Directly Unveiling the Photothermal Corrosion of BiVO4 via In-situ Transmission Electron Microscopy

doi:10.1007/s40242-025-5007-y

高等学校化学研究 ›› 2025, Vol. 41 ›› Issue (2): 351-357.doi: 10.1007/s40242-025-5007-y

Directly Unveiling the Photothermal Corrosion of BiVO₄ via In-situ Transmission Electron Microscopy

WANG Lindong^1,2, SUN Jingyi^1,2, WANG Lang^1,2, LI Yu¹, HU Zhiyi^1,2, SU Baolian^1,3

1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering (ISME), Wuhan University of Technology, Wuhan 430070, P. R. China;
2. Nanostructure Research Centre (NRC), Wuhan University of Technology, Wuhan 430070, P. R. China;
3. CMI (Laboratory of Inorganic Materials Chemistry), University of Namur, rue de Bruxelles 61, B-5000 Namur, Belgium

收稿日期:2025-01-08 接受日期:2025-02-14 出版日期:2025-04-01 发布日期:2025-03-31
通讯作者: HU Zhiyi,zhiyi.hu@whut.edu.cn E-mail:zhiyi.hu@whut.edu.cn
基金资助:
This work was supported by the National Key R&D Program of China (No. 2021YFE0115800), the National Natural Science Foundation of China (Nos. 22275142, 22293020, 22293022, U22B6011, U20A20122, 52103285), the Program of Introducing Talents of Discipline to Universities-Plan ‘111’ from the Ministry of Science and Technology and the Ministry of Education of China (No. B20002), the Natural Science Foundation of Hubei Province, China (No. 2023AFB605), and the Dawning Program of Wuhan, China (No. 2023020201020306).

Directly Unveiling the Photothermal Corrosion of BiVO₄ via In-situ Transmission Electron Microscopy

WANG Lindong^1,2, SUN Jingyi^1,2, WANG Lang^1,2, LI Yu¹, HU Zhiyi^1,2, SU Baolian^1,3

1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering (ISME), Wuhan University of Technology, Wuhan 430070, P. R. China;
2. Nanostructure Research Centre (NRC), Wuhan University of Technology, Wuhan 430070, P. R. China;
3. CMI (Laboratory of Inorganic Materials Chemistry), University of Namur, rue de Bruxelles 61, B-5000 Namur, Belgium

Received:2025-01-08 Accepted:2025-02-14 Online:2025-04-01 Published:2025-03-31
Contact: HU Zhiyi,zhiyi.hu@whut.edu.cn E-mail:zhiyi.hu@whut.edu.cn
Supported by:
This work was supported by the National Key R&D Program of China (No. 2021YFE0115800), the National Natural Science Foundation of China (Nos. 22275142, 22293020, 22293022, U22B6011, U20A20122, 52103285), the Program of Introducing Talents of Discipline to Universities-Plan ‘111’ from the Ministry of Science and Technology and the Ministry of Education of China (No. B20002), the Natural Science Foundation of Hubei Province, China (No. 2023AFB605), and the Dawning Program of Wuhan, China (No. 2023020201020306).

摘要/Abstract

摘要： BiVO₄ (BVO) is widely utilized in photothermal catalysis because of its favorable bandgap structure (2.4 eV), excellent photo response capabilities and high thermal stability. However, the mechanism of BVO photothermal corrosion still remains unclear due to the lack of visualized characterization on the degradation process in real time. Herein, we directly unveil the photothermal-induced microstructural evolution of BVO through in-situ heating (scanning) transmission electron microscopy [(S)TEM]. The results indicate that the electrons are the initiating condition (“switch”) for the photothermal corrosion of BVO, resulting in the precipitation of Bi and reduction of V⁵⁺ to V³⁺ in the substrate, while the thermal field facilitates the evaporation of Bi and the recrystallization of V₂O₃. This work sheds light on the mechanism of BVO photothermal corrosion in dynamics and provides significant insights into the photothermal synergistic effects.

关键词: BiVO₄, Photothermal corrosion, In-situ transmission electron microscopy (TEM), Photothermal catalysis, Structural evolution

Abstract: BiVO₄ (BVO) is widely utilized in photothermal catalysis because of its favorable bandgap structure (2.4 eV), excellent photo response capabilities and high thermal stability. However, the mechanism of BVO photothermal corrosion still remains unclear due to the lack of visualized characterization on the degradation process in real time. Herein, we directly unveil the photothermal-induced microstructural evolution of BVO through in-situ heating (scanning) transmission electron microscopy [(S)TEM]. The results indicate that the electrons are the initiating condition (“switch”) for the photothermal corrosion of BVO, resulting in the precipitation of Bi and reduction of V⁵⁺ to V³⁺ in the substrate, while the thermal field facilitates the evaporation of Bi and the recrystallization of V₂O₃. This work sheds light on the mechanism of BVO photothermal corrosion in dynamics and provides significant insights into the photothermal synergistic effects.

Key words: BiVO₄, Photothermal corrosion, In-situ transmission electron microscopy (TEM), Photothermal catalysis, Structural evolution

WANG Lindong, SUN Jingyi, WANG Lang, LI Yu, HU Zhiyi, SU Baolian. Directly Unveiling the Photothermal Corrosion of BiVO₄ via In-situ Transmission Electron Microscopy[J]. 高等学校化学研究, 2025, 41(2): 351-357.

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Directly Unveiling the Photothermal Corrosion of BiVO₄ via In-situ Transmission Electron Microscopy

Directly Unveiling the Photothermal Corrosion of BiVO₄ via In-situ Transmission Electron Microscopy

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