A novel direct Z-scheme heterojunction BiFeO3/ZnFe(2)O(4 )photocatalyst for enhanced photocatalyst degradation activity under visible light irradiation

Jiang, Xue ¹Wang, Zhihao ¹Zhang, Mengxuan ¹Wang, Mutong ¹Wu, Ruixue ¹Shi, Xiaoqing ¹Luo, Bingni ¹Zhang, Dafeng ¹Pu, Xipeng ¹Li, Hengshuai¹

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作者信息

1. Liaocheng Univ
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Abstract

In recent years, inhibition of photoinduced electron and hole recombination is considered as a breakthrough to improve the photocatalytic degradation of pollutants. In this study, we successfully loaded ZnFe2O4 (ZFO) microsphere onto BiFeO3 (BFO) microcubes via a simple hydrothermal method, and intimate interface between BFO and ZFO was constructed. Under the effect of heterojunction between BFO and ZFO, the recombination rate of photogenerated electron-hole pairs was decreased significantly, leading to the enhanced photocatalytic effect. The photocatalytic experiments show that the degradation efficiency of BFO/ ZFO-10% composite for tetracycline and methylene blue are 1.63 and 1.38 times higher than that of pure BFO. In addition, four cycles experiment also proved that BFO/ZFO has good stability and excellent magnetic recovery properties. A possible carrier transfer path on the base of the direct Z-scheme mechanism in composite was proposed. This study provides a useful guide toward the design of the highly efficient and magnetic collectable photocatalysts by the introduction of magnetic component and the construction of heterojunction, and as-synthesized BFO/ZFO was proved to be a promising photocatalyst for the elimination of toxic organic molecules in groundwater. (C)& nbsp;2022 Elsevier B.V. All rights reserved.

Key words

3D/3D composites/Direct Z-scheme heterojunction/Magnetic recovery/Photocatalytic degradation/Visible light/BIFEO3/NANOCOMPOSITE/EVOLUTION/CONSTRUCTION/PERFORMANCE/COMPOSITE/MECHANISM/INSIGHT/PATHWAY

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出版年

2022

Journal of Alloys and Compounds

EISCI

ISSN：0925-8388

被引量39

参考文献量54

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