Merging polymers of intrinsic microporosity and porous carbon-based zinc oxide composites in novel mixed matrix membranes for efficient gas separation

The p-diethanolaminomethylcalix[4]arene-incorporated polyacrylonitrile-based facilitated-transport-nanofiber mat for O2/N2 separation

“…The C@ZnO/PIM MMM showed permeability of 13 215 barrer for CO 2 with CO 2 /N 2 and CO 2 /CH 4 selectivity of 21.5 and 14.4, respectively. 23 Herein, it is worth mentioning that the separation of O 2 and N 2 is very difficult to achieve with high selectivity value due to the minute difference in their kinetic diameters of 3.46 Å and 3.64 Å for O 2 and N 2 , respectively. 24 A MMM based on a polymeric blend of poly(2-acrylamido-2-methyl-1-propanesulfonic acid) and polyvinyl chloride embedded with Co 3 O 4 /GO was evaluated for O 2 /N 2 separation.…”

“…In another study a MMM comprised of porous carbon-based zinc oxide composite (C@ZnO) embedded into polymer of intrinsic microporosity (PIMs) was reported to possess high permeability due to the presence of sufficient interconnected pores provided by C@ZnO. The C@ZnO/PIM MMM showed permeability of 13,215 Barrer for CO 2 with CO 2 /N 2 and CO 2 /CH 4 selectivity of 21.5 and 14.4, respectively 23 . Here it is worth mentioning that separation of O 2 and N 2 is very difficult to achieve with high selectivity value due to the minute difference between their kinetic diameters such as 3.46 Å and 3.64 Å for O 2 and N 2 , respectively 24 .…”