Porous framework materials for CO2 capture

Due to the significant impact of carbon dioxide on global ecology, more efforts have been put into the exploration on CO₂ capture and utilization. Porous organic framework materials, as a kind of materials with high porosity and designable structure, have been considered as effective host materials for adsorbing carbon dioxide or separating it from other gases. This review gives a deep insight into the applications of metal-organic frameworks, covalent-organic frameworks, and other porous frameworks on CO₂ capture, focusing on the enhanced capture performances originated from their high surface area with abundant porous structure, functional groups with specific heteroatoms modification, or other building unit interactions. Besides, the main challenges associated with porous frameworks for CO₂ capture and proposed strategies to address these obstacles, including the structural design strategy or the capture mechanism exploration, have been demonstrated and emphasized. This review can contribute to further investigation on porous frameworks for gas capture and separation with enhanced performance and efficiency.