中文摘要：

以普通玻璃片为基材,钛酸丁酯为前驱体,通过氮掺杂可见光改性和三甲基氯硅烷疏水化修饰的方法,制备出一种新颖的表面浸润性受可见光控可逆转换的纳米TiO2薄膜材料（N-TiO2-CTMS）。采用UV-Vis、FE-SEM、接触角测试等方法对样品进行了表征和分析。研究结果显示掺氮量存在最佳值,20%的样品（20%N-TiO2）在可见光下降解甲基橙活性最高。对20%N-TiO2膜进行疏水化修饰后,接触角达到95°,可见光照射5h产生相对亲水表面（45°）,置于黑暗处5h恢复相对疏水（90°）,如此转换可于同一样品多次重复,说明样品具有一定的可见光控亲/疏水可逆转换功能。并对上述现象进行了初步的机理探讨。

英文摘要：

A novel nano TiO2 film （N-TiO2-CTMS） with reversible wettability controlled by visible light was prepared on the surface of glass slide, using tetrabutyl titanate as precursor, via nitrogen-doped and chlorotrimethylsilane modificated. UV Vis, FE-SEM and contact angle measurements ete were used to characterize the samples. The results demonstrated that the sample with 20~ （molar ratio） N-doped concentration （20a//00N- TiO~） held the highest photocatalytic activity on the degradation of methyl orange under visible light. The tar- get N-TiO2-CTMS film was obtained by hydrophobic modified of the 20%N-TiO2 sample, with a surface contact angle of 95%, and it becomes comparatively hydrophilic （45%） after being irradiated under visible light for 5h, and gradually returns to a relatively hydrophobic state （90%） when left in the dark. Such switch could be reversibly cycled on the same surface, indicated that the novel N-TiO2-CTMS film was hydrophobic-to-hydrophilic convertible driven by visible light. Here, the preliminary mechanism for the above results were also investigated.