以二水合醋酸镉、硫代乙酰胺、乙二胺为原料,采用水热法合成了CdS纳米颗粒;以三水合硝酸铜、均苯三甲酸为原料,采用溶剂热法合成了CuMOF。通过对2种晶体超声分散、混合制备CuMOF/CdS复合光催化剂,利用XRD、SEM、UV-Vis DRS及FT-IR分析方法对合成的CuMOF/CdS复合光催化剂进行表征。以亚甲基蓝为模拟的待降解有机污染物,考察了CuMOF复合量对光催化降解效率的影响。结果表明,当CuMOF与CdS质量比为1∶1时,CuMOF/CdS光催化剂对亚甲基蓝(MB)溶液表现了最佳的光催化降解效果;与单纯CdS和CuMOF晶体相比,其在相同条件下对MB的光催化降解效率分别提高了502%和287%。

CuMOF and CdS crystals are synthesized by solvothermal and hydrothermal methods,respectively.They are dispersed and mixed under ultrasonic oscillation to prepare CuMOF/CdS composite photocatalyst that is characterized by means of XRD,SEM,UV-Vis DRS and FT-IR.The effect of the mass fraction of CuMOF on photocatalytic degradation efficiency of the catalyst is investigated through using methylene blue as a simulated organic pollutant to be degraded.Results indicate that CuMOF/CdS photocatalyst exhibits the best photocatalytic degradation efficiency for methylene blue solution when the mass fraction ratio of CuMOF to CdS is 1∶1.Under the same conditions,the photocatalytic degradation rate of CuMOF/CdS catalyst for methylene blue is 502% and 287% higher than that of CdS crystal or CuMOF crystal,respectively.

杨烨民(1998-),男,硕士研究生,主要从事无机功能材料的研究,1601026068@qq.com。