光化学沉积法制备掺杂TiO<sub>2</sub>薄膜

光化学沉积法制备掺杂TiO₂薄膜

摘要: 采用光化学沉积法在玻璃上制备了锐钛矿型TiO₂和金属铁、铬离子掺杂TiO₂薄膜,并采用XRD,SEM,XPS表征了所合成的薄膜.结果表明,掺杂铁离子的TiO₂薄膜表面呈现出颗粒状纹路,掺杂铬离子的TiO₂薄膜表面呈现网格状纹路.TiO₂薄膜的亲水性能随着金属离子的加入而增加.铁离子的加入对TiO₂薄膜催化降解甲基橙的能力有所促进,而铬离子的加入对TiO₂薄膜催化降解甲基橙的能力没有显著提高.

Abstract: TiO₂ thin film and Fe₂O₃/TiO₂ and Cr₂O₃/TiO₂ thin films were prepared by the photodepositing method on soda lime glass substrates. The results of SEM showed that the surface of Fe₂O₃/TiO₂ thin film was occupied by grain-like oxides while the surface of Cr₂O₃/TiO₂ thin film by net-like particles. The hydrophilicities of TiO₂ thin films increased with the doping of Fe³⁺/Cr³⁺. The photoeatalytie activities of TiO₂ films in photodegradation of methylene orange solution increased with the doping of Fe³⁺ but varied little with the doping of Cr³⁺.