The effective oil/water separation is important in the treatment of oily wastewater. Recently, materials with superwetting have become research hotspots due to their high oil/water separation efficiency and wide application. Here, TiO₂/Ti mesh with both superhydrophilicity and superhydrophobicity was successfully fabricated to separate oil/water mixtures. Superhydrophilic TiO₂ nanotube film was prepared on Ti mesh by anodic oxidation. The superhydrophilic TiO₂/Ti mesh showed good oil/water separation property for various oil/water mixtures. Besides, the superhydrophilic TiO₂/Ti mesh exhibited anti-corrosive separation property that had high separation efficiency for oil/strong acid/alkali/salt solution mixtures. After surface modification with lauric acid, the superhydrophilic TiO₂/Ti mesh converted to superhydrophobic. The superhydrophobic TiO₂/Ti mesh indicated good durability under different conditions that it showed thermal stability under 150°C, anti-icing property at -20°C and mechanical stability under abrasion and bending test. Moreover, the superhydrophobic TiO₂/Ti mesh could also separate various oil/water mixtures efficiently.

有效的油/水分离对含油废水的处理很重要。近来，具有高润湿性的材料因其高的油/水分离效率和广泛的应用而成为研究热点。在这里，成功地制造了具有超亲水性和超疏水性的TiO ₂ / Ti网眼，以分离油/水混合物。通过阳极氧化在Ti网上制备了超亲水性的TiO ₂纳米管薄膜。超亲水性TiO ₂ / Ti筛孔对各种油/水混合物显示出良好的油/水分离性能。此外，超亲水性TiO ₂/ Ti网眼具有抗腐蚀的分离特性，对油/强酸/碱/盐溶液混合物具有很高的分离效率。用月桂酸进行表面改性后，超亲水性TiO ₂ / Ti筛网转变为超疏水性。超疏水TiO ₂ / Ti筛网在不同条件下显示出良好的耐久性，在150°C时表现出热稳定性°C，-20的防冰性能°C和在磨损和弯曲试验下的机械稳定性。而且，超疏水的TiO ₂ / Ti筛网还可以有效地分离各种油/水混合物。