碳量子点修饰BiOBr/ZnO的制备及降解污染物研究
Preparation of Carbon Quantum Dots(CQDs)Modified BiOBr/ZnO for Degradation of Water Pollutants
宋月宇1
作者信息
- 1. 太原学院建筑与环境工程系,山西 太原 030000
- 折叠
摘要
采用溶剂热法合成了CQDs/BiOBr/ZnO异质结光催化剂.以氙灯为光源,研究制备催化剂对亚甲基蓝和罗丹明B的降解性能.结果表明,CQDs的修饰和BiOBr/ZnO异质结的形成都会提升ZnO的光催化降解性能.在相同条件下,CQDs/BiOBr/ZnO在 60 分钟内对亚甲基蓝的降解效率为 88%,降解速率常数分别是BiOBr/ZnO和纯ZnO的 1.13 倍和 3.78 倍,经过 5 次重复试验后,催化剂仍具有良好的稳定性.
Abstract
CQDs/BiOBr/ZnO heterojunction photocatalysts were synthesized by solvothermal method.Using a xenon lamp as the light source,the degradation performance of the prepared catalyst for methylene blue and Rhodamine B were studied.The results indicated that the doping of CQDs and the formation of BiOBr/ZnO heterojunctions can enhance the photocatalytic degradation performance of ZnO.Under the same conditions,the degradation efficiency of CQDs/BiOBr/ZnO towards methylene blue within 60 minutes is 88%,and the degradation rate constants are 1.13 times and 3.78 times higher than those of BiOBr/ZnO and pure ZnO,respectively.After 5 repeated experiments,the catalyst still exhibits good stability.
关键词
碳量子点/卤氧铋/氧化锌/光催化Key words
carbon quantum dots/bismuth oxyhalide/zinc oxide/photocatalysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据