采用溶胶凝胶法制备了铂铬共掺杂纳米TiO2薄膜，并用AFM、XRD、UVVis等对薄膜进行了表征。实验结果表明，铂铬共掺杂TiO2薄膜粒径约为32 nm；厚度为290 nm左右时，薄膜对亚甲基蓝的降解率在2.5 h达到95％左右；共掺体系的最佳掺杂量为n(Cr)∶n(TiO2)=0.4%, n(Pt)∶n(TiO2)=0.03%, 此时TiO2薄膜对亚甲基蓝有良好的降解效果，优于同等条件下制备的纯TiO2薄膜和铂、铬单掺杂TiO2薄膜。
Pt and Cr codoped NanoTiO2 film was prepared by the solgel method. The film was characterized by AFM, XRD and UVVis. The experiment showed that when the average TiO2 film diameter is 32 nm and the film thickness is 290 nm, the rate of photodegradation is 95% in 2.5 hours. Additionally, when the optimal codoping ratio for PtCr is n(Pt): n(TiO2) equals 0.03% and n(Cr):n(TiO2) equals 0.4%, the photodegradation of methylene blue for NanoTiO2 film can be enhanced. The photocatalytic properties of Pt and Cr codoped NanoTiO2 film is better than that of pure TiO2 and Pt, Cr separatelydoped TiO2 film.
黄佳木,朱小红,蔡小平.铂铬共掺杂纳米TiO2薄膜的制备及其光催化性能[J].重庆大学学报,2008,31(9):1018-1022.
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