编号：NMJS08586
篇名：g-C3N4/CeO2/BiOBr三相复合材料的制备及其可见光催化降解RhB性能
作者：蔡文宇 刘成宝 陈丰 钱君超 许小静 孟宪荣 陈志刚
关键词： g-C3N4 CeO2 BiOBr 光催化活性
机构： 苏州科技大学材料科学与工程学院江苏省环境功能材料重点实验室 苏州科技大学江苏水处理技术与材料协同创新中心 江苏省陶瓷研究所有限公司 苏州市环境科学研究所
摘要： Porous layered g-C3N4 was selected as base material via direct calcination method to synthesize g-C3N4/CeO2/BiOBr ternary composite photocatalytic materials with heterogeneous structure,while CeO2/BiOBr composites were introduced by ultrasonic stirring method.The composition,structure and optical properties of g-C3N4/CeO2/BiOBr were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,X-ray photoelectron spectroscopy,UV-Vis DRS and photoluminescence analysis,and so on.The results show that the g-C3N4/CeO2/BiOBr has sandwich layered stacking structure,good interface contact structure and excellent light response performance due to the uniform phase distribution and high degree of crystallization.When the molar fraction of Ce∶Bi is 1∶1 and the mass fraction of g-C3N4 is 15%,the obtained three-phase composite shows the highest photocatalytic degradation property for RhB.The degradation rate for RhB is 99%,which is 86 times that of pure CeO2 and 3 times that of pure BiOBr.In addition,the composite has good stability with the RhB degradation efficiency of 89%after four cycles.
