摘要
以五水硝酸铋、KX(X=Cl、Br、I)、硅藻土为原料,采用直接水解法制备了质量比不同的Bi OX/硅藻土复合光催化剂,并进行了XRD和SEM表征分析,同时采用罗丹明B为目标降解物,以50 W LED紫光/蓝光灯为光源考察了制备光催化剂的可见光光催化性能。结果表明BiOX在硅藻土圆筛上成功负载且为片状分级结构,同等条件下,水解体系中1.0 g硅藻土负载Bi OBr得到的复合光催化剂具有最优的光催化性能,在染料初始浓度为15 mg/L,催化剂用量为0.15 g,50 W LED蓝光灯照射50 min的条件下罗丹明B的降解率达到了86.7%。
By the method of hydrolysis-deposition,BiOX/diatomite composite photocatalyst was synthesized using diatomite as supporter and Bi（NO_3）3·5H_2O as precursor.The as-prepared samples were characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The photocatalytic property of these composites were investigated with Rhodamine B as a target pollutant under50 W UV/BL LED light irridiation.The results indicate that the hierarchical BiOX is loaded on the surface of diatomite in schistose.At the same time,the obtained 1.0 g diatomite/Bi OBr in hydrolysis system showes the highest photocatalytic performance.The photocatalytic degradation rate of Rhodamine B is up to 86.7% under the condition as follows：15 mg/L initial dye concentration,0.15 g catalyst dosage,50 W blue LED light irradiation 50 min.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2018年第1期342-346,356,共6页
Bulletin of the Chinese Ceramic Society
基金
黑茶金花湖南省重点实验室(2016TP1022)
湖南省普通高等学校中青年骨干教师国内访问学者项目湘教通([2017]247号)
湖南省教育厅科学研究项目(16C0297)
湖南城市学院大学生创新性实验项目(2016XS04)
