Rational design of covalent organic frameworks for efficient photocatalytic hydrogen peroxide production

Chai, Shuming and Chen, Xiaowen and Zhang, Xirui and Fang, Yuanxing and Sprick, Reiner Sebastian and Chen, Xiong (2022) Rational design of covalent organic frameworks for efficient photocatalytic hydrogen peroxide production. Environmental Science: Nano, 9 (7). pp. 2464-2469. ISSN 2051-8153 (https://doi.org/10.1039/d2en00135g)

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Abstract

Hydrogen peroxide (H2O2) is an important chemical for environmental applications and also used in large-scale industrial processes. Recent studies have demonstrated photocatalytic production of H2O2, but the observed production rates are low, making the materials unpractical for applications at scale. Herein, covalent organic frameworks (COFs) have been studied as photocatalysts for H2O2 production. Two related COFs show markedly different performances, which can be explained by the presence of donor–acceptor configurations in the backbone. N0-COF has increased charge-separation efficiencies and a better band alignment compared to its nitrogen containing analogue N3-COF. The result is that N0-COF has a H2O2 production rate of 15.7 μmol h−1 for 10 mg, which is ten times higher compared to N3-COF. In this study, both experimental and theoretical studies have been used to understand the improved performance. This study reveals the importance of the backbone design of metal-free materials for advanced photocatalytic applications.

  • Item type:Article
    ID code:83400
    Dates:
    Date
    Event
    1 July 2022
    Published
    31 May 2022
    Published Online
    30 May 2022
    Accepted
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:02 Dec 2022 14:43
    Last modified:19 Apr 2024 22:59
    URI:https://strathprints.strath.ac.uk/id/eprint/83400
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