高效经济的油水分离技术是重要的前沿科学问题之一，先进的分离技术对于人均资源较少的我国具有重要的意义。随着纳米技术的发展，利用具有特殊润湿性的微纳结构表面分离油水混合物已成为新兴研究热点。目前被广泛研究的超亲油/超疏水表面由于与油粘附力较大，表面容易被油污染甚至堵塞，其连续分离效果难以保证。为了克服以上问题，2010以后，超亲水/水下超疏油表面得到了广泛关注。然而，这类表面的抗油性能严重依赖于水环境，在实际应用中受到很大限制。相比之下，真正意义上的超疏油/超亲水表面是最为理想的解决方案，具有重要应用价值和广阔的应用前景。但这类表面实现困难，尚存在许多需要解决科学问题。本课题针对超疏油/超亲水表面，基于构造特殊微纳复合结构，研究这类表面的形成机理和制备方法，探索提高其液下稳定性和表面机械耐久性的方法。通过研究超疏油/超亲水微纳复合表面在紫外光电场下的应激响应规律，实现可控油水分离。

The high-efficient and economical oil-water separation technique is one of the most important frontier science issues, it is especially significant to China with less per capita resources. With the development of nanotechnology, micro-nano structural surface with special wettability has become a rising research hotspot for oil-water separation. However, the widely studied superhydrophobic/superoleophilic surface is tend to be contaminate or even blocked by oil with high viscosity, which lead to a failure of oil-water separation. To overcome the defect, superhydrophilic/underwater-superoleophobic surface have drawn widespread attention since 2010. The oil-repellent property of these kinds of surfaces, however, are depends delicately on water environment. This restriction may induce inconvenience in practical use. By contrast, surface with superoleophobic/superhydrophilic properties is the most ideal solution, the research of these kinds of surface is of great significance as well as widespread application prospect. But to date, surface with superoleophobicity and superhydrophilicity is difficult to fabricate due to some unsolved scientific problems. This project focus on construct mechanism and fabrication of superoleophobic/superhydrophilic surface with micro-nano structure. Seeking for methods to enhance the under-liquid and mechanical stabilities of these kinds of surface. Meanwhile, to realize the UV/electrical controllable oil-water separation by studying the response of wettability under corresponding stimulus.