Amide-linked covalent organic frameworks as efficient heterogeneous photocatalysts in water

• Published in: Chinese journal of catalysis Vol. 42; no. 11; pp. 2010 - 2019
• Main Authors: Ma, Si, Li, Ziping, Jia, Ji, Zhang, Zhenwei, Xia, Hong, Li, He, Chen, Xiong, Xu, Yanhong, Liu, Xiaoming
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2021
• Subjects: Covalent organic frameworks; Dye degradation; Multiple synergies; Photocatalysis; Porous materials; Covalent organic frameworks; Dye degradation; Multiple synergies; Photocatalysis; Porous materials
• ISSN: 1872-2067; 1872-2067
• DOI: 10.1016/S1872-2067(21)63836-6

Semiconductor photocatalysts play an indispensable role in the photocatalytic process. Two-dimensional covalent organic frameworks (2D-COFs), as a kind of innovative photocatalyst, have garnered tremendous attention. Herein, we report an amide-linked 2D-COF (COF-JLU19) with outstanding photocatalytic performance in water, designed through a multi-synergistic approach. The synergistic effects of the high porosity, photoactive framework, high wettability, and stability of COF-JLU19 led to an unprecedented enhancement in the photocatalytic activity and recyclability in water upon illumination by visible light. More importantly, amide-linked 2D-COF based electrospinning membranes were prepared, which also exhibited superior photocatalytic activity for the degradation of Rhodamine B in water with sunlight. This study highlights the potential of the multi-synergistic approach as a universal rule for developing COF-based photocatalysts to address environmental and energy challenges. An amide-linked 2D-COF exhibits unprecedented photocatalytic performance, with excellent activity and recyclability in water, attributed to multiple synergistic effects involving the inherent porosity, large surface area, high crystallinity, good wettability and stability, as well as excellent photoelectric properties.