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In this present work, a facile approach of fabricating thin-film composite nanofiltration membranes was proposed by introducing a graphene oxide (GO)@poly(dopamine) (PDA) interlayer, which was conducted by dopamine self-polymerization and amino/acyl chloride interfacial polymerization. It could be found that the presence of a GO@PDA interlayer had a significant influence on the polyamide formation including polyamide topography, thickness, hydrophilicity, and separation performance. Under the optimum conditions, the designed membrane exhibited a pure water flux of 11.4 L·m –2 ·h –1 ·bar –1 (0.8 MPa, 25 °C) and high salt rejections of different salts with the order Na 2 SO 4 (98.22%) > MgSO 4 (97.76%) > MgCl 2 (84.05%) > NaCl (66.99%). In addition, the modified membrane displayed excellent anti-fouling property and structural stability. As a summary of the finding in this work, it is expected to contribute a strategy on the fabrication of nanofiltration membrane with good performance, which will exhibit a high potential of industrial application.
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Wang et al. (2021) studied this question.
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