Accelerated Synthesis and Discovery of Covalent Organic Framework Photocatalysts for Hydrogen Peroxide Production



Zhao, Wei ORCID: 0000-0003-0265-2590, Yan, Peiyao, Li, Boyu, Bahri, Mounib ORCID: 0000-0002-8336-9158, Liu, Lunjie, Zhou, Xiang, Clowes, Rob, Browning, Nigel D ORCID: 0000-0003-0491-251X, Wu, Yue, Ward, John W ORCID: 0000-0001-7186-6416
et al (show 1 more authors) (2022) Accelerated Synthesis and Discovery of Covalent Organic Framework Photocatalysts for Hydrogen Peroxide Production. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 144 (22). pp. 9902-9909.

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Abstract

A high-throughput sonochemical synthesis and testing strategy was developed to discover covalent organic frameworks (COFs) for photocatalysis. In total, 76 conjugated polymers were synthesized, including 60 crystalline COFs of which 18 were previously unreported. These COFs were then screened for photocatalytic hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) production using water and oxygen. One of these COFs, sonoCOF-F2, was found to be an excellent photocatalyst for photocatalytic H<sub>2</sub>O<sub>2</sub> production even in the absence of sacrificial donors. However, after long-term photocatalytic tests (96 h), the imine sonoCOF-F2 transformed into an amide-linked COF with reduced crystallinity and loss of electronic conjugation, decreasing the photocatalytic activity. When benzyl alcohol was introduced to form a two-phase catalytic system, the photostability of sonoCOF-F2 was greatly enhanced, leading to stable H<sub>2</sub>O<sub>2</sub> production for at least 1 week.

Item Type: Article
Uncontrolled Keywords: 7 Affordable and Clean Energy
Divisions: Faculty of Science and Engineering > School of Engineering
Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 07 Jul 2022 11:55
Last Modified: 15 Mar 2024 13:43
DOI: 10.1021/jacs.2c02666
Open Access URL: https://doi.org/10.1021/jacs.2c02666
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3157943