Covalent Triazine Frameworks Obtained from Nitrile Monomers for Sustainable CO2 Catalysis

Carbon dioxide catalytic conversion (i. e., CO2 catalysis) is considered as one of the most promising technologies to control CO2 emissions, which is of great significance to build a sustainable society with green low-carbon cycle. In view of its thermodynamic stability and kinetic inertness, CO2 selective activation is still desired. Nowadays, the traditional strategy is to selectively capture and efficiently convert atmospheric CO2 into high value-added chemicals and fuels. Covalent triazine frameworks (CTFs) as a newly emerging and attractive kind of porous organic polymer (POP) have drawn worldwide attention among heterogeneous catalysis because of their nitrogen-rich porous structures and exceptional physicochemical stabilities. In this Minireview, the focus was mainly placed on the structural design and synthesis of CTFs and their applications in CO2 catalysis including CO2 cycloaddition, CO2 carboxylation, CO2 hydrogenation, CO2 photoreduction, and CO2 electroreduction. By discussing the structure-property relationship, valuable guidance from a sustainable perspective may be provided for developing precisely designed CTFs with high performance and excellent industrial application prospects in sustainable CO2 catalysis.