Construction of BiVO_(4)/BiOCl@C Z-scheme heterojunction for enhanced photoelectrochemical performance

作     者：Jiaxin Li Hao Yuan Wenjie Zhang Ruijie Zhu Zhengbo Jiao Jiaxin Li;Hao Yuan;Wenjie Zhang;Ruijie Zhu;Zhengbo Jiao

作者机构：Institute of Materials for Energy and EnvironmentCollege of Material Science and EngineeringQingdao UniversityQingdao 266071China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2022年第29卷第11期

页      面：1971-1980页

核心收录：

学科分类：0819[工学-矿业工程] 08[工学] 0806[工学-冶金工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 

基　　金：financially supported by the Natural Science Foundation of Shandong Province of China (No. ZR2019MB006) the China Postdoctoral Science Foundation (Nos. 2018M632610 and 2017M610409) 

主　　题：photoelectrochemical bismuth vanadate BiOCl Z-scheme carbon 

摘      要：A Z-scheme heterostructure of Mo,W co-doped BiVO_(4)(Mo,W:BVO/BiOCl@C)was fabricated by a simple solid solution drying and calcination(SSDC)method.The heterostructure was characterized by X-ray diffraction(XRD),Fourier transform infrared(FTIR),X-ray photoelectron spectroscopy(XPS),etc.Under visible light irradiation,Mo,W:BVO/BiOCl@C heterostructure exhibits excellent photoelectrochemical capability compared with other as-prepared samples.The photocurrent density and the incident photon-to-electron conversion efficiency(IPCE)are about 5.4 and 9.0 times higher than those of pure BiVO_(4),respectively.The enhancement of the photoelectrochemical performance can be attributed to the construct of Z-scheme system,which is deduced from the radical trapping experiments.The Mo,W:BVO/BiOCl@C Z-scheme heterojunction enhances the visible-light absorption and reduces the recombination rate of charge carriers.This work provides an effective strategy to construct Z-scheme photoelectrodes for the application of photoelectrochemical water splitting.