BiVO_4可见光催化活性的实验研究  

Potocatalytic activity of BiVO_4 under visible light

作　　者：安风霞[1] 陈建林[1] 齐凯[1] 张丽[1] 

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

出　　处：《工业催化》2010年第6期71-74,共4页Industrial Catalysis

摘　　要：采用水热法合成可见光催化剂BiVO_4,以直接耐酸大红4BS染料废水为目标污染物,研究了H_2O_2、盐效应和焙烧等因素对光催化降解效果的影响,结果表明,在污染物初始浓度20 mg·L^(-1)、催化剂投加量1 g·L^(-1)、pH=6.38和光照210 min条件下,4BS降解率可达98.9%,盐的加入和催化剂的焙烧对光催化的抑制作用较明显,适量H_2O_2的加入会促进光催化降解效果。A visible light photocatalyst, BiVO4, was prepared by hydrothermal synthesis and effects of H2O2, salt concentration and calcination on the photocatalytic degradation of reactive 4BS was investigated. 4BS degradation of 98. 9% was obtained under following condition： initial 4BS concentration of 20 mg· L^-1 , catalyst dosage of 1 g· L^-1, pH =7, irradiation for 210 min. Addition of salt and calcinations of the catalyst remarkably inhibited the photocatalysis, but appropriate addition of H2O2 improved the photocatalytic degradation.

关 键 词：催化化学 光催化 可见光 BIVO4 催化剂 4BS染料 废水 

分 类 号：O643.36[理学—物理化学] TQ034[理学—化学]