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Highly enhanced photocatalytic activity of nanotubular Fe2O3/Fe2WO6 nanocomposite film formed by anodizing FeW alloy

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dc.abstract.enThis study demonstrates the highly enhanced photocatalytic activity of Fe2O3 nanotubes by making a heterojunction with Fe2WO6 and doping of W6+ ions into the α-Fe2O3 phase for water splitting and decomposition of an organic pollutant. Both nanotubular and compact Fe2O3/Fe2WO6 films are formed by anodizing the magnetron-sputtered Fe-9 at% W alloy in fluoride-containing ethylene glycol electrolyte and subsequent annealing at 450 °C. Their photocatalytic activities are compared with W-free nanoporous Fe2O3 film formed on high-purity Fe. The nanotubular Fe2O3/Fe2WO6 film exhibits a markedly enhanced photoelectrochemical oxygen evolution reaction and photocatalytic degradation of methylene blue compared with the nanoporous W-free Fe2O3 film. Because of the larger surface area, the nanotubular Fe2O3/Fe2WO6 film reveals further increased activity than the compact Fe2O3/Fe2WO6 film. The STEM study discloses the dispersion of Fe2WO6 nanoparticles in the α-Fe2O3 phase after annealing at 450 °C, and XRD analysis shows the possible doping of W species into α-Fe2O3. The formation of the W-doped α-Fe2O3/Fe2WO6 heterojunction likely promotes the separation of photogenerated electron-hole pairs, enhancing photocatalytic activity. Hence, the nanotubular Fe2O3/Fe2WO6 film is a possible candidate for visible-light-driven photocatalysts
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKowalski, Damian
dc.contributor.authorHabazaki, Hiroki
dc.contributor.authorAoki, Yoshitaka
dc.contributor.authorZhu, Chunyu
dc.contributor.authorKitano, Sho
dc.contributor.authorFadillah, Laras
dc.date.accessioned2024-01-25T03:11:35Z
dc.date.available2024-01-25T03:11:35Z
dc.date.copyright2023-03-02
dc.date.issued2023
dc.description.accesstimeAT_PUBLICATION
dc.description.financeNie dotyczy
dc.description.versionFINAL_PUBLISHED
dc.description.volume149
dc.identifier.doi10.1016/J.ELECOM.2023.107460
dc.identifier.issn1388-2481
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/108477
dc.identifier.weblinkhttps://api.elsevier.com/content/article/PII:S1388248123000346?httpAccept=text/xml
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofElectrochemistry Communications
dc.relation.pages107460
dc.rightsCC-BY-NC-ND
dc.sciencecloudnosend
dc.subject.enAnodic oxide
dc.subject.enFe2O3
dc.subject.enFe2WO6
dc.subject.enNanotube
dc.subject.enPhotocatalysis
dc.titleHighly enhanced photocatalytic activity of nanotubular Fe2O3/Fe2WO6 nanocomposite film formed by anodizing FeW alloy
dc.typeJournalArticle
dspace.entity.typePublication