TiO2 薄膜的光诱导水下超疏油性。

Photoinduced underwater superoleophobicity of TiO2 thin films.

机构信息

Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University, Kita-ku, Okayama 700-8530, Japan.

出版信息

Langmuir. 2013 Jun 11;29(23):6784-9. doi: 10.1021/la401382g. Epub 2013 May 28.

DOI:10.1021/la401382g

PMID:23701360

Abstract

The photoinduced wettabilities of water, n-hexadecane, dodecane, and n-heptane on a flat TiO2 surface prepared by a sol-gel method-based coating were investigated. An amphiphilic surface produced by UV irradiation exhibited underwater superoleophobicity with an extremely high static oil contact angle (CA) of over 160°. The TiO2 surface almost completely repelled the oil droplet in water. A robust TiO2 surface with no fragile nanomicrostructure was fabricated on a Ti mesh with a pore size of approximately 150 μm. The fabricated mesh was found to be applicable as an oil/water separation filter.

摘要

采用溶胶-凝胶法制备的 TiO2 平板表面，研究了水、正十六烷、正十二烷和正庚烷在其表面的光致润湿性。经紫外光辐照制备的具有双亲性质的表面表现出水下超疏油性，静态油接触角（CA）超过 160°。TiO2 表面几乎完全排斥水中的油滴。在孔径约为 150μm 的 Ti 网表面制备了具有坚固结构且无微纳米结构的 TiO2 表面。该制备的网膜可用作油水分离过滤器。