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环境化学  2015 

SnWO4可见光催化降解甲基橙研究

Keywords: SnWO4,可见光,溶剂热合成,甲基橙

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Abstract:

采用溶剂热法合成了可见光催化剂SnWO4,以甲基橙溶液为目标污染物,研究了催化剂的用量、溶液的初始浓度、盐效应等因素对光催化降解效果的影响.结果表明,甲基橙溶液初始浓度为20mg·L-1、催化剂的最佳投加量为1.5g·L-1,SnWO4的催化活性最好,光照反应90min对目标污染物的去除率可达99.37%;溶液中Na2SO4浓度的增加对降解有抑制作用;催化剂重复使用后催化效果有所下降,但仍然可以保持在初始值的85%左右.

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