Ⅰ型异质结构纳米ZnO/BiVO<sub>4</sub>复合物压电催化降解有机染料

李一玲; 余逍遥; 周英杰; 林瑶; 吴瑛

doi:10.1007/s12613-024-2920-x

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文章导航 > 矿物冶金与材料学报（英文） > 2024 > 一校

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.,(2024). 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.,(2024). https://doi.org/10.1007/s12613-024-2920-x

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研究论文

Ⅰ型异质结构纳米ZnO/BiVO₄复合物压电催化降解有机染料

浙江师范大学化学与材料科学学院, 金华 321004, 中国

通讯作者:
吴瑛 E-mail: yingwu@zjnu.cn

文章亮点

(1) ZnO/BiVO₄催化剂首次应用于染料的压电催化降解

(2) ZnO与BiVO₄复合增强了电荷分离能力从而具有更好的活性

(3) 复合催化剂的Ⅰ型异质结构有利于提高反应性能

(4) 40%ZnO/BiVO₄显示出最高的活性和良好的可回收性

中文摘要

压电催化能够利用自然界中的低频机械能来实现污染物的降解，具有广泛的应用前景。目前钙钛矿材料BiVO₄在压电领域的应用很少。因此，本文以BiVO₄为研究对象，通过构建异质结来对其进行改性，高效地抑制电荷载体重组，从而提高载流子分离效率，提升压电催化性能，为压电催化领域高效催化剂的设计提供一种新策略。采用两步法成功制备了由ZnO和BiVO₄纳米球组成的ZnO/ BiVO₄ Ⅰ型异质结，在降解RhB方面表现出比纯ZnO或BiVO₄更好的压电催化性能。ZnO和BiVO₄的协同作用增强了压电催化活性，有效地分离了电子空穴对，有利于污染物的降解。40% ZnO/BiVO₄催化剂上可获得最佳的反应性能，RhB的降解速率常数为0.0765 min^-1。此外，·O₂^-和h⁺作为反应活性物种能有效稳定地降解有机污染物。因此，Ⅰ型异质结构的ZnO/ BiVO₄复合催化剂作为一种环境修复压电催化剂具有巨大的潜力，可为开发新型半导体异质结的实际应用提供新的见解。

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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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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 (·O₂^–) 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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Ⅰ型异质结构纳米ZnO/BiVO₄复合物压电催化降解有机染料

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

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Ⅰ型异质结构纳米ZnO/BiVO4复合物压电催化降解有机染料

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中文摘要

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

Abstract

References

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Ⅰ型异质结构纳米ZnO/BiVO₄复合物压电催化降解有机染料

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