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Issue 35, 2018
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Highly effective electrosynthesis of hydrogen peroxide from oxygen on a redox-active cationic covalent triazine network

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Abstract

Direct electrosynthesis of hydrogen peroxide (H2O2) by oxygen reduction is a green and safe strategy to replace the traditional anthraquinone process. Herein, we have designed a two-dimensional redox-active cationic covalent triazine network to be used directly as a cost-effective metal-free electrocatalyst for the oxygen reduction reaction (ORR) to form H2O2. Such a dicationic 2D polymer possesses a porous structure with pore diameters of 2–10 nm and a total N content of 13.3 wt%. The electron paramagnetic resonance experiment confirms the reduction of a viologen-based polymer to radical cations and the subsequent generation of superoxygen radicals. The radical characteristics and high N content within this polymer are the essential for the efficient ORR via a two-electron pathway. As a result, the present electrocatalyst exhibits a high ORR activity and excellent H2O2 selectivity (∼85%), thus providing a feasible possibility of designing highly selective metal-free electrocatalysts for electrocatalytic production of H2O2 from O2.

Graphical abstract: Highly effective electrosynthesis of hydrogen peroxide from oxygen on a redox-active cationic covalent triazine network

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Publication details

The article was received on 03 Feb 2018, accepted on 04 Apr 2018 and first published on 04 Apr 2018


Article type: Communication
DOI: 10.1039/C8CC00957K
Citation: Chem. Commun., 2018,54, 4433-4436
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    Highly effective electrosynthesis of hydrogen peroxide from oxygen on a redox-active cationic covalent triazine network

    L. Peng, P. Liu, Q. Cheng, W. Hu, Y. A. Liu, J. Li, B. Jiang, X. Jia, H. Yang and K. Wen, Chem. Commun., 2018, 54, 4433
    DOI: 10.1039/C8CC00957K

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