surface with the pore size of 1μm.At the same time,compared with single porous Ti/ZnO and porous Ti/CuO modified electrode,the porous Ti/ZnO/CuO modified electrode had stronger electrocatalytic activity in the colored polyester alcoholysis solution,and the electrocatalytic performance was obvious.