The photoelectrochemical properties of FTO/WO3/BiVO4/TiO2 photoanode for water splitting

IF 2 3区 化学 Q4 CHEMISTRY, PHYSICAL Chemical Physics Pub Date : 2024-09-12 DOI:10.1016/j.chemphys.2024.112457
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Abstract

This work investigates the photoelectrochemical performance of an FTO (Fluorine-doped Tin Oxide) /WO3 (tungsten trioxide) /BiVO4 (bismuth vanadate) /TiO2 (titanium dioxide) photoanode for water splitting. By forming a heterojunction between WO3 and BiVO4, charge separation and transportation are significantly enhanced, resulting in an improved photocurrent density. Surface modification with a thin TiO2 layer further improves the stability of the photoanode without compromising its photocurrent. The SEM, XRD, and XPS analyses confirm the successful formation of the photoanode structure. The photoelectrochemical J-V curves demonstrate that the WO3/BiVO4 composite electrode outperforms single WO3 and BiVO4 electrodes, and the TiO2 coating further enhances its performance. These findings provide valuable insights into optimizing BiVO4-based photoanodes for efficient hydrogen production via water splitting.

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用于水分离的 FTO/WO3/BiVO4/TiO2 光阳极的光电化学特性
这项研究探讨了用于水分离的 FTO(掺氟氧化锡)/WO3(三氧化钨)/BiVO4(钒酸铋)/TiO2(二氧化钛)光阳极的光电化学性能。通过在 WO3 和 BiVO4 之间形成异质结,电荷分离和传输显著增强,从而提高了光电流密度。通过在表面修饰一层薄薄的 TiO2 层,进一步提高了光阳极的稳定性,而不会影响其光电流。SEM、XRD 和 XPS 分析证实了光阳极结构的成功形成。光电化学 J-V 曲线表明,WO3/BiVO4 复合电极的性能优于单一的 WO3 和 BiVO4 电极,而 TiO2 涂层则进一步提高了其性能。这些发现为优化基于 BiVO4 的光阳极以通过水分裂高效制氢提供了宝贵的见解。
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来源期刊
Chemical Physics
Chemical Physics 化学-物理:原子、分子和化学物理
CiteScore
4.60
自引率
4.30%
发文量
278
审稿时长
39 days
期刊介绍: Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.
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