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

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

扫码查看
原文链接
  • 万方数据
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.

Oxygen reductionMetal-free catalystH2O2 electrosynthesisN dopingCarbon materials

Xiaodan Wang、Yingnan Liu、Zhibin Liu、Zhongjian Li、Tao Zhang、Yi Cheng、Lecheng Lei、Bin Yang、Yang Hou

展开 >

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

Ningbo Institute of Materials Technology&Engineering,University of Chinese Academy of Sciences,Ningbo 315200,China

Zhejiang Hengyi Petrochemical Research Institute Co.,Ltd.,Hangzhou 310058,China

Donghai Laboratory,Zhoushan 316000,China

School of Biological and Chemical Engineering,NingboTech University,Ningbo 315100,China

展开 >

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesResearch Funds of Institute of Zhejiang University-QuzhouNational Key Research and Development Program of Chinadevelopment project of Zhejiang Province's"Jianbing"and"Lingyan"Startup Foundation for Hundred-Talent Program of Zhejiang University,the Science Foundation of Donghai LaboratoryZhejiang University Global Partnership Fund,the China Postdoctoral Science Foundation

U22A20432222783642221153004522178308226-2022-00044226-2022-00055IZQ2021KJ20032022YFB40021002023C01226DH-2022ZY00092021M702813

2024

10.1016/j.cclet.2023.108926

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(7)