Vinyl-Group-Anchored Covalent Organic Framework for Promoting the Photocatalytic Generation of Hydrogen Peroxide.

Yu, Hong; Zhang, Fengtao; Chen, Qian; Zhou, Pan-Ke; Xing, Wandong; Wang, Sibo; Zhang, Guigang; Jiang, Yi; Chen, Xiong

Yu, Hong; Zhang, Fengtao; Chen, Qian; Zhou, Pan-Ke; Xing, Wandong; Wang, Sibo; Zhang, Guigang; Jiang, Yi; Chen, Xiong.

Afiliación

Yu H; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Zhang F; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Chen Q; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Zhou PK; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Xing W; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Wang S; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Zhang G; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
Jiang Y; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China.
Chen X; State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.

Angew Chem Int Ed Engl ; 63(21): e202402297, 2024 May 21.

Article en En | MEDLINE | ID: mdl-38488772

ABSTRACT

ABSTRACT

The artificial photosynthesis of H2O2 from water and oxygen using semiconductor photocatalysts is attracting increasing levels of attention owing to its green, environmentally friendly, and energy-saving characteristics. Although covalent organic frameworks (COFs) are promising materials for promoting photocatalytic H2O2 production owing to their structural and functional diversity, they typically suffer from low charge-generation and -transfer efficiencies as well as rapid charge recombination, which restricts their use as catalysts for photocatalytic H2O2 production. Herein, we report a strategy for anchoring vinyl moieties to a COF skeleton to facilitate charge separation and migration, thereby promoting photocatalytic H2O2 generation. This vinyl-group-bearing COF photocatalyst exhibits a H2O2-production rate of 84.5âµmol h-1 (per 10âmg), which is ten-times higher than that of the analog devoid of vinyl functionality and superior to most reported COF photocatalysts. Both experimental and theoretical studies provide deep insight into the origin of the improved photocatalytic performance. These findings are expected to facilitate the rational design and modification of organic semiconductors for use in photocatalytic applications.

Palabras clave

Charge separation; Covalent organic frameworks; H2O2 production; Photocatalysts; Vinyl groups

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