采用阳极氧化法制备了TiO₂纳米管阵列，以简便的水热法合成了纳米ZnFe₂O₄体系（ZFO），并通过电沉积法制备了不同负载量的ZFO/TNAs，利用SEM、Zeta-potential、EIS、光电流和粒径分布对其进行表征。以亚甲基蓝（MB）为目标污染物，考察了电沉积电压、沉积时间和煅烧温度对降解效果的影响。结果表明，电沉积电压和时间对光催化剂催化性能有重要影响，最优条件下制备的光催化剂在120 min对MB的降解率达到98%。5次循环降解实验对MB的降解均在95%以上，并探讨了光催化降解过程中的主要反应活性物质。

TiO₂ nanotube arrays (TNAs) are prepared by anodization method,and nano-ZnFe₂O₄ system (ZFO) is synthesized by simple hydrothermal method,which are both used to prepare ZFO/TNAs photocatalyst with different loadings via electrodeposition method.ZFO/TNAs are characterized with SEM,Zeta-potential,EIS,photocurrent and particle size distribution.Taking methylene blue (MB) as target pollutant,the influence of electrodeposition voltage,deposition time and calcination temperature on the degradation effect of MB by the prepared ZFO/TNAs is studied.It is shown that the electrodeposition voltage and time have an important impact on the catalytic performance of the photocatalyst.The photocatalyst prepared under the optimal conditions leads to a degradation rate of 98% for MB in 120 minutes,over which the degradation rates of MB in five cycles of degradation experiments exceed 95%.Main reactive substances in the photocatalytic degradation process are discussed.

张亚杰(1996-),男,硕士研究生,研究方向为TiO₂光催化,1768376644@qq.com