摘要： 采用阳极氧化法制备二氧化钛纳米管（TiO₂NTs）电极基底，使用热分解方法制备了Ti/Sb-SnO₂-Ni和TiO₂NTs/Sb-SnO₂-Ni两种电极。通过扫描电镜（SEM）、X射线衍射仪（XRD）、电化学工作站等分析仪器分别研究了基底对电极表面结构、组分和电化学性能的影响。采用阳极快速寿命测试法对电极进行寿命测试，并以亚甲基蓝为模拟污染物研究了电极的电催化性能。研究结果表明，TiO₂NTs为基底可有效改善电极表面结构，从而提高电极的寿命和催化性能。相比平板钛基底，TiO₂NTs为基底电极活性层负载量增加，寿命增加了2.5倍，对亚甲基蓝的降解速率提高了1.5倍。

关键词: 二氧化钛纳米管, 电极基底, 强化寿命, 电催化性能

Abstract: Anodic oxidation method has been used for preparing titanium dioxide nano-tubes(TiO₂NTs) electrode substrates, and thermal decomposition method has been applied to the preparation of two kinds of electrodes, Ti/Sb-SnO₂-Ni and TiO₂NTs/Sb-SnO₂-Ni. The influences of substrates on electrode surface structures, components and ele-ctrochemical performances are researched by means of analytical instruments, such as scanning electron microscopy(SEM), X-ray diffraction(XRD), electrochemical techniques work-station, etc. Electrode service life tests are imple-mented by anode rapid service life testing method, and methylene blue is used as simulated pollutant for studying the electro-catalysis performances of the electrodes. The research results show that TiO₂NTs as substrates can effectively improve electrode surface structures, so as to improve the service life and the catalysis performances of electrodes. Com-pared with the plate titanium substrates, the electrode active layer loading capacity of TiO₂NTs as substrates is incr-eased, its service time is increased by 2.5 times, and the degradation rate of methylene blue is increased by 1.5 times.

Key words: titanium dioxide nano-tubes, electrode substrate, reinforced service life, electrocatalytic performance

中图分类号: 

• X703.1