Yang Jinglun, Chen Zihao, Zhang Lei, Zhang Qichun
Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China.
Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF) & Hong Kong Institute of Clean Energy (HKICE), City University of Hong Kong, Hong Kong, SAR 999077, China.
ACS Nano. 2024 Aug 20;18(33):21804-21835. doi: 10.1021/acsnano.4c06783. Epub 2024 Aug 8.
Covalent organic frameworks (COFs) are crystalline networks with extended backbones cross-linked by covalent bonds. Due to the semiconductive properties and variable metal coordinating sites, along with the rapid development in linkage chemistry, the utilization of COFs in photocatalytic CORR has attracted many scientists' interests. In this Review, we summarize the latest research progress on variable COFs for photocatalytic CO reduction. In the first part, we present the development of COF linkages that have been used in CORR, and we discuss four mechanisms including COFs as intrinsic photocatalysts, COFs with photosensitive motifs as photocatalysts, metalated COF photocatalysts, and COFs with semiconductors as heterojunction photocatalysts. Then, we summarize the principles of structural designs including functional building units and stacking mode exchange. Finally, the outlook and challenges have been provided. This Review is intended to give some guidance on the design and synthesis of diverse COFs with different linkages, various structures, and divergent stacking modes for the efficient photoreduction of CO.
共价有机框架（COFs）是具有通过共价键交联的延伸骨架的晶体网络。由于其半导体特性和可变的金属配位位点，以及连接化学的快速发展，COFs在光催化CO还原反应（CORR）中的应用引起了许多科学家的兴趣。在本综述中，我们总结了用于光催化CO还原的可变COFs的最新研究进展。在第一部分，我们介绍了已用于CORR的COF连接体的发展，并讨论了四种机制，包括COFs作为本征光催化剂、具有光敏基序的COFs作为光催化剂、金属化COF光催化剂以及具有半导体作为异质结光催化剂的COFs。然后，我们总结了结构设计的原则，包括功能构建单元和堆积模式交换。最后，给出了展望和挑战。本综述旨在为设计和合成具有不同连接体、各种结构和不同堆积模式的多种COFs以实现高效的CO光还原提供一些指导。
