The design and development of efficient approaches for water–oil separation have had widespread interest. Most previously introduced techniques and materials used for development of the successful separation of oily wastewater could not answer all the desired demands, such as being efficient and environmentally and economically friendly. Therefore, in seeking a novel method capable of answering these expectations, surfaces with special wettability were introduced. A novel, reusable, and recyclable superhydrophilic and superoleophobic poly(Vsim-Vim)@PFOA@SiO₂ nanocomposite-coated stainless steel mesh was synthesized through a facile preparation process. Since the most important factors of these coatings are their oleophobicity and hydrophilicity values, the water contact angle (WCA) and the oil contact angle (OCA) were measured. The coating indicated the excellent characteristics in which the results showed that WCA was 0°, while OCA was 142°, which confirmed remarkable superhydrophilicity and superoleophobicity, respectively. It is worth mentioning that the coating owes its surface behavior mainly to the finer size of mesh and formation of silica, which causes the higher roughness and better oleophobicity, reduction of the surface energy of the synthesized poly(Vsim-Vim)@SiO₂ nanocomposite by PFOA, the formation of hierarchical micro-nanometer scale roughness structures on the coating surface, and stable adhesion of SiO₂ nanoparticles into poly(Vsim-Vim). Eventually, superb oil/water separation efficiency of 95% with high stability was attained. This result implied that the fabricated coating is a suitable candidate for water–oil emulsion separation which can potentially be employed in green industrial applications. Also, we believe this approach provides a potential application in controllable oil/water separation in large volumes.

设计和开发有效的水油分离方法引起了广泛的兴趣。用于成功分离含油废水的大多数先前介绍的技术和材料无法满足所有期望的要求，例如高效，环境和经济友好。因此，在寻求一种能够满足这些期望的新颖方法时，引入了具有特殊润湿性的表面。新型，可重复使用和可回收的超亲水和超疏油性聚（Vsim-Vim）@ PFOA @ SiO ₂通过简便的制备过程合成了纳米复合涂层不锈钢网。由于这些涂层的最重要因素是其疏油性和亲水性值，因此测量了水接触角（WCA）和油接触角（OCA）。涂层显示出优异的特性，结果表明，WCA为0°，而OCA为142°，分别证实了显着的超亲水性和超疏油性。值得一提的是，涂层的表面性能主要归因于细小的网孔尺寸和二氧化硅的形成，从而导致更高的粗糙度和更好的疏油性，降低了合成的聚（Vsim-Vim）@SiO ₂的表面能通过PFOA纳米复合材料，在涂层表面形成分层的微纳米级粗糙度结构，以及SiO ₂纳米颗粒对聚（Vsim-Vim）的稳定粘附。最终，达到了95％的高油水分离效率和高稳定性。该结果表明，所制备的涂层是水油乳液分离的合适候选材料，可潜在地用于绿色工业应用。同样，我们认为这种方法在可控油水分离中提供了潜在的应用。