With the development of industrial society, offshore oil spills occur frequently, and more and more attention has been paid to the efficient oil/water separation materials. Herein, a novel nano-MnO_x particles mineralized oxidized-polypropylene (MnO_x-OPP) membrane was fabricated through a simple one-step immersion process. Polypropylene (PP) melt-blown nonwoven was oxidized by acid potassium permanganate solution; meanwhile, resulting nano-MnO_x particles were deposited on the fiber surface to obtain the special micro-nano structure, which greatly enhanced the PP membrane's hydrophilicity. The as-prepared membranes exhibit superhydrophilicity and underwater superoleophobicity with high separation efficiencies of over 99% for oil/water mixtures prepared by various types of mineral oil and vegetable oil, and the permeation flux is up to 61,177 L m^-2h⁻¹. After 30 separation cycles, no significant separation efficiency loss was observed, indicating excellent separation stability. In addition, the MnO_x-OPP membranes possess superior corrosion resistance and long effectiveness, which have broad application prospects in practical oily wastewater.

随着工业社会的发展，海上溢油事故频发，高效的油水分离材料越来越受到重视。在此，通过简单的一步浸渍工艺制备了一种新型纳米 MnO _x颗粒矿化氧化聚丙烯 (MnO _x - OPP) 膜。聚丙烯（PP）熔喷非织造布经酸性高锰酸钾溶液氧化；同时，得到的纳米 MnO _x颗粒沉积在纤维表面，获得特殊的微纳米结构，大大增强了PP膜的亲水性。所制备的膜表现出超亲水性和水下超疏油性，对各种矿物油和植物油制备的油/水混合物的分离效率高达99%以上，渗透通量高达61,177 L m ^-2 h ^-1。在 30 次分离循环后，没有观察到明显的分离效率损失，表明分离稳定性非常好。此外，MnO _x - OPP膜具有优异的耐腐蚀性和长效性，在实际含油废水中具有广阔的应用前景。