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Rare Metals
Erschienen in: Rare Metals 7/2020

05.09.2019

Enhanced visible-light photoelectrochemical performance via chemical vapor deposition of Fe2O3 on a WO3 film to form a heterojunction

verfasst von: Yi-Fei Zhang, Yu-Kun Zhu, Chun-Xiao Lv, Shou-Juan Lai, Wen-Jia Xu, Jin Sun, Yuan-Yuan Sun, Dong-Jiang Yang

Erschienen in: Rare Metals | Ausgabe 7/2020

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Abstract

A heterojunction photoanode of Fe2O3 loaded on a WO3 film on a fluorine-doped tin oxide substrate (FTO-WO3/Fe2O3) was prepared via a simple hydrothermal and chemical vapor deposition (CVD) growth method. The photoanode showed higher photoelectrochemical (PEC) water-splitting activity than that of the pristine FTO-WO3 under simulated sunlight because of the synergistic effect of Fe2O3 and WO3. The as-synthesized material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The photocurrent density was estimated by linear sweep voltammetry and further confirmed using intensity-modulated photocurrent spectra. Experiments demonstrated that the coated Fe2O3 enhanced the separation and migration efficiencies of the photoinduced electrons and holes, improving the PEC water-splitting properties. The FTO-WO3/Fe2O3 photoanode showed a 1.25 times enhancement in photocurrent density compared with FTO-WO3. This result suggests that facile chemical vapor deposition growth is an effective way to fabricate heterojunctions and improve the properties of WO3 photoanodes for PEC water-splitting applications.
Vorheriger Artikel Gold/oxide heterostructured nanoparticles for enhanced SERS sensitivity and reproducibility
Nächster Artikel Computational fluid dynamics simulation and experimental analysis of ultrafine powder suspension

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Metadaten
Titel
Enhanced visible-light photoelectrochemical performance via chemical vapor deposition of Fe2O3 on a WO3 film to form a heterojunction
verfasst von
Yi-Fei Zhang
Yu-Kun Zhu
Chun-Xiao Lv
Shou-Juan Lai
Wen-Jia Xu
Jin Sun
Yuan-Yuan Sun
Dong-Jiang Yang
Publikationsdatum
05.09.2019
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 7/2020
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-019-01311-5

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