Shami Zahed, Amininasab Seyed Mojtaba, Katoorani Seyed Adib, Gharloghi Atefeh, Delbina Somayeh
Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran.
Langmuir. 2021 Oct 26;37(42):12304-12312. doi: 10.1021/acs.langmuir.1c01692. Epub 2021 Oct 13.
Oil-polluted water mixtures are difficult to separate, and thus, they are considered as a global challenge. A superior superhydrophilic and low-adhesive underwater superoleophobic styrene-acrylate copolymer filtration membrane is constructed using a salt (NaOH)-induced phase-inversion approach. The as-fabricated filtration membrane provides a hierarchical-structured surface morphology and three-dimensional high density open-rough porous geometry with a special chemical composition including highly accessible hydrophilic -COO agents, which all are of great importance for long-term usage of immiscible/emulsified (light) oil-polluted wastewater separation. The separation is performed with a high efficiency and a high flux under either a gravity-driven force or a small applied pressure of 0.1 bar. The filtration membrane indicates an excellent anti-fouling property and is easily recycled during multiple cycles. The outstanding performance of the filtration membrane in separating oil-polluted water mixtures and the cost-effective synthetic approach as well as commercially scaled-up initial materials all highlight its potential for practical applications.
油污染的水混合物难以分离，因此，它们被视为一项全球性挑战。采用盐（氢氧化钠）诱导相转化法构建了一种性能优异的超亲水且低粘附性的水下超疏油苯乙烯 - 丙烯酸酯共聚物过滤膜。所制备的过滤膜具有分级结构的表面形态和三维高密度开放粗糙多孔几何结构，其特殊的化学组成包括易于接触的亲水性 -COO 基团，所有这些对于长期用于不混溶/乳化（轻质）油污染废水的分离都非常重要。在重力驱动力或 0.1 巴的小外加压力下，分离过程都具有高效率和高通量。该过滤膜具有优异的抗污染性能，并且在多个循环中易于回收。该过滤膜在分离油污染水混合物方面的出色性能、经济高效的合成方法以及可进行商业规模放大的初始材料，都突出了其实际应用潜力。
