Answers are grounded in this paper and cite their sources.
Demonstrates improved CO2/H2 selectivity in composite membranes, indicating promising gas separation applications.
Membranes that can overcome the permeance-selectivity trade-off are highly desirable for gas separations. Composite membranes have attracted increasing attention by integrating the excellent properties of various single-layer materials. In this work, we report a series of composite membranes with an MOF-based porous liquid (PL) layer, a PIM-1-polyurethane (PU) layer, and a polyacrylonitrile (PAN) substrate for effective CO 2 capture. The synergistic effect arising from the fast screening channels of the PIM-1-PU polymer layer and the high selectivity of the PL layer induced by enhanced CO 2 adsorption endows the resulting membranes with excellent CO 2 /H 2 separation performance. The obtained ZIF-8@[bmim][Tf 2 N]/PIM-1-PU membrane exhibits a high CO 2 permeance of 32 GPU and a CO 2 /H 2 selectivity of 14.6 with a binary CO 2 /H 2 (50/50, v/v) mixture at room temperature, surpassing the 2008 Robeson upper bound. Furthermore, the membrane maintains its stability after 100 h of stability testing as well as a high-pressure testing of 500 kPa. This research provides insights into the strategic design of porous liquid-based composite membranes for advanced gas separation.
No takes yet. Share an insight, caveat, or question.
Yang et al. (2026) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: