Fabrication and characterization of WO3/Fe2O3/GO ternary heterostructure for visible light-driven photocatalytic hydrogen production

IF 4.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2026-09-20 DOI:10.1007/s10853-026-13759-9

Yashika, Anupam Agarwal, Aanchal Sethi

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引用次数: 0

Abstract

A ternary heterostructure WO₃/Fe₂O₃/GO (WFG) nanocomposite for effective photocatalytic hydrogen production under irradiation of visible light is synthesized by hydrothermal process. The combination of GO with WO₃/Fe₂O₃ heterostructure improved visible light absorption and interfacial charge separation, leading to a lowered optical band gap of 1.96 eV along with enhanced charge-transfer properties. Under visible light exposure in a Na₂S/Na₂SO₃ sacrificial system, WFG demonstrated a hydrogen evolution of 25.26 mmol g⁻¹ over 10 h corresponding to HER of 2.526 mmol g⁻¹ h⁻¹. The increased activity was supported by PL, EIS, Mott–Schottky, and VB-XPS analysis which indicated reduced charge recombination and beneficial interfacial electronic interactions. The photocatalyst maintained its effectiveness across six consecutive cycles showing strong stability which is further supported by post-reaction XRD, FTIR, XPS, and TEM. An estimated apparent quantum efficiency of around 4.41% suggests effective use of visible light photons. These results indicate that WO₃/Fe₂O₃/GO (WFG) nanocomposite is a potential photocatalyst for visible light-induced hydrogen production.

Graphical abstract

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可见光催化制氢用WO3/Fe2O3/GO三元异质结构的制备与表征

采用水热法制备了可见光下有效光催化制氢的三元异质结构WO3/Fe2O3/GO （WFG）纳米复合材料。氧化石墨烯与WO3/Fe2O3异质结构的结合改善了可见光吸收和界面电荷分离，导致光学带隙降低到1.96 eV，并增强了电荷转移性能。在Na2S/Na2SO3牺牲体系中，WFG在10 h内的析氢速率为25.26 mmol g−1，对应于HER为2.526 mmol g−1 h−1。PL， EIS， Mott-Schottky和VB-XPS分析表明活性增加，表明电荷重组减少，界面电子相互作用有益。反应后的XRD、FTIR、XPS和TEM进一步证实了该光催化剂在连续六个循环中保持其有效性，表现出较强的稳定性。估计表观量子效率约为4.41%，表明有效地利用了可见光光子。这些结果表明，WO3/Fe2O3/GO （WFG）纳米复合材料是一种潜在的可见光诱导制氢光催化剂。图形抽象

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.