Covalent organic frameworks (COFs): a promising CO₂ capture candidate material

Covalent organic frameworks (COFs) are an emerging kind of porous crystal material. Because of their advantages in terms of pore structure, large specific surface area, and high thermal and chemical stability, they show amazing prospects in gas storage, catalysis, photoelectric materials and so on, and have become a research hotspot worldwide. In particular, they could be used as ideal alternatives for carbon dioxide capture to alleviate the problem caused by the greenhouse effect. In this mini-review, we systematically provide a background overview, covering a brief description of the current problem of excess carbon emissions, and a summary of representative materials used for carbon dioxide capture. More importantly, as the focus of this review, a detailed introduction to COF materials and the latest research results for differently constructed COFs synthesized on the basis of different covalent bond formation methods for carbon capture are summarized, and prospects discussed for future development trends in this field.