Mixed matrix membranes (MMMs) combining functional fillers with polymer matrices hold promise for high-efficiency separation. However, it remains a great challenge to enhance the loading to fully harness the capabilities of the fillers. Herein, we introduced RUB-15 nanosheets as fillers for MMMs to approach parallel alignment of nanosheets within the matrix, thus achieving a high-loading rate of up to 55 wt% and constructing fast and continuous mass transfer channels. The parallel orientation reduced the occurrence of defects, which played a critical role in enhancing separation. An optimized membrane with a 50 wt% loading rate exhibited exceptional H₂/CO₂ gas separation performance with H₂ permeability of 1934 Barrer and selectivity of 44.5, maintaining a separation factor of 16.7 at 125°C. This study maximizes the performance of porous functional fillers within the membrane by enhancing gas separation capabilities through the ordered alignment of nanosheets and provides valuable insights for future membrane development.

中文翻译：

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用于 H2/CO2 分离的混合基质膜中具有高负载量的有序 2D RUB-15 纳米片


将功能性填料与聚合物基质相结合的混合基质膜 (MMM) 有望实现高效分离。然而，提高负载量以充分利用填料的能力仍然是一个巨大的挑战。在此，我们引入RUB-15纳米片作为MMM的填料，以实现纳米片在基质内的平行排列，从而实现高达55 wt%的高负载率并构建快速、连续的传质通道。平行取向减少了缺陷的发生，这在增强分离方面发挥了关键作用。负载率为50 wt%的优化膜表现出优异的H ₂ /CO ₂气体分离性能，H ₂渗透率为1934 Barrer，选择性为44.5，在125°C 下保持分离因子为16.7。这项研究通过纳米片的有序排列增强气体分离能力，最大限度地提高膜内多孔功能填料的性能，并为未来膜的开发提供了宝贵的见解。