TY - JOUR
T1 - 2D/2D layered BiOIO3/g-C3N4 S-scheme heterojunction for photocatalytic NO oxidation
AU - Wu, Xiaofeng
AU - Kang , Ningxin
AU - Li, Xiaofang
AU - Xu, Zhihua
AU - Carabineiro, Sónia A. C.
AU - Lv, Kangle
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China (Nos. 22302153, 51672312 and 21373275), the Key Research and Development Project of Hubei Province (No. 2020BBB068), jointed supported by the Hubei Provincial Natural Science Foundation and Huangshi of China (No. 2022CFD001), the Educational Commission of Hubei Province (No. B2022253), the Unveils List System Science and Technology Project of Hubei Provincial Science and Technology Department (No. 2021BEC016), the Research and Innovation Initiatives of WHPU (Nos. 2023Y25 & 2023Y26), the Fundamental Research Funds for the Central Universities of South-Central Minzu University (Nos. CZP22001 and CZZ21012), and the Excellent Discipline Cultivation Project by JHUN (No. 2023XKZ027), as well as FCT/MCTES (DOIs: 10.54499/LA/P/0008/2020, 10.54499/UIDP/50006/2020, 10.54499/UIDB/50006/2020, and 10.54499/CEECINST/00102/2018/CP1567/CT0026).
Publisher Copyright:
© 2024
PY - 2024/10/10
Y1 - 2024/10/10
N2 - 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 composite 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 irradiated 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.
AB - 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 composite 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 irradiated 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.
KW - BiOIO
KW - g-CN
KW - NO removal
KW - Photocatalysis
KW - S-scheme heterojunction
UR - http://www.scopus.com/inward/record.url?scp=85190245105&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2024.01.048
DO - 10.1016/j.jmst.2024.01.048
M3 - Article
AN - SCOPUS:85190245105
SN - 1005-0302
VL - 196
SP - 40
EP - 49
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -