Troger's base functionalized covalent triazine frameworks for CO2 capture

Abstract

A series of covalent triazine frameworks containing Troger's base segments (CTF-TBs) were designed and prepared by dynamic trimerization under ionothermal conditions, based on the novel dicyano monomer of dicyano Troger's base (DCTB). The CTF-TBs were all amorphous and exhibited surface areas between 294 to 732 m² g⁻¹. The effect of reaction conditions including ratio of catalyst/monomer and temperature on the pore properties was discussed. Meanwhile, the adsorption capacity of CO₂ for all the CTF-TBs was studied and the CO₂ uptake capacity was up to 16.84 wt% at 273 K and 1.10 bar for CTF-TB-3.