Molecular Foundry scientists, working with the ALS, have developed a hybrid polymer-MOF membrane that is eight times more CO2 permeable than membranes composed only of the polymer.
Significance and Impact
This new, highly permeable carbon capture membrane could lead to more efficient ways of separating carbon dioxide from power plant exhaust, preventing the greenhouse gas from entering the atmosphere.
- The hybrid membrane combines a polymer with a metal-organic framework (MOF).
- MOFs are porous three-dimensional crystals with large internal surface areas that can absorb enormous quantities of molecules.
- The membrane allows carbon dioxide molecules to travel through it via two distinct channels; the polymer component and the MOF.
- This two-route approach makes the hybrid membrane eight times more CO2 permeable than membranes composed only of the polymer.
- Increased carbon dioxide permeability allows the material to be more energy efficient and cost competitive.