文献类型：期刊文献

英文题名：Synergistic interface engineering of submerged cathode with internal aeration and surface modification for efficient electrosynthesis of hydrogen peroxide

作者：Hu, Huawei[1,5];Hu, Jinwen[1,5];Xie, Wanghong[1,5];Zhang, Xinwan[1,5];Yang, Zhengwu[1,5];Xiao, Tao[1,5];Wang, Ke[1,2,5];Yin, Di[4];Jia, Daqing[1,5];Lu, Zhihao[1,3,5];Zhang, Lehua[1,2,5,6]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, Shihezi 832003, Xinjiang, Peoples R China;[3]Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China;[4]City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China;[5]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[6]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2025

卷号：377

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20253018833550);WOS:【SCI-EXPANDED(收录号:WOS:001539906800008)】；

基金：This work was supported by the National Natural Science Foundation

语种：英文

外文关键词：Hydrogen peroxide; Electrosynthesis; Internal aeration; Synergistic interfacial enhancement; Oxygen concentration distribution

摘要：The electrochemical two-electron oxygen reduction reaction (2e- ORR) plays an important role in the electrosynthesis of hydrogen peroxide (H2O2). Nonetheless, the conventional configuration of the electrode or reactor limited the 2e- ORR kinetics, resulting in low H2O2 yields. Additionally, the high costs associated with these systems hinder practical applications. Herein, we proposed a new strategy to simultaneously improve the mass transfer and interfacial reaction microenvironment through the surface and aeration modification of the simple submerged electrode for high-performance H2O2 production. The three-phase interfaces (TPIs) on electrode for 2e- ORR were first modulated under the internally aerated conditions with superior mass transfer. The design of aeration from the interior of the surface-modified cathode facilitated the mass transfer, promoted uniform oxygen concentration distribution across the cathode surface, and improved the interfacial reaction microenvironment, thereby boosting the H2O2 production. Under optimal conditions, the undoped electrocatalytic system achieved a remarkable H2O2 yield of 9.91 mg h- 1 cm- 2 (644.53 mg L-1h- 1) with a 51.6 % faradaic efficiency at a low current density of 40 mA cm- 2 and a small airflow rate of 0.1 L min- 1. The long-term electrolysis stability and more than 99 % degradation of methyl orange demonstrated the great potential of the synergistic interfacial enhancement of electrode modification and internal aeration for cost-effective H2O2 production and environmental remediation applications.