SnO_2/ZnO/铝箔复合薄膜的制备及光催化性能研究

Study on the preparation of SnO_2/ZnO composite films on aluminum foil and its photocatalysis capacity

采用溶胶-凝胶法在玻璃片/铝箔上制备SnO2/ZnO复合薄膜,以甲基橙水溶液模拟有机污染物,在可见光及紫外光下研究了SnO2/ZnO薄膜的光催化降解性能。实验结果表明:以铝箔为载体比以玻璃为载体时降解效率要有明显提高;当Sn Cl4在溶胶中的质量浓度为0.05 g/m L时,SnO2/ZnO/铝箔的降解效率最高;光照2 h时,在紫外光照射下降解效率为98.91%,可见光照射下降解效率达到了82.62%。

SnO2/ZnO composite thin film has been prepared by sol-gel method on glass plate/aluminum foil. The photocatalystic degradation capacity of SnO2/ZnO composite thin film has been studied under visible light,using aqueous solution of methyl orange as simulated organic pollutant. The results show that the degradation efficiency by using aluminum foil as carrier is obviously higher than that by using glass plate as carrier. When the mass concentra-tion of SnCl4 in sol is 0.05 g/mL,the degradation efficiency of SnO2/ZnO/aluminum foil is the highest. Under the illu-mination of UV for 2 h,the degradation efficiency is 98.91%,while under the illumination of visible light is 82.62%.