光化學沉積法制備摻雜TiO<sub>2</sub>薄膜

光化學沉積法制備摻雜TiO₂薄膜

摘要: 采用光化學沉積法在玻璃上制備了銳鈦礦型TiO₂和金屬鐵、鉻離子摻雜TiO₂薄膜,并采用XRD,SEM,XPS表征了所合成的薄膜.結果表明,摻雜鐵離子的TiO₂薄膜表面呈現出顆粒狀紋路,摻雜鉻離子的TiO₂薄膜表面呈現網格狀紋路.TiO₂薄膜的親水性能隨著金屬離子的加入而增加.鐵離子的加入對TiO₂薄膜催化降解甲基橙的能力有所促進,而鉻離子的加入對TiO₂薄膜催化降解甲基橙的能力沒有顯著提高.

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⁺.