Abstract Facile reverse osmosis membranes with different doping concentrations of metal organic framework MIL-101(Cr)@graphene oxide (GO) were synthesized for desalination by interfacial polymerization, and the MIL-101(Cr) polyhedral particles were encapsulated with GO nanosheets. Contact angles of thin film nanocomposite membranes decrease with the increased concentration of MIL-101(Cr)@GO, suggesting improved surface hydrophilicity. And desirable doping can enhance both water flux and NaCl rejection. For example, with a doping concentration of 0.01%, water flux of the membranes can be increased from 20.49 L/m2·h to 37.95 L/m2·h by 85.21% along with slightly improved NaCl rejection. Our findings indicate that MIL-101(Cr)@GO composite particles can be developed as an effective additive material to fabricate thin film nanocomposite reverse osmosis membranes for desalination applications.

中文翻译：

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在聚酰胺纳米复合膜中掺杂 MIL-101(Cr)@GO 以提高水通量

摘要 采用界面聚合法合成了具有不同掺杂浓度的金属有机骨架 MIL-101(Cr)@氧化石墨烯 (GO) 的简便反渗透膜用于脱盐，并将 MIL-101(Cr) 多面体颗粒用 GO 纳米片包裹。薄膜纳米复合膜的接触角随着 MIL-101(Cr)@GO 浓度的增加而减小，表明表面亲水性提高。理想的掺杂可以增强水通量和 NaCl 排斥。例如，掺杂浓度为 0.01% 时，膜的水通量可以从 20.49 L/m2·h 增加到 37.95 L/m2·h 85.21%，同时对 NaCl 的截留率略有提高。