Photocatalytic performance study of LaFeO3/CQDs-g-C3Nx catalysts

WANG Yi-di; SUN You-wei; ZHOU Feng; MA Hui-xia; WANG Yan-juan; HU Shao-zheng; ZHANG Jian

doi:10.19906/j.cnki.JFCT.2022042

Volume 51 Issue 2

Jan. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(2): 215-224

WANG Yi-di, SUN You-wei, ZHOU Feng, MA Hui-xia, WANG Yan-juan, HU Shao-zheng, ZHANG Jian. Photocatalytic performance study of LaFeO3/CQDs-g-C3Nx catalysts[J]. Journal of Fuel Chemistry and Technology, 2023, 51(2): 215-224. doi: 10.19906/j.cnki.JFCT.2022042

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WANG Yi-di, SUN You-wei, ZHOU Feng, MA Hui-xia, WANG Yan-juan, HU Shao-zheng, ZHANG Jian. Photocatalytic performance study of LaFeO₃/CQDs-g-C₃N_x catalysts[J]. Journal of Fuel Chemistry and Technology, 2023, 51(2): 215-224. doi: 10.19906/j.cnki.JFCT.2022042

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Photocatalytic performance study of LaFeO₃/CQDs-g-C₃N_x catalysts

doi: 10.19906/j.cnki.JFCT.2022042

1.
School of Petrochemical Eneineering, Liaoning Petrochemical University, Fushun 113001, China
2.
Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116000, China

Funds: The project was supported by General Program of Liaoning Provincial Department of Science and Technology((2021-MS-308)) and the Project of Liaoning Provincial Department of Education(L2020016)

Received Date: 2022-04-19
Accepted Date: 2022-05-16
Rev Recd Date: 2022-05-14

Available Online: 2022-06-09

Publish Date: 2023-01-18

Abstract

Abstract

In this experiment, a Z-scheme nitrogen-deficient graphite-phase carbon nitride (LaFeO₃/CQDs-g-C₃N_x) composite photocatalyst was prepared. The catalyst was characterized by X-ray diffraction (XRD), ultraviolet-visible diffuse reflection (UV-Vis DRS), photoluminescence spectroscopy (PL), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results showed that the introduction of nitrogen defects and CQDs enhanced the migration efficiency of photogenerated carriers. The photocatalytic degradation rate of LaFeO₃/CQDs-g-C₃N_x composites for rhodamine B (RhB) was 3.98 times higher than that of pure g-C₃N₄, and had good photocatalytic stability. It also showed good degradation of antibiotics and other organic pollutants.
- Z-scheme heterojunction,
- nitrogen defects,
- carbon quantum dots,
- photocatalysis

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References(48)

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