Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 48, Pages 25463-25467Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202110828
Keywords
elimination of membrane defects; metal-organic framework membranes; oriented growth; solvent-free secondary growth; ZIF-95 membrane
Categories
Funding
- National Natural Science Foundation of China [22075084, 22178117, 21878100, 21922301]
- Fundamental Research Funds for the Central Universities [40500-20101222093]
Ask authors/readers for more resources
By using a solvent-free secondary growth method, highly oriented and permselective ZIF-95 membranes can be prepared, which helps in controlling membrane microstructure and reducing intercrystalline defects.
Metal-organic framework membranes are usually prepared by in situ or secondary growth in a solution/hydrogel. The use of organic solvents may cause safety and environmental problems and produce solvent-induced defects. Here, highly oriented and permselective ZIF-95 membranes are prepared for the first time via a solvent-free secondary growth method. The solvent-free growth is not only helpful to control the membrane microstructure and thickness, but also to reduce the intercrystalline defects. In case of solvent-free growth, a perfectly oriented structure leads to an outstanding reduction of intercrystalline defects and transport resistances. For the separation of equimolar binary gas mixtures by using the highly oriented ZIF-95 membrane at 25 degrees C and 1 bar, the mixture separation factors of H-2/CO2 and H-2/CH4 are 184 and 140, respectively, with H-2 permeance of over 1.9x10(-7) mol m(-2) s(-1) Pa-1 which are much higher than those of the randomly oriented ZIF-95 membrane.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available