BiVO_(4)光催化剂制备及降解罗丹明B研究  

Ready of BiVO_(4) Photocatalyst and Its Degradation of Rhodamine B

作　　者：华丽[1] 曾建华[1] 胡庆兰[1] 翁方青 朱玉涵 欧小文 邵玉娇[1] 费议俊 HUA Li;ZENG Jian-hua;HU Qing-lan;WENG Fang-qing;ZHU Yu-han;OU Xiao-wen;SHAO Yu-jiao;FEI Yi-Jun(School of Chemistry and Life Science,Hubei University of Education,Wuhan 430205,China)

机构地区：[1]湖北第二师范学院化学与生命科学学院,武汉430205

出　　处：《湖北第二师范学院学报》2022年第2期1-5,共5页Journal of Hubei University of Education

基　　金：湖北第二师范学院校级教学研究项目(No.X2019013)和(No.X2020001);湖北第二师范学院科学研究“新型冠状病毒防治”专项项目研究(No.20XGZX10)。

摘　　要：采用化学沉淀结合煅烧法制备BiVO_(4)光催化剂,并用于对罗丹明B催化降解。环境扫描电子显微镜进行形貌表征,考察光催化时间、光催化剂用量及罗丹明B初始浓度对降解率的影响。结果表明:制备BiVO_(4)为纳米颗粒,平均粒径约50-70nm,颗粒间分散性较好。光催化实验结果表明,罗丹明B溶液的浓度随着光照时间的增加而不断减小,并且BiVO_(4)的光催化效果明显优于空白样品。光催化时间为200min,光催化剂用量5g·L^(-1)时,罗丹明B溶液的初始浓度为40mg·L^(-1),光催化降解率较高,可以达到最大为93%。In this paper,BiVO_(4)photocatalyst was prepared by chemical precipitation coupled with calcination technology.It was used to catalyze the degradation of rhodamine B.The morphology of BiVO_(4)products were characterized by ESEM.The effects of photocatalytic time,amount of photocatalyst and initial concentration of Rhodamine B on the degradation rate were investigated at the same time.The results show that the prepared BiVO_(4)is a nano particle with an average particle size of about 50-70nm and good intergranular dispersion.The results of photocatalytic experiments show that the concentration of Rhodamine B solution decreased with the increase of light time,and the photocatalytic effect of BiVO_(4) was better than that of blank sample.When the initial concentration of Rhodamine B solution is 40 mg·L^(-1),the photocatalysis time is 200 mins.The amount of photocatalyst is 5 g·L^(-1).The photocatalytic degradation rate can be as high as maximum of 93%.

关 键 词：钒酸铋 光催化 降解 罗丹明B 

分 类 号：O643.036[理学—物理化学] O644.1[理学—化学]