Mixed‐Linker Strategy for the Construction of Sulfone‐Containing D–A–A Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Peroxide Production

• DOI: 10.1002/anie.202403926
• Publication Date: 2024-02-28T08:18:55Z
• Authors: Chang Shu; Xiaoju Yang; Lunjie Liu; Xunliang Hu; Ruixue Sun; Xuan Yang; Andrew I. Cooper; Bien Tan; Xiaoyan Wang
• Keywords: Acceptor; Covalent organic framework; Sulfone

Abstract The solar‐driven photocatalytic production of hydrogen peroxide (H 2 O ) from water and oxygen using semiconductor catalysts offers a promising approach for converting solar energy into storable chemical energy. However, the efficiency H is often restricted by low photo‐generated charge separation, slow surface reactions inadequate stability. Here, we developed mixed‐linker strategy to build donor‐acceptor‐acceptor (D–A–A) type covalent organic framework (COF) photocatalyst, FS‐OHOMe‐COF. FS‐OHOMe‐COF structure features extended π–π conjugation that improves mobility, while introduction sulfone units not only as active sites facilitates with but also bolsters stability through increased interlayer forces. resulting has exciton binding energy, long excited‐state lifetime high photo‐stability leads performance (up 1.0 mM h −1 an output 19 after 72 hours irradiation. Furthermore, catalyst demonstrates stability, which sustained activity over 192 experiment.