Bi₂WO₆ particles with controlled morphologies of nanosheets, microroses and microspheres were obtained by the solvothermal Sb³⁺ doping, and the Bi₂WO₆ deposition on TiO₂ nanotubes with different Sb³⁺ doping amounts influenced the solar absorption, photocurrent and photocatalytic ability. The rose-like BWO-10 photoelectrode showed more excellent photocurrent (0.24 mA/cm²), outstanding photovoltage (-0.24 V) and interface resistance than those of other samples under visible light irradiation. The BWO-10 photoelectrode also exhibited excellent photocatalytic activity, and 80.58%, 77.23%, 99.06% and 93.84% of rhodamine B (RhB), methyl orange (MO), methylene blue (MB) dye molecules and Cr (VI) ions could be removed. The active species and photocatalytic mechanism for the pollutant treatment were explored based on the free radical capture experiments. The optimization of morphology and energy band structure was the main reason for the dramatical improvement of photocatalytic performances. The work illustrates the advance of metal ion doping in semiconductor photocatalysts, which provides the effective strategy for the preparation of photocatalysts with high photocatalytic performances in wastewater purification.

溶剂热Sb ³⁺掺杂制得的纳米片，微玫瑰和微球形貌受控的Bi ₂ WO ₆颗粒，Bi ₂ WO ₆在不同Sb ³⁺掺杂量的TiO ₂纳米管上的沉积影响了太阳光的吸收，光电流和光催化性能。能力。玫瑰状的BWO-10光电极显示出更优异的光电流（0.24 mA / cm ²），在可见光照射下具有比其他样品出色的光电压（-0.24 V）和界面电阻。BWO-10光电极也表现出优异的光催化活性，罗丹明B（RhB），甲基橙（MO），亚甲基蓝（MB）染料分子和Cr（VI）离子的80.58％，77.23％，99.06％和93.84％被删除。在自由基捕获实验的基础上，探讨了污染物的活性种类和光催化机理。形态和能带结构的优化是光催化性能显着提高的主要原因。这项工作说明了金属离子在半导体光催化剂中的掺杂进展，这为废水净化中具有高光催化性能的光催化剂的制备提供了有效的策略。