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Nano Research 2024, 17(6): 4729-4736 https://doi.org/10.1007/s12274-023-6408-1
Research Article | Issue | Published: 29 December 2023

Fabrication of MXene-Bi2WO6 heterojunction by Bi2Ti2O7 hinge for extraordinary LED-light-driven photocatalytic performance

Show Author's Information Zhiwen Li2,5,§,  Liangliang Xu4,§,  Zaheer Ud Din Babar3,  Ali Raza3,  Yifei Zhang1( ),  Xinrui Gu2,  Yu-Xin Miao1,  Zhen Zhao1,  Gao Li1,2,5( )
Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Scuola Superiore Meridionale (SSM), University of Naples Federico II, Largo S. Marcellino, 10, 80138, Italy
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
University of Chinese Academy of Sciences, Beijing 100049, China

§ Zhiwen Li and Liangliang Xu contributed equally to this work.

Keywords:
heterojunction, MXene-Bi2WO6, LED-light-driven photocatalysis, Bi2Ti2O7, photooxidation
Topics:
Catalytic
An erratum to this article is available online at https://doi.org/10.1007/s12274-024-6493-9
Cite this article:
Li Z, Xu L, Babar ZUD, et al. Fabrication of MXene-Bi2WO6 heterojunction by Bi2Ti2O7 hinge for extraordinary LED-light-driven photocatalytic performance. Nano Research, 2024, 17(6): 4729-4736. https://doi.org/10.1007/s12274-023-6408-1
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Abstract Full text Electronic supplementary material About this article

Heterojunction composites with intimate interfaces can shorten the diffusion distance, which leads to a shorter path for photogenerated carriers, thereby increasing photocatalytic activity. Herein, we report the fabrication of Ti3C2-Bi2WO6 (TC-BW) heterojunctions hinged by Bi2Ti2O7 joints via an in situ hydrothermal reaction of Ti3C2 in the presence of Na2WO4 and Bi(NO3)3. The TC-BW was characterized using X-ray diffraction (XRD), scanning transmission electron microscopy (STEM), and Raman spectroscopy. TC-BW showed superior photocatalytic activity (productivity over 15TC-WB reaches up to 5.0 mmolreacted BA·gcat.−1·h−1) in the oxidation of benzyl alcohol using light-emitting diode (LED) light, arising from the surface defects and intimate heterojunction interface between the Ti3C2 MXene and Bi2WO6 nanosheets. TC-BW heterojunctions provide an enhanced separation efficiency of photogenerated charges, which in turn yields superior photocatalytic activity. Furthermore, it is well substantiated by density functional theory (DFT) calculations. In summary, this study elucidates the preparation of heterojunction composites with intimate interfaces for highly efficient photooxidation.


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Electronic supplementary material
About this article

Fabrication of MXene-Bi2WO6 heterojunction by Bi2Ti2O7 hinge for extraordinary LED-light-driven photocatalytic performance

Show Author's information Zhiwen Li2,5,§, Liangliang Xu4,§, Zaheer Ud Din Babar3, Ali Raza3, Yifei Zhang1( ), Xinrui Gu2, Yu-Xin Miao1, Zhen Zhao1, Gao Li1,2,5( )
Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Scuola Superiore Meridionale (SSM), University of Naples Federico II, Largo S. Marcellino, 10, 80138, Italy
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
University of Chinese Academy of Sciences, Beijing 100049, China

§ Zhiwen Li and Liangliang Xu contributed equally to this work.

Abstract

Heterojunction composites with intimate interfaces can shorten the diffusion distance, which leads to a shorter path for photogenerated carriers, thereby increasing photocatalytic activity. Herein, we report the fabrication of Ti3C2-Bi2WO6 (TC-BW) heterojunctions hinged by Bi2Ti2O7 joints via an in situ hydrothermal reaction of Ti3C2 in the presence of Na2WO4 and Bi(NO3)3. The TC-BW was characterized using X-ray diffraction (XRD), scanning transmission electron microscopy (STEM), and Raman spectroscopy. TC-BW showed superior photocatalytic activity (productivity over 15TC-WB reaches up to 5.0 mmolreacted BA·gcat.−1·h−1) in the oxidation of benzyl alcohol using light-emitting diode (LED) light, arising from the surface defects and intimate heterojunction interface between the Ti3C2 MXene and Bi2WO6 nanosheets. TC-BW heterojunctions provide an enhanced separation efficiency of photogenerated charges, which in turn yields superior photocatalytic activity. Furthermore, it is well substantiated by density functional theory (DFT) calculations. In summary, this study elucidates the preparation of heterojunction composites with intimate interfaces for highly efficient photooxidation.

Keywords: heterojunction, MXene-Bi2WO6, LED-light-driven photocatalysis, Bi2Ti2O7, photooxidation

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Publication history
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Acknowledgements

Publication history

Received: 09 October 2023
Revised: 11 December 2023
Accepted: 11 December 2023
Published: 29 December 2023
Issue date: June 2024

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

We are grateful for the financial support provided by the National Natural Science Foundation of China (Nos. 22172167 and 22272112).

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