Microstructural properties and local atomic structures of cobalt oxide nanoparticles synthesised by mechanical ball-milling process

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dc.authoridKurban, Mustafa/0000-0002-7263-0234
dc.authoridAKSOY AKGUL, FUNDA/0000-0002-9256-4887
dc.contributor.authorAkgul, Funda Aksoy
dc.contributor.authorAkgul, Guvenc
dc.contributor.authorKurban, Mustafa
dc.date.accessioned2024-11-07T13:32:29Z
dc.date.available2024-11-07T13:32:29Z
dc.date.issued2016
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, facile preparation of pure and nano-sized cobalt oxides particles was achieved using low-cost mechanical ball-milling synthesis route. Microstructural and morphological properties of synthesised products were characterised by X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. XRD results indicated that the fabricated samples composed of cubic pure phase CoO and Co3O4 nanocrystalline particles with an average crystallite size of 37.2 and 31.8nm, respectively. TEM images showed that the resulting samples consisted of agglomerates of particles with average diameter of about 37.6nm for CoO and 31.9nm for Co3O4. Phase purity of the prepared samples was further investigated due to their promising technological applications. Local atomic structure properties of the prepared nanoparticles were probed using synchrotron radiation-based X-ray absorption spectroscopy (XAS) including X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). EXAFS data analysis further confirmed the formation of single-phase CoO and Co3O4 nanoparticles. In addition, structural properties of cobalt oxide nanoparticles were investigated by performing density functional theory calculations at B3LYP/TZVP level and Born-Oppenheimer molecular dynamics. Theoretical calculations for both prepared samples were found to be consistent with the experimental results derived from EXAFS analysis. Obtained results herein reveals that highly crystalline and pure phase CoO and Co3O4 nanoparticles can be synthesised using simple, inexpensive and eco-friendly ball-milling method for renewable energy applications involving fuel cells and water splitting devices.
dc.identifier.doi10.1080/14786435.2016.1232493
dc.identifier.endpage3226
dc.identifier.issn1478-6435
dc.identifier.issn1478-6443
dc.identifier.issue30
dc.identifier.scopus2-s2.0-84987887524
dc.identifier.scopusqualityQ3
dc.identifier.startpage3211
dc.identifier.urihttps://doi.org/10.1080/14786435.2016.1232493
dc.identifier.urihttps://hdl.handle.net/11480/15445
dc.identifier.volume96
dc.identifier.wosWOS:000385367500007
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofPhilosophical Magazine
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectNanostructures
dc.subjectball-milling
dc.subjectstructure analysis
dc.subjectEXAFS
dc.subjectdensity-functional theory
dc.titleMicrostructural properties and local atomic structures of cobalt oxide nanoparticles synthesised by mechanical ball-milling process
dc.typeArticle

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