Magnetic field-assisted control of phase composition and texture in photocatalytic hematite films

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dc.authorid0000-0002-8363-9613
dc.contributor.authorPyeon, Myeongwhun.
dc.contributor.authorRauch, Vanessa.
dc.contributor.authorStadler, Daniel.
dc.contributor.authorGürsoy, Mehmet.
dc.contributor.authorDeo, Meenal.
dc.contributor.authorGönüllü, Yakup.
dc.contributor.authorFischer, Thomas.
dc.contributor.authorHwang, Taejin
dc.contributor.authorMathur, Sanjay
dc.date.accessioned2020-03-26T20:15:08Z
dc.date.available2020-03-26T20:15:08Z
dc.date.issued2019
dc.departmentSelçuk Üniversitesi, Mühendislik Fakültesi, Kimya Mühendisliği Bölümüen_US
dc.description.abstractWe report the influence of external magnetic fields applied parallel or perpendicular to the substrate during plasma chemical vapor deposition (PECVD) of hematite (alpha-Fe2O3) nanostructures. Hematite films grown from iron precursors show pronounced changes in phase composition (pure hematite vs. coexistence of hematite and magnetite) and crystallographic textures depending upon whether PECVD is performed with or without the influence of external magnetic field. Static magnetic fields created by rod-type (RTMs) or disk-type magnets (DTMs) results in hematite films with anisotropic or equiaxed grains, respectively. Using RTMs, a superior photoelectrochemical (PEC) performance is obtained for hematite photoanodes synthesized under perpendicularly applied magnetic field (with respect to substrate), whereas parallel magnetic field results in the most efficient hematite photoanode in the case of DTM. The experimental data on microstructure and functional properties of hematite films show that application of magnetic fields has a significant effect on the crystallite size and texture with preferred growth and/or suppression of grains with specific texture in Fe2O3 films. Investigations on the water splitting properties of the hematite films in a photoelectrochemical reactor reveal that photocurrent values of hematite photoanodes are remarkably different for films deposited with (0.659 mA cm(-2)) or without (0.484 mA cm(-2)) external magnetic field.en_US
dc.identifier.citationPyeon, M., Rauch, V., Stadler, D., Gürsoy, M., Deo, M., Gönüllü, Y., Fischer, T., Hwang, T., Mathur, S. (2019). Magnetic Field‐Assisted Control of Phase Composition and Texture in Photocatalytic Hematite Films. Advanced Engineering Materials, 21(8), 1900195.
dc.identifier.doi10.1002/adem.201900195en_US
dc.identifier.issn1438-1656en_US
dc.identifier.issn1527-2648en_US
dc.identifier.issue8en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://dx.doi.org/10.1002/adem.201900195
dc.identifier.urihttps://hdl.handle.net/20.500.12395/37988
dc.identifier.volume21en_US
dc.identifier.wosWOS:000481868900025en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorGürsoy, Mehmet.
dc.language.isoenen_US
dc.publisherWILEY-V C H VERLAG GMBHen_US
dc.relation.ispartofADVANCED ENGINEERING MATERIALSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjecthematiteen_US
dc.subjectmagnetic field assisted PECVDen_US
dc.subjectmetal oxide semiconductoren_US
dc.subjectnanostructuresen_US
dc.subjectPEC water splittingen_US
dc.titleMagnetic field-assisted control of phase composition and texture in photocatalytic hematite filmsen_US
dc.typeArticleen_US

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