BiVO_4合成及其光催化性能  

Preparation of BiVO_4 and its photocatalytic behaviors

作　　者：许岳泰[1] 陈建林[1] 齐凯[1] 陈亚[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,江苏南京210093

出　　处：《工业催化》2009年第12期68-72,共5页Industrial Catalysis

摘　　要：以Bi(NO_3)_3·5H_2O和NH_4VO_3为原料,水热法合成了可见光催化剂BiVO_4,进行紫外-可见漫反射实验、XRD和BET表征。研究了pH、催化剂合成水热温度和催化反应时间对4BS溶液进行光催化降解效果的影响。确定最佳条件为:pH=7.00,水热合成催化剂温度160℃,水热时间2 h,在此条件下,光照210 min后,染料脱色率可达98.9%。水热合成的新型纳米催化剂BiVO_4具有良好的可见光催化活性。A new type of visible-light-driven BiVO4 photocatalyst was prepared from Bi （NO3 ）3 · 5H2O and NH4VO3 by hydrothermal method. The as-prepared BiVO4 was characterized by UV-vis DRS, XRD and BET. Effects of pH, hydrothermal temperature and reaction time on degradation of 4BS catalyzed by BiV04 under visible light irradiation were investigated. The optimum condition was obtained as follows： pH 7.00, hydrothermal preparation at 160 ℃ for 2 b. Degradation rate of 98.9% was attained over the as-prepared catalyst after visible light irradiation for 210 min.

关 键 词：催化化学 光催化降解 可见光 BiVO4催化剂 水热合成 

分 类 号：O643.36[理学—物理化学] O644[理学—化学]