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

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

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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.

BiOIO3g-C3N4S-scheme heterojunctionPhotocatalysisNOx removal

Xiaofeng Wu、Ningxin Kang、Xiaofang Li、Zhihua Xu、Sónia A.C.Carabineiro、Kangle Lv

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College of Chemistry and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China

College of Resources and Environment,South-Central Minzu University,Wuhan 430074,China

School of Optoelectronic Materials and Technology,Jianghan University,Wuhan 430056,China

LAQV-REQUIMTE,Department of Chemistry,NOVA School of Science and Technology,Universidade NOVA de Lisboa Caparica,2829-516,Portugal

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Research and Development Project of Hubei Provincejointed supported by the Hubei Provincial Natural Science Foundation and Huangshi of ChinaEducational Commission of Hubei ProvinceUnveils List System Science and Technology Project of Hubei Provincial Science and Technology DepartmentResearch and Innovation Initiatives of WHPUResearch and Innovation Initiatives of WHPUFundamental Research Funds for the Central Universities of South-Central Minzu UniversityFundamental Research Funds for the Central Universities of South-Central Minzu UniversityExcellent Discipline Cultivation Project by JHUNFCT/MCTESFCT/MCTESFCT/MCTESFCT/MCTES

2230215351672312213732752020BBB0682022CFD001B20222532021BEC0162023Y252023Y26CZP22001CZZ210122023XKZ02710.54499/LA/P/0008/202010.54499/UIDP/50006/202010.54499/UIDB/50006/202010.54499/CEECINST/00102/20

2024

10.1016/j.jmst.2024.01.048

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
年,卷(期)：2024.196(29)