Covalent organic frameworks (COFs) functionalized mixed matrix membrane for effective CO2/N2 separation

Exploration of the Synergy Between 2D Nanosheets and a Non-2D Filler in Mixed Matrix Membranes for Gas Separation

“…As such, Pebax-GO/HNT-0.5/0.5 shows the lowest CO 2 permeation activation energy, in good accordance with the high diffusivity coefficient at room temperature. Figure S8 shows that CO 2 permeability as well as CO 2 /N 2 selectivity only changes little in the pressure range from 1 to 5 bar, which accords well with the Pebax-based MMMs reported in the literature (Duan et al, 2019). It demonstrates that the absorption of CO 2 of the membranes within such pressure range almost follows Henry's Law, and no effect due to compaction is observed.…”

Introducing hydrophilic ultra-thin ZIF-L into mixed matrix membranes for CO2/CH4 separation

“…1). [32][33][34] The Pebax/ZIF-L-X and Pebax/hZIF-L-X membranes were prepared with different loadings (1, 3, 5, 7 and 9 wt%) of ZIF-L akes and hZIF-L akes, respectively. First, a specic amount of ller was dispersed using sonication into a small amount of ethyl alcohol solution to obtain a uniform suspension.…”

Molecularly engineered switchable photo-responsive membrane in gas separation for environmental protection

“…As COFs are constructed through atomically precise integration of building blocks, the variations of pore sizes, functions and structures of COFs are dependent on the diversity of the functional building blocks [69]. In fact, numerous groups reported the excellent gas pair separation using two-dimensional layered-stacking COF-COF composite membrane to separate H 2 /CO 2 , H 2 /N 2 , H 2 /CH 4 [73], and CO 2 /N 2 [74,75]…”