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Nanocubes or Nanorhombohedra? Unusual Crystal Shapes of Corundum-Type Indium Oxide

Gurlo, Aleksander ; Lauterbach, Stefan ; Miehe, Gerhard ; Kleebe, Hans-Joachim ; Riedel, Ralf (2008)
Nanocubes or Nanorhombohedra? Unusual Crystal Shapes of Corundum-Type Indium Oxide.
In: Journal of Physical Chemistry C, 112 (25)
doi: 10.1021/jp800823g
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Sol−gel processing via the modified nonalkoxide route resulted in the formation of nanocrystals of the corundum-type In2O3 polymorph, which revealed characteristic rhombohedra with a morphology very close to cubes. Because the cubic bixbyite-type In2O3 polymorph is more abundant under ambient conditions, the seemingly cube-shaped morphology might confuse the experimentalist. As shown by transmission electron microscopy, this morphology does not reflect any relation to a cubic structure but appears accidentally with form {012} at a specific axis ratio of corundum-type structures. The pseudocubic particles have also been reported for α-Fe2O3, also in this case the pseudocubic nanorhombohedra are terminated by {012} facets.

Typ des Eintrags: Artikel
Erschienen: 2008
Autor(en): Gurlo, Aleksander ; Lauterbach, Stefan ; Miehe, Gerhard ; Kleebe, Hans-Joachim ; Riedel, Ralf
Art des Eintrags: Bibliographie
Titel: Nanocubes or Nanorhombohedra? Unusual Crystal Shapes of Corundum-Type Indium Oxide
Sprache: Englisch
Publikationsjahr: 26 Juni 2008
Verlag: ACS
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Physical Chemistry C
Jahrgang/Volume einer Zeitschrift: 112
(Heft-)Nummer: 25
DOI: 10.1021/jp800823g
Kurzbeschreibung (Abstract):

Sol−gel processing via the modified nonalkoxide route resulted in the formation of nanocrystals of the corundum-type In2O3 polymorph, which revealed characteristic rhombohedra with a morphology very close to cubes. Because the cubic bixbyite-type In2O3 polymorph is more abundant under ambient conditions, the seemingly cube-shaped morphology might confuse the experimentalist. As shown by transmission electron microscopy, this morphology does not reflect any relation to a cubic structure but appears accidentally with form {012} at a specific axis ratio of corundum-type structures. The pseudocubic particles have also been reported for α-Fe2O3, also in this case the pseudocubic nanorhombohedra are terminated by {012} facets.

Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
Hinterlegungsdatum: 16 Apr 2012 09:17
Letzte Änderung: 13 Aug 2021 08:33
PPN:
Sponsoren: The work was financially supported by the Fonds der Chemischen Industrie, Frankfurt, Germany.
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