Real-time direct transmission electron microscopy imaging of phase and morphology transformation from solid indium oxide hydroxide to hollow corundum-type indium oxide nanocrystallites

dc.contributor.authorSchlicker, Lukas
dc.contributor.authorPopescu, Radian
dc.contributor.authorBekheet, Maged F.
dc.contributor.authorDoran, Andrew
dc.contributor.authorGerthsen, Dagmar
dc.contributor.authorGurlo, Aleksander
dc.date.accessioned2019-07-09T14:39:54Z
dc.date.available2019-07-09T14:39:54Z
dc.date.issued2019-05-31
dc.description.abstractA time-resolved series of high-resolution transmission electron microscopy (HRTEM) images are used to monitor phase and morphology transformation of rod-like and spherical particles with the initial orthorhombic InOOH phase in situ under continuous illumination with high-energy electrons in a transmission electron microscope. For both particle types, the electron-beam irradiation induces a fast InOOH to rh-In2O3 decomposition accompanied by the formation of voids within the particle/rod center. After illumination time intervals of about 1–2 min (i.e. electron dose 6.3–12.6 × 10^7 e nm^−2) for particles and 8 min (4.3 × 10^8 e nm^−2) for rods, respectively, several small empty cavities become visible in the particle/rod center. The cavities coalesce and form a large hollow space/canal after further illumination. Time-resolved in situ HRTEM unambiguously shows that the formation of internal voids in both nanoparticle types is a consequence of the structural InOOH-to-rh-In2O3 phase transition that starts at the surface of the corresponding particle. The as-formed oxide phase encapsulates the untransformed hydroxylated phase. Its decomposition does not follow the Kirkendall mechanism; the matter transferred outwards is removed in the form of water, leading to void formation inside without an increase of the particle size.en
dc.description.sponsorshipTU Berlin, Open-Access-Mittel - 2019en
dc.identifier.eissn2040-3372
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/9603
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-8649
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/en
dc.subject.ddc600 Technik, Technologiede
dc.subject.otherhigh-resolution transmission electron microscopyen
dc.subject.otherin situen
dc.subject.otherindium oxide hydroxideen
dc.subject.otherHRTEMen
dc.subject.othernanoparticleen
dc.titleReal-time direct transmission electron microscopy imaging of phase and morphology transformation from solid indium oxide hydroxide to hollow corundum-type indium oxide nanocrystallitesen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/C9NR02115Aen
dcterms.bibliographicCitation.journaltitleNanoscaleen
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistryen
dcterms.bibliographicCitation.originalpublisherplaceCambridgeen
dcterms.bibliographicCitation.pageend12249en
dcterms.bibliographicCitation.pagestart12242en
dcterms.bibliographicCitation.volume11en
tub.accessrights.dnbfreeen
tub.affiliationFak. 3 Prozesswissenschaften>Inst. Werkstoffwissenschaften und -technologien>FG Keramische Werkstoffede
tub.affiliation.facultyFak. 3 Prozesswissenschaftende
tub.affiliation.groupFG Keramische Werkstoffede
tub.affiliation.instituteInst. Werkstoffwissenschaften und -technologiende
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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