Graphene Oxide‐Assisted Covalent Triazine Framework for Boosting Photocatalytic H<sub>2</sub> Evolution
Cheng Liu, Yongchao C. Wang, Qing Yang, Xinyu Y. Li, Fangli Yi, Kewei W. Liu, Hongmei Cao, Cuijuan J. Wang, Hongjian Yan
Abstract
Abstract Covalent triazine frameworks (CTFs) with two‐dimensional structures have exhibited promising visible‐light‐induced H 2 evolution performance. However, it is still a challenge to improve their activity. Herein, we report π‐conjugation‐linked CTF‐1/GO for boosting photocatalytic H 2 evolution. The CTF‐1/GO hybrid material was obtained by a facile low‐temperature condensation of 1,4‐dicyanobenzene in the presence of GO. The results of photocatalytic H 2 evolution indicate that the optimum hybrid, CTF‐1/GO‐3.0, exhibited an H 2 evolution rate of 2262.4 μmol ⋅ g −1 ⋅ h −1 under visible light irradiation, which was 9 times that of pure CTF‐1. The enhanced photocatalytic performance could be attributed to the fact that GO in CTF‐1/GO hybrids not only acts as an electron collector and transporter like a “bridge” to facilitate the separation and transfer of photogenerated charges but also shortens the electron migration path due to its thin sheet layer uniformly distribution over CTF‐1. This work could help future development of novel conjugated CTF‐based composite materials as high‐efficiency photocatalyst for photocatalysis.