Fabrication and characterization of heterostructure WO3/BiVO4/TiO2 photocatalyst for efficient performance of photoelectrochemical water splitting

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-02-11 DOI:10.1016/j.cap.2025.02.004

Aye Myint Myat Kyaw , Gasidit Panomsuwan , Ratiporn Munprom , Oi Lun Li

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引用次数: 0

Abstract

Hydrogen evolution through photoelectrochemical (PEC) water splitting using semiconductor photocatalysts and solar energy is a highly promising method for sustainable energy production. Among the various photocatalyst combinations, the heterostructure of tungsten trioxide (WO₃) and bismuth vanadate (BiVO₄) has garnered attention for PEC applications due to its wide availability, cost-effectiveness, and suitable bandgap energy. The formation of a heterojunction between WO₃ and BiVO₄ improves charge separation and transfer, enhancing the overall photocatalytic performance. However, their performance is hindered by poor stability in aqueous solutions. To address this, a titanium dioxide (TiO₂) top layer was added to enhance the photoanode's stability by preventing direct contact with the electrolyte. A triple-layered WO₃/BiVO₄/TiO₂ heterostructure was fabricated via hydrothermal and spin-coating methods on an FTO substrate. The crystal structure, morphology, optical properties, and PEC performance of the photoanodes were systematically analyzed at each fabrication step. The WO₃/BiVO₄/TiO₂ heterostructure demonstrated excellent photo-switching performance, and stability tests confirmed that the TiO₂ layer effectively protected the underlying layers from photo corrosion, improving long-term efficiency.

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.