Xie Jijia, Fang Zhiping, Wang Hui
Sinopec Beijing Research Institute of Chemical Industry, Beijing 100029, China.
Department of Science & Technology R & D, Sinopec Group, Beijing 100728, China.
Polymers (Basel). 2022 Mar 27;14(7):1363. doi: 10.3390/polym14071363.
The conversion of solar energy and water to hydrogen via semiconductor photocatalysts is one of the efficient strategies to mitigate the energy and environmental crisis. Conjugated polymeric photocatalysts have advantages over their inorganic counterparts. Their molecular structures, band structures, and electronic properties are easily tunable through molecular engineering to extend their spectral response ranges, improve their quantum efficiencies, and enhance their hydrogen evolution rates. In particular, covalent triazine-based frameworks (CTFs) present a strong potential for solar-driven hydrogen generation due to their large continuous π-conjugated structure, high thermal and chemical stability, and efficient charge transfer and separation capability. Herein, synthesis strategies, functional optimization, and applications in the photocatalytic hydrogen evolution of CTFs since the first investigation are reviewed. Finally, the challenges of hydrogen generation for CTFs are summarized, and the direction of material modifications is proposed.
通过半导体光催化剂将太阳能和水转化为氢气是缓解能源和环境危机的有效策略之一。共轭聚合物光催化剂相对于无机光催化剂具有优势。它们的分子结构、能带结构和电子性质可通过分子工程轻松调节，以扩展其光谱响应范围、提高量子效率并提升析氢速率。特别是，基于共价三嗪的框架（CTFs）由于其大的连续π共轭结构、高的热稳定性和化学稳定性以及高效的电荷转移和分离能力，在太阳能驱动制氢方面具有强大潜力。本文综述了自首次研究以来CTFs的合成策略、功能优化及其在光催化析氢中的应用。最后，总结了CTFs制氢面临的挑战，并提出了材料改性的方向。
