Nanostructured ZnO/BiVO<sub>4</sub> I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

Yiling Li; Xiaoyao Yu; Yingjie Zhou; Yao Lin; Ying Wu

doi:10.1007/s12613-024-2920-x

Volume 32 Issue 2

Feb. 2025

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2025 > 32(2): 488-497

Yiling Li, Xiaoyao Yu, Yingjie Zhou, Yao Lin, and Ying Wu, Nanostructured ZnO/BiVO₄ I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy, Int. J. Miner. Metall. Mater., 32(2025), No. 2, pp. 488-497. https://doi.org/10.1007/s12613-024-2920-x

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Yiling Li, Xiaoyao Yu, Yingjie Zhou, Yao Lin, and Ying Wu, Nanostructured ZnO/BiVO4 I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy, Int. J. Miner. Metall. Mater., 32(2025), No. 2, pp. 488-497. https://doi.org/10.1007/s12613-024-2920-x

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Research Article

Nanostructured ZnO/BiVO₄ I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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Corresponding author:
Ying Wu E-mail: yingwu@zjnu.cn
Received: 8 December 2023; Revised: 27 March 2024; Accepted: 18 April 2024; Available online: 19 April 2024

Abstract

Abstract

BiVO₄ porous spheres modified by ZnO were designed and synthesized using a facile two-step method. The resulting ZnO/BiVO₄ composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B (RhB) under mechanical vibrations, they exhibit superior activity compared to pure ZnO. The 40wt% ZnO/BiVO₄ heterojunction composite displayed the highest activity, along with good stability and recyclability. The enhanced piezoelectric catalytic activity can be attributed to the formation of an I-scheme heterojunction structure, which can effectively inhibit the electron-hole recombination. Furthermore, hole (h⁺) and superoxide radical ($\cdot \mathrm{O}_2^- $) are proved to be the primary active species. Therefore, ZnO/BiVO₄ stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.
- piezoelectric catalytic;
- heterojunction;
- dye degradation;
- ultrasonic vibration

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References(35)

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