Improved synthesis of porous C2N for CO2 conversion

Abstract Since the initial introduction of porous C 2 N‐h2D materials by the Baek group in 2015, these materials have exhibited highly promising applications in fields such as semiconductor devices, heterogeneous catalysis, gas storage and separation, biomedicine, and more. However, much of the existing research on C 2 N materials has been based on theoretical calculations due to the challenges associated with their synthesis. In this study, an enhanced synthesis method for porous C 2 N materials has been successfully developed, involving the innovative and nonexplosive synthesis of hexaaminobenzene trihydrochloride (HAB·3HCl) as a crucial intermediate, as well as a time‐efficient synthesis of C 2 N. Rigorous structural characterizations have been conducted, including solid‐state NMR analysis, among others. The resultant C 2 N material has been effectively employed to improve the efficiency of CO 2 conversion reactions. This straightforward protocol for synthesizing C 2 N materials is poised to stimulate further exploration and application of this promising 2D material in the near future.