摘要
采用光沉积法制备出Bi/TiO_2复合催化剂,对所得催化剂进行XRD、Mapping和TEM测试表征,并利用15mg/L RhB模拟污染物测试复合催化剂的活性,考察了不同沉积时间对复合催化剂活性的影响。实验结果表明:当沉积时间为1h时,样品TiO_2-1H中Bi颗粒大小为6nm,此时催化剂具有最优量子利用率,Langmuir-Hinshelwood公式拟合反应速率常数k1值为0.471min^(-1),相比于空白样品k0值0.0144min^(-1)提高了32倍。
The photodeposition method was applied to fabricate the Bi/TiO2 catalysts.The catalysts were characterized by XRD,TEM and Mapping,and their catalytic activity for the degradation of 15 mg/L RhB were tested.The effect of photodeposition time on catalytic activity of the catalysts was investigated.The experiment results showed that when the photodeposition time was 1 h,the TiO2-1H,in which the size of Bi was 6 nm,exhibited the best quantum efficiency and its rate constant k1 that was 0.471 min^-1 fitted by Langmuir-Hinshelwood formula was 32 times bigger than that of the blank sample,which was 0.0144 min^-1.
作者
王藤
江成发
WangTeng;J iang .Chengfa(School of Chemical Engineering, Sichuan University, Chengdu 610065,Sichuan, China)
出处
《四川化工》
CAS
2018年第3期29-31,35,共4页
Sichuan Chemical Industry
