Molecular Foundry users and scientists have developed a new nanocrystal-polymer composite membrane that can quickly and efficiently separate CO2 from N2 gas.
Significance and Impact
The new mixed-matrix polymer has double the separation performance compared to a plain polymer. This will lead to low-cost and efficient membranes for capturing CO2 from the effluent of coal or gas-burning power plants.
- For the first time, a phase-change metal-organic framework (MOF) was embedded inside a polymer, resulting in a two-fold increase in the permeability of CO2 and ability of the polymer to separate CO2from N2
- The researchers developed a new way to synthesize Mg-based phase-change MOF nanocrystals that have the ability to reversibly take up CO2.
- The phase-change MOF nanocrystals were coated with diamenes and then incorporated into a polymer membrane.
- The diamene molecules line the MOF channels in the membrane, facilitating the uptake and release of CO2.