中文摘要：

摘要：在溶胶-凝胶法制备的TiO2胶膜表面涂覆金属离子，通过焙烧制备TiO2-Fe2O3-CeO2复合纳米薄膜。以甲基橙为目标降解物，讨论过渡金属离子Fe3＋和稀土金属离子Ce2＋的掺杂对TiO2薄膜光催化活性的影响。采用SEM、XRD、EDS等表征手段对复合氧化物薄膜进行表征。结果表明：所制备的薄膜具有纳米结构；Fe3＋、Ce3＋单掺和Fe3＋/Ce3＋共掺均可提高TiO2薄膜的光催化性能，但相同条件下共掺离子的光催化活性更高。

英文摘要：

The metal ions were coated on TiO2 colloidal films prepared by sol-gel method,and a sintering process was adopted to make composite TiO2-Fe2O3-CeO2 nano-films. Taking methyl orange as degraded,it was aimed to discuss the effect of transition metal ion Fe3＋ and rare earth ion Ce3＋ on photo-catalytic activity of TiO2 thin films. SEM,XRD and EDS were used to characterize the composite oxide-films. The experiment re- sults showed that the film had nano-structure. The co-doped Fe3＋ and Ce4＋ composite TiO2 films were more effective than the pure TiO2, doped Fe3＋ or doped Ce4＋ films to photo-degradation methyl orange in solution.