TiO_2-V_2O_5纳米复合薄膜的溶胶-凝胶制备及性能研究

Preparation and Characteristics of TiO_2-V_2O_5 Nano-composite Thin Films Derived by the Sol-Gel Process

采用溶胶 凝胶技术 ,以钛酸丁脂、V2 O5粉末为原材料制备了纳米结构的TiO2 V2 O5复合薄膜。使用XRD、FTIR、AFM、UV VIS NIR分光光度计等方法研究了复合薄膜的特性。实验结果表明 :复合薄膜具有纳米孔洞结构 ;随V2 O5含量的增加 ,TiO2 晶相由锐钛矿向金红石的转变率大大提高 ,从 5 0 0℃时纯TiO2 的 0 4 2 %增加到含 30 %V2 O5时的 80 5 % ;复合薄膜在紫外区域的吸收显著增强 。

TiO-2-V-2O-5 nano-composite thin films have been prepared by the sol-gel process with C 16 H 36 O-4 Ti and V-2O-5 powder as the starting materials in this paper.The films were characterized by XRD,FTIR,AFM and UV-VIS-NIR spectrophotometer,respectively.The experimental results showed that the TiO-2-V-2O thin films have a nono-porous structure,and that the anatase-rutile transformation rate increased greatly with an increase of V-2O-5 content ranging from 0^42% in pure TiO-2 to 80^5% in the composite films with 30wt% V-2O-5,and the absorption of the films in the ultraviolet range was enhanced remarkably and the absorption edges took a red shift.