采用连续离子层吸附反应法制备ZnO/CuS异质结光催化剂,通过与木质纤维素网络(CN)偶联成功制得负载型ZnO/CuS@CN催化剂。利用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、红外光谱(FT-IR)和电化学阻抗谱(EIS)对催化剂的元素组成、微观形貌和电学性能进行表征。通过罗丹明B(RhB)评估催化剂降解有机污染物的性能。结果表明,在模拟太阳光照射60 min后,ZnO/CuS@CN对50 mg/L RhB的降解率达到84.1%。自由基捕获实验表明,·O^-₂是主要活性物质。ZnO/CuS@CN对多种有机污染物均有良好的降解效果。

ZnO/CuS heterojunction photocatalysts are prepared via the successive ionic layer adsorption reaction method,and the supported ZnO/CuS@CN catalysts are successfully prepared through coupling ZnO/CuS with cellulose network (CN).The elemental composition,micro-morphology and electrical properties of the catalysts are characterized by means of X-ray diffraction (XRD),X-ray photoelectron spectroscopy (XPS),scanning electron microscopy (SEM),infrared spectroscopy (FT-IR) and electrochemical impedance spectroscopy (EIS).The performance of the catalysts for the degradation of organic pollutants is evaluated by taking rhodamine B as the target.Results show that the degradation rate of 50 mg·L^-1 rhodamine B by ZnO/CuS@CN reaches 84.1% after having been irradiated by simulated solar for 60 minutes.Free radical trapping experiments show that ·O^-₂ is the main active matter.ZnO/CuS@CN shows good degradation effects on a variety of organic pollutants.

方华扬(1998-),男,硕士生,研究方向为生物质复合材料与水处理,huayang_fang@163.com