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Phosphorous and selenium tuning Co-based non-precious catalysts for electrosynthesis of h_(2)o_(2)in acidic media

Chinese Chemical Letters 2024年第1期35卷 475-481页

作者： Jingxin Xie Lijie Zhong Xin Yang Dequan he Kanglong Lin Xiaoxia Chen huan Wang Shiyu Gan Li Niu Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials&Devices Guangzhou Key Laboratory of Sensing Materials&DevicesCenter for Advanced Analytical ScienceSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China Department of Chemistry and Environment Science Fujian Provincial Key Laboratory of Modern Analytical Science and Separation TechnologyMinnan Normal UniversityZhangzhou 363000China

Electrosynthesis of hydrogen peroxide(h2o2)is an on-site method that enables independent distribution applications in many fields due to its small-scale and sustainable *** crucial point remains developing highly active,selective and cost-effective *** electrosynthesis of h2o2 in acidic media is more practical owing to its stability and no need for further *** herein report a phosphorus and selenium tuning Co-based non-precious catalyst(CoPSe)toward two-electron oxygen reduction reaction(2e–oRR)to produce h2o2 in acidic *** starting point of using both P and Se is finding a balance between strong oRR activity of CoSe and weak activity of *** results demonstrated that the CoPSe catalyst exhibited the optimized 2e–oRR activity compared with CoP and *** disclosed an onset potential of 0.68 V and the h2o2 selectivity 76%-85%in a wide potential range(0–0.5 V).Notably,the CoPSe catalyst overcomes a significant challenge of a narrow-range selectivity for transitionmetal based 2e–oRR ***,combining with electro-Fenton reaction,an on-site system was constructed for efficient degradation of organic *** work provides a promising non-precious Co-based electrocatalyst for the electrosynthesis of h2o2 in acidic media.

关键词： oxygen reduction reaction electrochemical h2o2 production Electrocatalysis Non-precious electrocatalyst Acidic media

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