Abstract Advanced membranes with high water flux, excellent salt selectivity as well as superior fouling resistance are highly demanded in water desalination and water treatment. Herein, a new nanocomposite nanofiltration (NF) membrane was reported by introducing the two-dimensional (2D) oxidized molybdenum disulfide (O–MoS2) into the polyamide selective layer. O–MoS2 with high hydrophilicity and strong electronegativity was synthesized by the oxidation and exfoliation process. The nanocomposite membrane was successfully prepared through interfacial polymerization with the incorporation of O–MoS2 into organic phase. O–MoS2 was successfully embedded in the membranes as visualized by SEM and TEM characterizations. The hydrophilicity and electronegativity of the nanocomposite membranes were improved. Compared with the pristine membrane, the performance of the membrane was best when the concentration of O–MoS2 was 0.010 wt/v%. Consequently, the Na2SO4 rejection increased to 97.9%, and the water flux was 2.5 times higher. In addition, the membrane displayed excellent antifouling properties. The results showed that O–MoS2 as an excellent 2D modifier would bring more breakthrough improvements in the field of membrane separation.

中文翻译：

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用于未来海水淡化的几层 2D O-MoS2 TFN 纳滤膜

摘要 在海水淡化和水处理中，迫切需要具有高水通量、优异的盐选择性和优异的抗污染性的先进膜。在此，通过将二维（2D）氧化二硫化钼（O-MoS2）引入聚酰胺选择性层，报道了一种新型纳米复合纳米过滤（NF）膜。通过氧化和剥离过程合成了具有高亲水性和强电负性的 O-MoS2。通过将O-MoS2掺入有机相中，通过界面聚合成功制备了纳米复合膜。O-MoS2 成功嵌入到膜中，通过 SEM 和 TEM 表征可见。纳米复合膜的亲水性和电负性得到改善。与原始膜相比，当 O-MoS2 的浓度为 0.010 wt/v% 时，膜的性能最好。因此，Na2SO4 去除率提高到 97.9%，水通量提高了 2.5 倍。此外，该膜显示出优异的防污性能。结果表明，O-MoS2 作为一种优异的二维改性剂，将在膜分离领域带来更多突破性的改进。