光照对Sr_4Al_(14)O_(25):Eu^(2+),Dy^(3+)/TiO_(2-x)N_x复合材料光催化性能的影响

Effect of illumination on photocatalytic properties of Sr_4Al_(14)O_(25):Eu^(2+),Dy^(3+)/TiO_(2-x)N_x composites

采用溶胶-凝胶法制备出Sr4Al14O25:Eu2+,Dy3+/TiO2-xNx复合材料。该复合材料对甲基橙具有较高的光催化效果,复合材料经紫外激发后,其光催化效果高于没有经紫外激发的复合材料的光催化效果,而且明显高于Sr4Al14O25:Eu2+,Dy3+和TiO2-xNx光照激发后光催化效率之和,同时讨论了Sr4Al14O25:Eu2+,Dy3+/TiO2-xNx复合材料的光催化机理。

Sr4Al14O25：Eu^2＋,Dy^3＋/TiO2-xNx composites were fabricated by the sol-gel process. Photocatalytic degra- dation of Sr4Al14O25：Eu^2＋,Dy^3＋/TiO2-xNx composites on methyl orange is very high. After illumination, photocatalytic degradation of composite is higher than that of non-illumination composite, and is higher than that of sum of Sr4Al14O25：Eu^2＋,Dy^3＋/TiO2-xNx. In the same time, the photocatalytic mechanism of Sr4Al14O25：Eu^2＋,Dy^3＋/TiO2-xNx com- posites was discussed.