Mixed-matrix membranes inherit the merits of both polymer materials and filler materials that hold potential for molecular separations, but precisely engineering the filler phase structure remains challenging. Here, the authors describe a reverse-filling approach to fabricate mixed-matrix membranes with continuous and vertically penetrating covalent organic framework channels, which exhibit high CO2 separation performances, long-term stability and scale-up capability.
- Zheyuan Guo
- Wenping Li
- Zhongyi Jiang