采用溶胶-凝胶法,以钛酸丁酯为前驱体制备了不同Cu-Ce掺杂量的纳米TiO2.光催化材料.通过模拟环境室内甲醛气体的降解实验,探讨了不同样品在日光灯和纯可见光下的光催化效果,并采用X射线衍射仪和紫外-可见分光光谱仪对其晶相结构与光学特性进行表征分析.结果表明,Cu-Ce掺杂能明显提高二氧化钛在可见光下的光催化活性,当Cu-Ce掺杂浓度为2.5％时,对甲醛气体的光催化降解效果最佳.%Cu-Ce/TiO2 nano-particles were synthesized by sol-gel method, using Ti(C4H9O)1 as the raw material. And the photocatalytic activities of the prepared samples were investigated by degrading formaldehyde gas through simulating indoor environment, under pure visible light and daylight lamp respectively. Moreover, X-ray powder diffraction( XRD) and ultraviolet-visible spectrophotometer were applied to analyze the crystallite structure and optical properties of the samples. It is indicated that doping Cu and Ce can enhance TiO2 photocatalysis greatly and lead to the maximum photocatalysis when their molar ratio accounts for 2. 5%.
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