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.
出处
《工业催化》
CAS
2013年第3期70-73,共4页
Industrial Catalysis
