Novel Covalent Triazine Framework for High-Performance CO2 Capture and Alkyne Carboxylation Reaction

Carbon dioxide capture and conversion have attracted extreme enthusiasm from the scientific community owing to global warming and environmental problems. However, conversion of CO 2 under atmospheric pressure is of great challenge because of the inertness of CO 2 . Herein, we present a novel covalent triazine framework (CTF-DCE) prepared via ZnCl 2 -catalyzed ionothermal trimerization reaction of di(4-cyanophenyl)ethyne, which displays a high Brunauer–Emmett–Teller surface area of 1355 m 2 g –1 and an excellent CO 2 capture capacity of 191 mg/g at 273 K/1 bar. More importantly, silver species can be successfully fixed on the CTF matrix to produce a stable CTF-DCE-Ag heterogeneous catalyst for outstanding catalysis in the terminal alkyne carboxylation reactions under atmospheric pressure. CTF-DCE-Ag exhibited over sixfold higher turnover numbers than Ag@MIL-101. The recyclability test of the CTF-DCE-Ag catalyst demonstrated a great potential application in various environmental and energy-related applications.