MOFs-based porous liquids for CO₂ capture and utilization

Due to the greenhouse effect caused by carbon dioxide (CO₂) emission, much attention has been paid for the removal of CO₂. Porous liquids (PLs), as new type of liquid materials, have obvious advantages in mass and heat transfer, which are widely used in gas adsorption and separation. Metal–organic frameworks (MOFs) with the merit like large surface area, inherent porous structure and adjustable topology have been considered as one of the best candidates for PLs construction. This review presents the state-of-the-art status on the fabrication strategy of MOFs-based PLs and their CO₂ absorption and utilization performance, and the positive effects of porosity and functional modification on the absorption-desorption property, selectivity of target product, and regeneration ability are well summarized. Finally, the challenges and prospects for MOFs-based PLs in the optimization of preparation, the coupling of multiple removal techniques, the in situ characterization methods, the regeneration and cycle stability, the environmental impact as well as expansion of application are proposed.