中国化学快报(英文版)2024，Vol.35Issue(7) ：514-518.DOI:10.1016/j.cclet.2023.108926

Highly efficient electrosynthesis of H2O2 in acidic electrolyte on metal-free heteroatoms co-doped carbon nanosheets and simultaneously promoting Fenton process

Xiaodan Wang Yingnan Liu Zhibin Liu Zhongjian Li Tao Zhang Yi Cheng Lecheng Lei Bin Yang Yang Hou
中国化学快报(英文版)2024，Vol.35Issue(7) ：514-518.DOI:10.1016/j.cclet.2023.108926
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Highly efficient electrosynthesis of H2O2 in acidic electrolyte on metal-free heteroatoms co-doped carbon nanosheets and simultaneously promoting Fenton process

Xiaodan Wang 1Yingnan Liu 1Zhibin Liu 2Zhongjian Li 2Tao Zhang 3Yi Cheng 4Lecheng Lei 2Bin Yang 2Yang Hou5
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作者信息

  • 1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,China
  • 2. Key Laboratory of Biomass Chemical Engineering of Ministry of Education,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,China;Institute of Zhejiang University-Quzhou,Quzhou 324000,China
  • 3. Ningbo Institute of Materials Technology&Engineering,University of Chinese Academy of Sciences,Ningbo 315200,China
  • 4. Zhejiang Hengyi Petrochemical Research Institute Co.,Ltd.,Hangzhou 310058,China
  • 5. Key Laboratory of Biomass Chemical Engineering of Ministry of Education,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,China;Institute of Zhejiang University-Quzhou,Quzhou 324000,China;Donghai Laboratory,Zhoushan 316000,China;School of Biological and Chemical Engineering,NingboTech University,Ningbo 315100,China
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Abstract

Recently electrochemical synthesis of H2O2 through oxygen reduction reaction(ORR)via 2e- pathway is considered as a green and on-site route.However,it still remains a big challenge for fabricating novel metal-free catalysts under acidic solutions,since it suffers from high overpotential due to the intrinsically week *OOH adsorption.Herein,a co-doped carbon nanosheet(O/N-C)catalyst toward regulating O and N content was synthesized for improving the selectivity and activity of H2O2 electrosynthesis process.The O/N-C exhibits outstanding 2e-ORR performance with low onset potential of 0.4 V(vs.RHE)and a se-lectivity of 92.4％ in 0.1 mol/L HClO4 solutions.The in situ electrochemical impedance spectroscopy(EIS)tests reveals that the N incorporation contributes to the fast ORR kinetics.The density functional theory(DFT)calculations demonstrate that the binding strength of *OOH was optimized by the co-doping of oxygen and nitrogen at certain content,and the O/N-C-COOH site exhibits a lower theoretical overpoten-tial for H2O2 formation than O-C-COOH site.Furthermore,the promoted kinetics for typical organic dye degradation in simultaneous electron-Fenton process on O/N-C catalyst was demonstrated particularly for broadening its environmental application.

Key words

Oxygen reduction/Metal-free catalyst/H2O2 electrosynthesis/N doping/Carbon materials

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基金项目

National Natural Science Foundation of China(U22A20432)

National Natural Science Foundation of China(22278364)

National Natural Science Foundation of China(22211530045)

National Natural Science Foundation of China(22178308)

Fundamental Research Funds for the Central Universities(226-2022-00044)

Fundamental Research Funds for the Central Universities(226-2022-00055)

Research Funds of Institute of Zhejiang University-Quzhou(IZQ2021KJ2003)

National Key Research and Development Program of China(2022YFB4002100)

development project of Zhejiang Province's"Jianbing"and"Lingyan"(2023C01226)

Startup Foundation for Hundred-Talent Program of Zhejiang University,the Science Foundation of Donghai Laboratory(DH-2022ZY0009)

Zhejiang University Global Partnership Fund,the China Postdoctoral Science Foundation(2021M702813)

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43
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