Physicochemical and photoelectrochemical characterization of nanostructured oxide layers grown by anodic oxidation of Fe40Al in etidronic acid-based electrolyte

2025
journal article
article
dc.abstract.enAlthough it has already been reported that anodic oxidation of various FeAl alloys can be successfully employed for the fabrication of nanostructured semiconducting oxide films, the photoelectrochemical activity of this kind of materials has not been studied so far. Therefore, this work reports, for the very first time, a detailed characterization of the physicochemical and photoelectrochemical properties of nanostructured anodic layers obtained by one-step anodization of Fe40Al in an etidronic acid-based electrolyte, followed by thermal treatment and chemical etching. The morphology of the obtained materials has been verified by SEM, while their composition and properties have been carefully evaluated by various techniques including EDS, XRD, XPS, UV–Vis, and Raman spectroscopy. The photoelectrochemical activity of the materials was assessed using a 1.5 G solar light simulator and carefully discussed in relation to the synthesis procedure, morphology, and composition of the semiconducting layers. As-anodized layers with well-developed nanoporous morphology were composed mostly of amorphous aluminum and iron oxides. The latter was converted to hematite by thermal treatment in air at 400 °C without any morphological changes. Subsequent chemical etching in NaOH resulted in preferential dissolution of aluminum oxide, which was accompanied by loss of porous morphology. Both, annealed and etched layers exhibit pronounced photoelectrochemical activity, and the values of generated photocurrents as well as charge recombination behavior were found to be strongly dependent on the synthesis procedure.
dc.affiliationWydział Chemii : Zakład Chemii Fizycznej i Elektrochemii
dc.affiliationWydział Chemii : Zakład Chemii Nieorganicznej
dc.affiliationWydział Chemii : Zakład Krystalochemii i Krystalofizyki
dc.contributor.authorZaraska, Leszek - 214236
dc.contributor.authorGurgul, Magdalena - 253652
dc.contributor.authorTynkevych, Olena - 227587
dc.contributor.authorPisarek, Marcin
dc.contributor.authorKozieł, Marcin - 133981
dc.contributor.authorCzerwiński, Mateusz
dc.contributor.authorŁazińska, Magdalena
dc.contributor.authorMichalska-Domańska, Marta
dc.date.accessioned2025-05-16T12:59:32Z
dc.date.available2025-05-16T12:59:32Z
dc.date.createdat2025-05-15T16:30:16Zen
dc.date.issued2025
dc.description.volume528
dc.identifier.articleid146261
dc.identifier.doi10.1016/j.electacta.2025.146261
dc.identifier.issn0013-4686
dc.identifier.urihttps://ruj.uj.edu.pl/handle/item/552506
dc.languageeng
dc.language.containereng
dc.rightsDodaję tylko opis bibliograficzny
dc.rights.licenceBez licencji otwartego dostępu
dc.subject.enFeAl alloy
dc.subject.enanodization
dc.subject.enanodic iron oxide
dc.subject.enphotoelectrochemistry
dc.subtypeArticle
dc.titlePhysicochemical and photoelectrochemical characterization of nanostructured oxide layers grown by anodic oxidation of Fe40Al in etidronic acid-based electrolyte
dc.title.journalElectrochimica Acta
dc.typeJournalArticle
dspace.entity.typePublicationen
dc.abstract.en
Although it has already been reported that anodic oxidation of various FeAl alloys can be successfully employed for the fabrication of nanostructured semiconducting oxide films, the photoelectrochemical activity of this kind of materials has not been studied so far. Therefore, this work reports, for the very first time, a detailed characterization of the physicochemical and photoelectrochemical properties of nanostructured anodic layers obtained by one-step anodization of Fe40Al in an etidronic acid-based electrolyte, followed by thermal treatment and chemical etching. The morphology of the obtained materials has been verified by SEM, while their composition and properties have been carefully evaluated by various techniques including EDS, XRD, XPS, UV–Vis, and Raman spectroscopy. The photoelectrochemical activity of the materials was assessed using a 1.5 G solar light simulator and carefully discussed in relation to the synthesis procedure, morphology, and composition of the semiconducting layers. As-anodized layers with well-developed nanoporous morphology were composed mostly of amorphous aluminum and iron oxides. The latter was converted to hematite by thermal treatment in air at 400 °C without any morphological changes. Subsequent chemical etching in NaOH resulted in preferential dissolution of aluminum oxide, which was accompanied by loss of porous morphology. Both, annealed and etched layers exhibit pronounced photoelectrochemical activity, and the values of generated photocurrents as well as charge recombination behavior were found to be strongly dependent on the synthesis procedure.
dc.affiliation
Wydział Chemii : Zakład Chemii Fizycznej i Elektrochemii
dc.affiliation
Wydział Chemii : Zakład Chemii Nieorganicznej
dc.affiliation
Wydział Chemii : Zakład Krystalochemii i Krystalofizyki
dc.contributor.author
Zaraska, Leszek - 214236
dc.contributor.author
Gurgul, Magdalena - 253652
dc.contributor.author
Tynkevych, Olena - 227587
dc.contributor.author
Pisarek, Marcin
dc.contributor.author
Kozieł, Marcin - 133981
dc.contributor.author
Czerwiński, Mateusz
dc.contributor.author
Łazińska, Magdalena
dc.contributor.author
Michalska-Domańska, Marta
dc.date.accessioned
2025-05-16T12:59:32Z
dc.date.available
2025-05-16T12:59:32Z
dc.date.createdaten
2025-05-15T16:30:16Z
dc.date.issued
2025
dc.description.volume
528
dc.identifier.articleid
146261
dc.identifier.doi
10.1016/j.electacta.2025.146261
dc.identifier.issn
0013-4686
dc.identifier.uri
https://ruj.uj.edu.pl/handle/item/552506
dc.language
eng
dc.language.container
eng
dc.rights
Dodaję tylko opis bibliograficzny
dc.rights.licence
Bez licencji otwartego dostępu
dc.subject.en
FeAl alloy
dc.subject.en
anodization
dc.subject.en
anodic iron oxide
dc.subject.en
photoelectrochemistry
dc.subtype
Article
dc.title
Physicochemical and photoelectrochemical characterization of nanostructured oxide layers grown by anodic oxidation of Fe40Al in etidronic acid-based electrolyte
dc.title.journal
Electrochimica Acta
dc.type
JournalArticle
dspace.entity.typeen
Publication

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