摘要
以廉价的工业偏钛酸代替了常用的钛酸丁酯为原料在玻璃基体上制备了牢固透明的纳米TiO2 薄膜。扫描探针显微镜 (DFM)观察到TiO2 颗粒的粒径为 2 0～ 30nm。X射线衍射 (XRD)表明 :本研究得到的TiO2 煅烧温度在 5 0 0～ 70 0℃均为稳定的锐钛型。以光降解甲基橙溶液试验检测了TiO2 薄膜的光催化性 ,试验结果表明 :涂层越厚光催化效率越高 ,镀膜 5次时 ,光降解率达到 90 4 5 % ,掺入SnO2 后光降解率由 81 6 8%提高到 91 2 2 % ,薄膜经稀H2 SO4处理后光降解率由 81 6 8%提高到 88 31%。
Nano-scale TiO 2 Thin Films were successfully prepared by using TiO 2 sol on soda-lime glass from metatitanic acid instead of Ti(OC 4H 9) 4. The sizes of TiO 2 particles in thin film are 20?nm to 30?nm. XRD patterns show peaks of anatase TiO 2 at sintering temperture 500?℃ to 700?℃ in this experiment. Photocatalytic activity of TiO 2 films was tested by photocatalytic degradation of Methyl orange aqueous solution. The experiment results indicate that the photocatalytic efficiency of TiO 2 films achieved 90.45% when coating cycles was five and after SnO 2-doped photocatalytic efficiency was raised to 91.22% from 81.68% and when the films had been treated with diluted H 2SO 4 photocatalytic efficiency was raised to 88.31% from 81.68%.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2003年第10期1089-1092,共4页
Chemical Industry and Engineering Progress
关键词
偏钛酸
光催化性
纳米二氧化钛薄膜
光降解
表面酸处理
nanosized TiO 2 films, metatitanic acid, photocatalytic degradation,SnO 2-doped, surface acid treatment, sol-gel process
