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

• DOI: 10.1039/c8cc00957k
• Publication Date: 2018-04-04T12:34:07Z
• Authors: Lan-Zhen Peng; Pei Liu; Qing-Qing Cheng; Wen-Jing Hu; Yahu A. Liu; Jiu-Sheng Li; Biao Jiang; Xue-Shun Jia; Hui Yang; Ke Wen
• Keywords: Electrosynthesis; Cationic polymerization

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 two-dimensional redox-active cationic covalent triazine network be used directly as cost-effective metal-free electrocatalyst for reaction (ORR) form H2O2. Such dicationic 2D polymer possesses porous structure with pore diameters 2-10 nm total N content 13.3 wt%. The electron paramagnetic resonance experiment confirms viologen-based radical cations subsequent generation superoxygen radicals. characteristics high within this are essential efficient ORR via two-electron pathway. As result, present exhibits activity excellent H2O2 selectivity (∼85%), thus providing feasible possibility designing highly selective electrocatalysts electrocatalytic production from O2.