High efficiency and anti-pollution oil/water separation membrane has been widely explored and researched. There are a large number of hydroxyl groups on the surface of silica, which has good wettability and can be used for oil-water separation membranes. Hydrophilic silica nanostructures with different morphologies were synthesized by changing templates and contents of trimethylbenzene (TMB). Here, silica nanospheres with radical pores, hollow silica nanospheres and worm-like silica nanotubes were separately sprayed on the PVA-co-PE nanofiber membrane (PM). The abundance of hydroxyl groups and porous structures on PM surfaces enabled the absorption of silica nanospheres through hydrogen bonds. Compared with different silica nanostructures, it was found that the silica/PM exhibited excellent super-hydrophilicity in air and underwater “oil-hating” properties. The PM was mass-produced in our lab through melt-extrusion-phase-separation technique. Therefore, the obtained membranes not only have excellent underwater superoleophobicity but also have a low-cost production. The prepared silica/PM composites were used to separate n-hexane/water, silicone oil/water and peanut oil water mixtures via filtration. As a result, they all exhibited efficient separation of oil/water mixture through gravity-driven filtration.

中文翻译：

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用于油水分离的二氧化硅/ PVA- co- PE纳米纤维膜的制备

高效，抗污染的油水分离膜已得到广泛的探索和研究。二氧化硅表面有大量羟基，具有良好的润湿性，可用于油水分离膜。通过改变三甲基苯（TMB）的模板和含量，合成了具有不同形态的亲水性二氧化硅纳米结构。在此，将具有自由基孔的二氧化硅纳米球，空心二氧化硅纳米球和蠕虫状二氧化硅纳米管分别喷涂在PVA-co-PE纳米纤维膜（PM）上。PM表面上的大量羟基和多孔结构使二氧化硅纳米球能够通过氢键吸收。与不同的二氧化硅纳米结构相比，发现二氧化硅/ PM在空气和水下“憎油性”方面表现出极好的超亲水性。通过熔融挤出相分离技术在我们的实验室中大量生产了PM。因此，所获得的膜不仅具有优异的水下超疏油性，而且具有低成本的生产。制备的二氧化硅/ PM复合材料用于通过过滤分离正己烷/水，硅油/水和花生油水的混合物。结果，它们都表现出通过重力驱动过滤有效分离油/水混合物。制备的二氧化硅/ PM复合材料用于通过过滤分离正己烷/水，硅油/水和花生油水的混合物。结果，它们都表现出通过重力驱动的过滤有效分离油/水混合物。制备的二氧化硅/ PM复合材料用于通过过滤分离正己烷/水，硅油/水和花生油水的混合物。结果，它们都表现出通过重力驱动的过滤有效分离油/水混合物。