采用一步水热法制备了硫化铋/钨酸铋/碳纳米管（Bi₂S₃/Bi₂WO₆/CNTs）三元复合材料，并通过XRD、SEM、TEM、XPS等手段对材料进行了表征。结果表明，当Bi₂S₃与Bi₂WO₆摩尔比为1∶1、水热处理时间为12 h时，复合材料表现出良好的光催化活性，即在90 min内对盐酸四环素（TCH）的光催化降解效率为92%。当复合材料循环使用3次后，催化效率仅略有下降，循环稳定性良好。

Bi₂S₃/Bi₂WO₆/CNTs composites are prepared through one-step hydrothermal method, and well characterized by means of XRD, SEM, TEM, XPS, FT-IR, etc.The composites are used to degrade tetracycline hydrochloride (TCH) under visible light.It is found that the composites show good photocatalytic activity when the mole ratio of Bi₂S₃ to Bi₂WO₆ is 1:1 and the hydrothermal treatment spends 12 h.Over the composites, the degradation of TCH reaches 92% within 90 minutes.After the composites have been recycled for three times, the catalytic efficiency only slightly decreases, representing a good cycle stability.

刘文杰(1980-),男,博士,副教授,研究方向为黏土、碳及其复合材料的表面修饰及应用研究,wjliu@cczu.edu.cn