非晶型超疏水和超亲水TiO<sub>2</sub>薄膜的制备与表征

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非晶型超疏水和超亲水TiO₂薄膜的制备与表征

基金项目: 国家自然科学基金(20873101)

1.
College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, Hexi University, Zhangye 734000, China;
2.
College of Chemistry and Chemical Engineering, Key Lab of Eco-Environmental Related Polymer Materials of MOE, Northwest Normal University, Lanzhou 730070, China

摘要: 通过溶胶-凝胶法, 以载玻片为基底制得非晶型纳米TiO₂薄膜, 用SEM、 XPS、 XRD和接触角测量仪研究了薄膜的微观形貌、表面元素、晶型结构及薄膜的疏水性, 用Wenzel、 Cassie 理论对纳米TiO₂薄膜的润湿性进行了理论分析。结果表明, 经紫外光照射16 h后, 薄膜表面由超疏水性变为超亲水性, 接触角接近0°。薄膜表面合适的粗糙度和低表面能材料表面修饰的协同作用使其表现出良好的超疏水性。
- TiO₂薄膜 /
- 超疏水 /
- 超亲水 /
- 接触角 /
- 溶胶-凝胶法
Abstract: A non-crystal nanometer titanium oxide film was fabricated on the glass substrate with a method of sol-gel, SEM, XPS, XRD and contact angle meter were employed to characterize its surface morphologies, elements contained, crystal structure and wettability, respectively. The wettability of the film was discussed on the basis of Wenzel’ s and Cassie’ s theory. The results show that the film changes from superhydrophobicity to superhydrophilicity with a static contact angle of 0° after being irradiated under ultraviolet light for about 16 hours. The superhydrophobic properties are caused by the cooperation effect of appropriate surface roughness and surface modification of low surface energy material.
- TiO₂ film /
- superhydrophobicity /
- superhydrophilicity /
- contact angle /
- sol-gel