WO_3-ZnO复合膜光催化降解亚甲基蓝的研究

Study on Photocatalytic Degradation of Methylene Blue by WO_3-ZnO Composite Films

采用溶胶-凝胶法制备WO3-ZnO复合膜,并用其对亚甲基蓝进行光降解,研究了复合膜的焙烧时间、光源、pH、溶液初始浓度及光照时间对亚甲基蓝降解率的影响。结果表明,在35 mL pH 12.47、浓度为5 mg/L的亚甲基蓝溶液中放置焙烧2.0 h的WO3-ZnO复合膜,紫外光光照60 min后亚甲基蓝的降解率可达98.1%。

The methylene blue was photocatalytically degraded by WO3-ZnO composite films which were prepared through solgel method.The effects of roasting temperature,pH of methylene blue solution,light source,initial concentration and illuminative time on the degradation rate were studied.The results indicated that the degradation rate of methylene blue reached 98.1% if the WO3-ZnO composite films roasted for 2.0 h was placed in 35 mL 5 mg/L,pH 12.47 methylene blue solution and illuminated for 60 min.