Because of the increasing amount of oily wastewater produced each day, it is important to develop superhydrophilic/underwater superoleophobic oil/water separation membranes with ultrahigh flux and high separation efficiency. In this paper, a superhydrophilic/underwater superoleophobic N-isopropylacrylamide-coated stainless steel mesh was prepared through a simple and convenient graft polymerization approach. The obtained mesh was able to separate oil/water mixtures only by gravity. In addition, the mesh showed high-efficiency separation ability (99.2%) and ultrahigh flux (235239 L·m⁻²·h⁻¹). Importantly, due to the complex cross-linked bilayer structure, the prepared mesh exhibited good recycling performance and chemical stability in highly saline, alkaline and acidic environments.

由于每天产生的含油废水量不断增加，因此开发具有超高通量和高分离效率的超亲水/水下超疏油油水分离膜具有重要意义。在本文中，通过简单方便的接枝聚合方法制备了一种超亲水/水下超疏油N-异丙基丙烯酰胺涂层不锈钢网。所获得的网能够仅通过重力分离油/水混合物。此外，筛网表现出高效分离能力（99.2%）和超高通量（235239 L·m ^-2 ·h ^-1）。重要的是，由于复杂的交联双层结构，制备的网在高盐、碱性和酸性环境中表现出良好的回收性能和化学稳定性。