Bi5O7I/g-C3N4 Heterostructures With Enhanced Visible-Light Photocatalytic Performance for Degradation of Tetracycline Hydrochloride

Yang Yang; Yang Yang; Min Lai; Min Lai; Jialei Huang; Jialei Huang; Jinze Li; Jinze Li; Ruijie Gao; Ziming Zhao; Ziming Zhao; Huatang Song; Huatang Song; Jixiang He; Jixiang He; Yan Ma

doi:10.3389/fchem.2021.781991

Frontiers in Chemistry (Dec 2021)

Bi5O7I/g-C3N4 Heterostructures With Enhanced Visible-Light Photocatalytic Performance for Degradation of Tetracycline Hydrochloride

Yang Yang,
Yang Yang,
Min Lai,
Min Lai,
Jialei Huang,
Jialei Huang,
Jinze Li,
Jinze Li,
Ruijie Gao,
Ziming Zhao,
Ziming Zhao,
Huatang Song,
Huatang Song,
Jixiang He,
Jixiang He,
Yan Ma

Affiliations

Yang Yang: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Yang Yang: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Min Lai: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Min Lai: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Jialei Huang: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Jialei Huang: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Jinze Li: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Jinze Li: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Ruijie Gao: NUIST Reading Academy, Nanjing University of Information Science and Technology, Nanjing, China
Ziming Zhao: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Ziming Zhao: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Huatang Song: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Huatang Song: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Jixiang He: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing, China
Jixiang He: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, China
Yan Ma: NUIST Reading Academy, Nanjing University of Information Science and Technology, Nanjing, China

DOI: https://doi.org/10.3389/fchem.2021.781991
Journal volume & issue: Vol. 9

Abstract

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Bi5O7I/g-C3N4 p-n junctioned photocatalysts were synthesized by alcohol-heating and calcination in air. The structures, morphologies and optical properties of as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–Vis diffuse reflectance spectroscopy (DRS). Photocatalytic activity of the heterojunctioned composites were evaluated by degradation of Rhodamine B (RhB) and tetracycline hydrochloride (TCH) under visible light illumination. The results indicated that the composites exhibited superior efficiencies for photodegradation of RhB and TCH in comparison with pure BiOI, Bi5O7I and g-C3N4. An effective built-in electric field was formed by the interface between p-type Bi5O7I and n-type g-C3N4, which promoted the efficient separation of photoinduced electron-hole pairs. In addition, 8% Bi5O7I/g-C3N4 composite showed excellent photostability in a five-cycle photocatalytic experiment. Experiments on scavenging active intermediates revealed the roles of active species.

Published in Frontiers in Chemistry

ISSN: 2296-2646 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: http://journal.frontiersin.org/journal/chemistry

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