The 3D TiO₂ nanotube arrays (TiO₂ NTs) were prepared by the anodization of Ti meshes via adjusting the anodization voltage. The anodization voltage between 15 and 60 V could form the uniform tubular structures revolving around Ti wires, and the diameter and length increased with the increasement of voltages. The results indicated that the anatase TiO₂ NTs (30) prepared with the andization voltage of 30 V showed excellent solar photocurrent, photovoltage, interface impedance and photoelectrocatalytic (PEC) efficiencies for the removal of dye molecules and Cr(VI) heavy metal ions. The TiO₂ NTs (30) sample with the average diameter of 70 nm and thickness of 4.56 μm showed photocurrent density of 1.63 mA/cm², photovoltage of −0.36 V/cm² and removal efficiencies of 71.31%, 51.39%, 98.07% and 48.26% for the PEC removal of methyl orange (MO), Rhodamine B (RhB), methyl blue (MB) and Cr(VI), respectively. The excellent photoelectrochemical propery of TiO₂ NTs (30) could be attributed to the effective pollutant adsorption and carrier transportation. This flexible photoelectrode would cause intense attention in the applications of solar cells, pollutant degradation, photolysis of water, and gas sensor.

通过调节阳极氧化电压，对钛网进行阳极氧化，制备出3D TiO ₂纳米管阵列（TiO ₂ NTs）。15至60 V的阳极氧化电压可形成围绕Ti丝旋转的均匀管状结构，其直径和长度随电压的增加而增加。结果表明，以30 V的安定电压制备的锐钛矿型TiO ₂ NTs（30）在去除染料分子和Cr（VI）重金属离子方面显示出优异的太阳光电流，光电压，界面阻抗和光电催化（PEC）效率。平均直径为70 nm，厚度为4.56μm的TiO ₂ NTs（30）样品的光电流密度为1.63 mA / cm ²，-0.36 V / cm ^2的光电压和PEC去除甲基橙（MO），若丹明B（RhB），甲基蓝（MB）和Cr（VI）的去除效率分别为71.31％，51.39％，98.07％和48.26％ ）， 分别。TiO ₂ NTs（30）的优异的光电化学性能可归因于有效的污染物吸附和载流子传输。这种柔性光电极将在太阳能电池的应用，污染物降解，水的光解和气体传感器方面引起广泛关注。