{"title":"Preparation of Z-scheme Heterostructure Ti-doped ZnFe2O4/Bi2WO6 Film Photoanode for Photoelectrochemical Water Splitting","authors":"Xingang Kong, Guoyu Ren, Hao Tian, Xinmiao Yang, Jianfeng Huang, Lixiong Yin, Hao Zhang","doi":"10.1016/j.jallcom.2025.179657","DOIUrl":null,"url":null,"abstract":"The Ti-doped ZnFe<sub>2</sub>O<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub> composite photoanode is successfully synthesized. The surface work function of ZnFe<sub>2</sub>O<sub>4</sub> is modified by Ti⁴⁺ doping, leading to the formation of a Z-scheme Ti-ZnFe<sub>2</sub>O<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub> heterostructure. In the Z-scheme heterostructure, photogenerated carriers are not only able to be effectively separated, but the high oxidation capacity of Bi<sub>2</sub>WO<sub>6</sub> and the high reduction capacity of Ti-doped ZnFe<sub>2</sub>O<sub>4</sub> are retained. The direction of the spatial electric field on the Bi<sub>2</sub>WO<sub>6</sub> surface aligns with the interface electric field, which enhances the photogenerated carrier separation of the photoanode. As a result, the Z-scheme Ti-ZnFe<sub>2</sub>O<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub> photoanode exhibits superior PEC water oxidation performance.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":""},"PeriodicalIF":5.8000,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jallcom.2025.179657","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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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.
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.
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