摘要
采用溶剂热法成功制备了一种BiOCl/UiO-66-NH_(2)复合光催化剂,通过X射线粉末衍射(XRD)、傅里叶红外光谱(FT-IR)、扫描电子显微镜(SEM)和N_(2)吸附-脱附比表面积分析(BET)等对其形貌、结构和光催化性能进行表征。结果表明,UiO-66-NH_(2)颗粒均匀地嵌在BiOCl的花状结构上,形成紧密接触的界面。该复合光催化剂在可见光照射下表现出优异的光催化降解罗丹明B(RhB)的性能,经可见光照射40 min可以完全去除溶液中的RhB,降解能力是纯BiOCl材料的3.53倍。光催化活性的增强归因于BiOCl和UiO-66-NH_(2)之间形成的Z型异质结,该异质结促进了光生载流子的有效分离和转移。此外,该复合光催化剂在连续4次循环中表现出良好的稳定性,对RhB的降解率仍保持在90%以上。
A BiOCl/UiO-66-NH_(2) composite photocatalyst was successfully synthesized by solvothermal method and characterized in detail for its morphology,structure,and photocatalytic performance via X-ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),and N_(2) adsorption-desorption Brunauer-Emmett-Teller(BET) analysis.The results show that the UiO-66-NH_(2) particles are uniformly embedded on the flower-like BiOCl structure,forming a close-contact interface.The composite photocatalyst exhibits excellent photocatalytic performance for the degradation of rhodamine B(RhB) under visible light irradiation.It could completely remove RhB from the solution within 40 min of visible light irradiation,and degradation ability is 3.53 times higher than that of pure BiOCl.The enhancement of photocatalytic activity is attributed to the formation of a Z-scheme heterojunction between BiOCl and UiO-66-NH_(2),which facilitated efficient separation and transfer of photogenerated charge carriers.Moreover,the composite photocatalyst exhibits excellent stability with a RhB degradation rate of over 90% after four consecutive cycles.
作者
介颖泽
王英戈
张卫珂
杨艳青
JIE Yingze;WANG Yingge;ZHANG Weike;YANG Yanqing(College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《人工晶体学报》
CAS
北大核心
2024年第8期1443-1452,共10页
Journal of Synthetic Crystals
基金
山西省自然科学基金面上项目(202203021211162)。
