Effective removal of organic contaminants present in water is of vital importance for water remediation, public health, and economic benefits. Photodegradation has been recognized as a low‐energy consumption, recyclable, and mild treatment method for the rapid, efficient, and complete removal of organic contaminants. Among various photocatalytic materials, metal‐free covalent organic frameworks (COFs) have gained considerable attention to serve as photocatalytic materials in water remediation owing to their highly ordered structures, high specific surface areas, tunable pore environment, superior light absorption, and adjustable electronic structures. This article presents a comprehensive review of design strategies and applications of photocatalytic metal‐free COFs for organic contaminants degradation. Specifically, strategies for enhancing the photocatalytic performance of metal‐free COFs are discussed spanning from monomer design to framework construction in detail. Then, an analysis of reported metal‐free COFs for the photodegradation of organic contaminants is summarized. Finally, the current challenges and future opportunities for metal‐free COFs are highlighted. This review is expected to provide guidance for the rational design of photocatalytic metal‐free COFs and serve as a useful reference for future studies in water remediation.
Guo et al. (Fri,) studied this question.
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