Hydrogen peroxide is an important chemical for environmental applications and is also used in large-scale industrial processes. Recent studies have demonstrated photocatalytic production of H2O2, but to date, it is reminded as a challenge to development and efficient and cost-effective photocatalyst. Herein, covalent organic frameworks (COFs) were 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-COF has increased charge e-separation efficiencies and a better band alignment compared to its nitrogen containing analogue N<sub>3</sub>-COF. As expected, N0-COF has performed a higher performance for photocatalytic H2O2 production. The N0-COF-COF also exhibits great potential in photoelectrochemical H2O2 production and other advanced photocatalytic applications. With the support of experimental and theoretical research, this study reveals the importance of the rational design of metal-free materials in advanced photocatalytic applications.

Hydrogen peroxide is an important chemical for environmental applications and is also used in large-scale industrial processes. Recent studies have demonstrated photocatalytic production of H~2~O~2~, but to date, it is reminded as a challenge to development and efficient and cost-effective photocatalyst. Herein, covalent organic frameworks (COFs) were studied as photocatalysts for H~2~O~2~ production. Two related COFs show markedly different performances, which can be explained by the presence of donor-acceptor configurations in the backbone. N~0~-COF-COF has increased charge e-separation efficiencies and a better band alignment compared to its nitrogen containing analogue N<sub>3</sub>-COF. As expected, N~0~-COF has performed a higher performance for photocatalytic H~2~O~2~ production. The N~0~-COF-COF also exhibits great potential in photoelectrochemical H~2~O~2~ production and other advanced photocatalytic applications. With the support of experimental and theoretical research, this study reveals the importance of the rational design of metal-free materials in advanced photocatalytic applications.

Photocatalytic production of H2O2 by Covalent organic frameworks

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