Phosphorous and selenium tuning Co-based non-precious catalysts for electrosynthesis of H2O2 in acidic media

Jingxin Xie ¹Lijie Zhong ¹Xin Yang ¹Dequan He ¹Kanglong Lin ¹Xiaoxia Chen ¹Huan Wang ¹Shiyu Gan ¹Li Niu²

扫码查看

作者信息

1. Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials & Devices,Guangzhou Key Laboratory of Sensing Materials &Devices,Center for Advanced Analytical Science,School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China
2. Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials & Devices,Guangzhou Key Laboratory of Sensing Materials &Devices,Center for Advanced Analytical Science,School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China;Department of Chemistry and Environment Science,Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology,Minnan Normal University,Zhangzhou 363000,China
折叠

Abstract

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 features.The crucial point remains de-veloping highly active,selective and cost-effective electrocatalysts.The electrosynthesis of H2O2 in acidic media is more practical owing to its stability and no need for further purification.We herein report a phosphorus and selenium tuning Co-based non-precious catalyst(CoPSe)toward two-electron oxygen re-duction reaction(2e-ORR)to produce H2O2 in acidic media.The starting point of using both P and Se is finding a balance between strong ORR activity of CoSe and weak activity of CoP.The results demonstrated that the CoPSe catalyst exhibited the optimized 2e-ORR activity compared with CoP and CoSe.It dis-closed 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 transition-metal based 2e ORR catalysts.Finally,combining with electro-Fenton reaction,an on-site system was constructed for efficient degradation of organic pollutants.This work provides a promising non-precious Co-based electrocatalyst for the electrosynthesis of H2O2 in acidic media.

Key words

Oxygen reduction reaction/Electrochemical H2O2 production/Electrocatalysis/Non-precious electrocatalyst/Acidic media

引用本文复制引用

基金项目

国家自然科学基金(21805052)

国家自然科学基金(21974031)

国家自然科学基金(2278092)

Science and Technology Research Project of Guangzhou(202102020787)

Science and Technology Research Project of Guangzhou(202201000002)

Department of Science& Technology of Guangdong Province(2022A156)

Key Discipline of Materials Science and Engineering,Bureau of Education of Guangzhou(20225546)

Innovation & Entrepreneurship for the College Students of Guangzhou University(XJ202111078175)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量53

段落导航