Porous MOF glasses are candidate fillers for interfacial void mitigation in mixed matrix membranes (MMMs), however, the inevitable decreased porosity in the glassy state is not conducive to membrane performance optimization. The rational design of porous MOF glass based MMMs remains a great challenge to achieve both high permeability and selectivity. Herein, a novel agZIF-62/PIM-1 (agZIF-62, the glass phase of ZIF-62) membrane has been fabricated by an optimized in-situ thermal treatment of ZIF-62/PIM-1 precursor membranes. Thermal treatment eliminates interfacial non-selective voids between agZIF-62 and PIM-1, and simultaneously increases PIM-1 free volume. As a consequence, both permeability and selectivity are significantly enhanced. The agZIF-62/PIM-30% membranes exhibit superior and stable separation performances with a CO₂/CH₄ selectivity of 67 and CO₂ permeability of 5914 Barrer, which are improved by 268% and 27% compared with the pristine PIM-1 membranes, surpassing 2019 upper bound.

多孔 MOF 玻璃是混合基质膜 (MMM) 中减少界面空隙的候选填料，然而，玻璃态孔隙率不可避免地降低不利于膜性能优化。基于多孔 MOF 玻璃的 MMM 的合理设计对于实现高渗透性和选择性仍然是一个巨大的挑战。在此，一种新型agZIF-62/PIM-1（agZIF-62 ， ZIF-62的玻璃相）膜通过对ZIF-62/PIM-1前体膜进行优化的原位热处理制成。热处理消除了agZIF-62和PIM-1之间的界面非选择性空隙，同时增加了PIM-1自由体积。结果，渗透性和选择性均显着增强。agZIF -62/PIM-30%膜表现出优异且稳定的分离性能，CO ₂ /CH ₄选择性为67，CO _{2渗透率为5914 Barrer，与原始}PIM-1相比提高了268%和27%膜，超过2019年上限。