Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation.

ABSTRACT: Mixed-matrix membranes that combine the merits of polymer and filler materials offer high potential for molecular separations, but precisely engineering the filler phase structure to give full play to the role of filler materials remains challenging. Herein, we explore a reverse-filling approach to fabricate mixed-matrix membranes with continuous and vertically penetrating covalent organic framework channels for CO₂ separation. Covalent organic framework nanosheets as building blocks are pre-assembled into a robust and vertically oriented covalent organic framework scaffold via ice templating method, with the subsequent polyimide filling into the scaffold. The scaffold inherits the intrinsic CO₂-philic pore structure of nanosheets, which serves as fast and selective C

SUBMITTER: Guo Z 

PROVIDER: S-EPMC12003767 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature