石墨烯-Bi_2MoO_6可见光催化降解4BS染料  

Photocatalytic degradation of 4BS dye by graphene-Bi_2MoO_6 under visible light

作　　者：毛星[1] 陈建林[1] 毛莉莉[1] 庞欣[1] 

机构地区：[1]南京大学环境学院污染控制与资源化国家重点实验室,江苏南京210046

出　　处：《工业催化》2013年第3期70-73,共4页Industrial Catalysis

摘　　要：采用溶剂热合成法制备性能稳定的可见光石墨烯-Bi2MoO6复合催化剂,研究催化剂对4BS染料的光催化降解效果以及4BS溶液浓度和pH、催化剂用量和石墨烯-Bi2MoO6复合催化剂重复使用次数等对光催化降解效果的影响。结果表明,在催化剂用量0.50 g.L-1、染料初始浓度20 mg.L-1和碱性条件下,光照反应150 min后,4BS去除率达98.5%,催化剂重复使用5次,4BS去除率达78%。复合催化剂结构稳定,可见光下能够有效降解4BS染料。The visible-light photocatalyst graphene-Bi2MoO6 was prepared by the solvothermal synthesis method. The photoactivity of graphene-Bi2MoO6 catalyst and the influence of catalyst dosage, the concentration and pH of 4BS dye solution, and recycling times of graphene-BiEMoO6 catalyst on the photodegradation effect of 4BS dye were investigated. The resuhs showed that the removal rate of 4BS dye of 98.5% was attained under the reaction condition as follows： catalyst dosage 0.50 g ·L^-1 ,4BS dye initial concentration 20 mg ·L^-1, in alkaline solution, and illumination reaction time 150 rain. The removal rate of 4BS dye over the recycled photocatalyst after being repeated use five times reached 78%. The structure of graphene-Bi2MoO6 photocatalyst was stable and 4BS dye could be efficiently degraded by graphene-Bi2MoO6 photocatalyst under visible irradiation.

关 键 词：催化化学 石墨烯-Bi2MoO6复合催化剂 4BS染料 可见光催化降解 

分 类 号：O643.36[理学—物理化学] X701[理学—化学]