Abstract
CO2 separation and recovery technology is a significant part of resolving the global greenhouse issue. In order to develop a cost-effective and high-performance method to realize CO2 separation, a new kind of supported liquid membrane was configured by incorporating deep eutectic solvent into the nanoslits of titanium carbide (Ti3C2Tx) membrane. The deep eutectic solvent is a novel ionic liquid analogous with equal physical and chemical advantages but more economical and environmental benign. And the Ti3C2Tx, as a neoteric two-dimension material, can serve as a valid platform for supporting the deep eutectic absorbent. By combining the two kinds of material, the resultant Ti3C2Tx supported deep eutectic liquid membrane shows good CO2 preference against other light gases as well as high thermal stability and long-term durability. The permeance of CO2 is about 26.35 GPU with selectivity over N2, CH4 and H2 are 319.15, 249.01 and 12.38, respectively. The molecule dynamic simulation is also applied to uncover the separation mechanism of CO2 and the ingredient redistribution and interionic refactor phenomenon of deep eutectic solvent trapped in the Ti3C2Tx nanoslits.
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