Metal-organic framework (MOF) membranes have enormous potential in separation applications. There are several MOF membranes grown on polymer substrates aimed for scale-up, but their brittleness hampers any industrial application. Herein, intergrown continuous polypropylene (PP)-supported ZIF-8 membranes have been successfully synthesized via fast current-driven synthesis (FCDS) within 1 h. The PP-supported ZIF-8 membranes exhibit a promising separation factor of 122 ± 13 for binary C3H6-C3H8 mixtures combined with excellent flexibility behavior. The C3H6/C3H8 separation performance of the PP-supported ZIF-8 membrane was found to be constant after bending the supported ZIF-8 film with a curvature of 92 m-1. This outstanding mechanical property is crucial for practical applications. Moreover, we further synthesized ZIF-8 membranes on various polymer substrates and even polymer hollow fibers to demonstrate the production scalability.

中文翻译：

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用于高效丙烯/丙烷分离的柔性聚丙烯支撑 ZIF-8 膜

金属有机骨架 (MOF) 膜在分离应用中具有巨大的潜力。有几种在聚合物基材上生长的 MOF 膜旨在扩大规模，但它们的脆性阻碍了任何工业应用。在此，共生连续聚丙烯 (PP) 支撑的 ZIF-8 膜已通过快速电流驱动合成 (FCDS) 在 1 小时内成功合成。PP 支撑的 ZIF-8 膜对二元 C3H6-C3H8 混合物表现出有希望的分离因子为 122±13，并具有出色的柔韧性。发现 PP 支撑的 ZIF-8 膜的 C3H6/C3H8 分离性能在将支撑的 ZIF-8 膜弯曲成 92 m-1 的曲率后保持不变。这种出色的机械性能对于实际应用至关重要。而且，