Recent advances in covalent organic frameworks-based heterogeneous catalysts for high-efficiency chemical transformation of carbon dioxide

The atmospheric concentration of carbon dioxide (CO2) is gradually rising every year, resulting in the increasing global temperature along with thorny environmental and health issues. Up to now, considerable attention has been focused on the design and expansion of excellent heterogeneous catalysts for chemical transformation of CO2 into high value-added chemicals. Covalent organic frameworks (COFs) and their hybrid materials as a rapidly developing class of porous crystalline materials have been synthesized to capture and utilize CO2 as a carbon resource for multiple chemicals, such as cyclic carbonate, propiolic acid, oxazolidinone, benzimidazole and so on. Herein, we give a comprehensive summary of COFs and their hybrid materials for chemical transformation of CO2 in recent five years. Meanwhile, some representative examples are highlighted and analyzed in detail. Finally, this review also discusses opportunities and challenges in the research area.