全球范围内化石燃料的大量消耗导致了能源危机,同时其所排放的CO₂等温室气体使环境问题日渐突出。将CO₂等废气进一步转化为高附加值燃料是解决能源与环境问题的理想方案。利用取之不尽的太阳能作为能源实现光催化CO₂还原为能源化合物被认为是有效解决此问题的最佳途径之一。共价有机框架材料(COFs)是一类新型晶态多孔有机聚合物材料,具有结构稳定性、可设计性和结构多样化的特征,因此在光催化CO₂还原领域表现出了巨大潜力。本文概述了近年来COFs在光催化CO₂还原领域中的催化应用研究进展,包括引入不同金属离子提供活性位点、增加光敏性官能团提高其对可见光利用率等方法。最后对以COFs材料为光催化CO₂还原催化剂的研究进行了总结和展望,我们认为更进一步的新材料合成、修饰与催化机理研究仍是前景广阔的研究领域。

With the massive global consumption of fossil fuels, the energy crisis is getting worse and the emission of greenhouse gases such as CO₂ has made the environmental problems become increasingly prominent. Photocatalytic reduction of CO₂ to energy compounds is considered to be one of the best ways to effectively solve this problem. Covalent organic frameworks (COFs) are a new type of crystalline porous organic polymer materials with high stability and pre-design ability, which makes COFs own great potential ability in the field of photocatalytic CO₂ reduction. This paper summarizes the research progress of COFs in the field of photocatalytic CO₂ reduction, including the introduction of different metal ions to provide the active site and increasing the photosensitive functional groups to improve their utilization of visible light. Since the research of COFs as photocatalytic CO₂ reduction catalyst is still an initial field, further exploration of synthesis, modification, and mechanism of COFs for CO₂ reduction is still promising research work.