摘要
利用快速沉淀法优化制备了低含量Eu掺杂ZnO光催化剂,以罗丹明B为模型污染物,考察光催化降解动力学及催化剂稳定性,并对最优催化剂进行扫描电镜、X射线衍射、氮气吸脱附、紫外-可见漫反射光谱、红外光谱表征。结果表明,当铕锌物质的量之比为0.2%,600℃煅烧2 h活性最佳,光催化降解过程遵循准一级动力学,套用稳定性良好。催化剂呈无孔晶体状纳米颗粒,掺杂扩展了光吸收范围,提高了光催化活性。
A type of low content europium doped zinc oxide was optimized and prepared by rapid precipitation method,and taking rhodamine B as a model pollutant for photocatalytic degradation,the photocatalytic degradation kinetics and catalyst stability were investigated,furthermore,the optimal catalysts were characterized by SEM,XRD,N 2 adsorption and desorption,UV-Vis DRS and FT-IR.The results suggested that the optimum doped ratio and calcination temperature were 0.2%(n∶n)and 600℃for 2 h,respectively.Photocatalytic degradation followed pseudo-first order kinetics and exibited favorable cyclic application stability.The catalyst was non-porous crystal-like nanoparticles,europium doping expanded the light absorption range and improved the photocatalytic activity.
作者
邵耀翔
苏鹏辉
宋亚萍
张凯龙
SHAO Yao-xiang;SU Peng-hui;SONG Ya-ping;ZHANG Kai-long(College of Biological and Environmental Sciences,Zhejiang Wanli University,Zhejiang Ningbo 315100,China)
出处
《广州化工》
CAS
2023年第3期92-95,共4页
GuangZhou Chemical Industry
基金
宁波市自然科学基金项目(202003N4329)
浙江省大学生科技创新活动计划暨新苗人才计划项目(2022R420A007)
浙江省基础公益研究计划项目(LGC21B070003)。
关键词
铕
氧化锌
光催化降解
罗丹明B
europium
zinc oxide
photocatalytic degradation
rhodamine B
