Preparation of Z-scheme heterostructure Ti-doped ZnFe2O4/Bi2WO6 film photoanode for photoelectrochemical water splitting

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL Journal of Alloys and Compounds Pub Date : 2025-03-10 DOI:10.1016/j.jallcom.2025.179657

Xingang Kong , Guoyu Ren , Hao Tian , Xinmiao Yang , Jianfeng Huang , Lixiong Yin , Hao Zhang

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Abstract

The Ti-doped ZnFe₂O₄/Bi₂WO₆ composite photoanode is successfully synthesized. The surface work function of ZnFe₂O₄ is modified by Ti⁴⁺ doping, leading to the formation of a Z-scheme Ti-ZnFe₂O₄/Bi₂WO₆ heterostructure. In the Z-scheme heterostructure, photogenerated carriers are not only able to be effectively separated, but the high oxidation capacity of Bi₂WO₆ and the high reduction capacity of Ti-doped ZnFe₂O₄ are retained. The direction of the spatial electric field on the Bi₂WO₆ surface aligns with the interface electric field, which enhances the photogenerated carrier separation of the photoanode. As a result, the Z-scheme Ti-ZnFe₂O₄/Bi₂WO₆ photoanode exhibits superior PEC water oxidation performance.

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Z-scheme异质结构ti掺杂ZnFe2O4/Bi2WO6薄膜光阳极的制备及光电化学水分解

成功地合成了ti掺杂ZnFe2O4/Bi2WO6复合光阳极。Ti +掺杂修饰了ZnFe2O4的表面功函数，形成了Z-scheme Ti-ZnFe2O4/Bi2WO6异质结构。在z方案异质结构中，光生载流子不仅能够有效分离，而且保留了Bi2WO6的高氧化能力和ti掺杂ZnFe2O4的高还原能力。Bi2WO6表面空间电场方向与界面电场方向一致，增强了光阳极的光生载流子分离。结果表明，Z-scheme Ti-ZnFe2O4/Bi2WO6光阳极具有优异的PEC水氧化性能。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.