材料科学技术(英文版)2024，Vol.196Issue(29) ：40-49.DOI:10.1016/j.jmst.2024.01.048

2D/2D layered BiOIO3/g-C3N4 S-scheme heterojunction for photocatalytic NO oxidation

Xiaofeng Wu Ningxin Kang Xiaofang Li Zhihua Xu Sónia A.C.Carabineiro Kangle Lv
材料科学技术(英文版)2024，Vol.196Issue(29) ：40-49.DOI:10.1016/j.jmst.2024.01.048
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2D/2D layered BiOIO3/g-C3N4 S-scheme heterojunction for photocatalytic NO oxidation

Xiaofeng Wu 1Ningxin Kang 2Xiaofang Li 3Zhihua Xu 4Sónia A.C.Carabineiro 5Kangle Lv2
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作者信息

  • 1. College of Chemistry and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China;College of Resources and Environment,South-Central Minzu University,Wuhan 430074,China
  • 2. College of Resources and Environment,South-Central Minzu University,Wuhan 430074,China
  • 3. College of Chemistry and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China
  • 4. School of Optoelectronic Materials and Technology,Jianghan University,Wuhan 430056,China
  • 5. LAQV-REQUIMTE,Department of Chemistry,NOVA School of Science and Technology,Universidade NOVA de Lisboa Caparica,2829-516,Portugal
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Abstract

It is essential to promote interfacial separation and charge migration in heterojunctions for effectively driving surface photocatalytic reactions.In this work,we report the construction of a 2D/2D layered BiOIO3/g-C3N4(BIO/CN)heterojunction for photocatalytic NO removal.The BIO/CN heterojunction exhibits a remarkably higher NO photo-oxidation removal rate(46.9％)compared to pristine BIO(20.1％)and CN(25.9％)under visible-light irradiation.Additionally,it effectively suppresses the formation of toxic NO2 intermediates during photocatalytic reaction.The improved photocatalytic performance of BIO/CN com-posite is caused by its S-scheme charge carrier transport mechanism,which is supported by Density Functional Theory simulations of work function and electron density difference,along with in-situ irra-diated X-ray Photoelectron Spectroscopy and Electron Paramagnetic Resonance analyses.This S-scheme structure improves the interfacial carrier separation efficiency and retains the strong photo-redox ability.Our study demonstrates that construction of a S-scheme heterojunction is significant in the design and preparation of highly efficient photocatalysts for air purification.

Key words

BiOIO3/g-C3N4/S-scheme heterojunction/Photocatalysis/NOx removal

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基金项目

National Natural Science Foundation of China(22302153)

National Natural Science Foundation of China(51672312)

National Natural Science Foundation of China(21373275)

Key Research and Development Project of Hubei Province(2020BBB068)

jointed supported by the Hubei Provincial Natural Science Foundation and Huangshi of China(2022CFD001)

Educational Commission of Hubei Province(B2022253)

Unveils List System Science and Technology Project of Hubei Provincial Science and Technology Department(2021BEC016)

Research and Innovation Initiatives of WHPU(2023Y25)

Research and Innovation Initiatives of WHPU(2023Y26)

Fundamental Research Funds for the Central Universities of South-Central Minzu University(CZP22001)

Fundamental Research Funds for the Central Universities of South-Central Minzu University(CZZ21012)

Excellent Discipline Cultivation Project by JHUN(2023XKZ027)

FCT/MCTES(10.54499/LA/P/0008/2020)

FCT/MCTES(10.54499/UIDP/50006/2020)

FCT/MCTES(10.54499/UIDB/50006/2020)

FCT/MCTES(10.54499/CEECINST/00102/20)

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
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