Indris, Sylvio ; Scheuermann, Marco ; Becker, Sebastian M. ; Šepelák, Vladimir ; Kruk, Robert ; Suffner, Jens ; Gyger, Fabian ; Feldmann, Claus ; Ulrich, Anne S. ; Hahn, Horst (2011)
Local Structural Disorder and Relaxation in SnO2Nanostructures Studied by119Sn MAS NMR and119Sn Mössbauer Spectroscopy.
In: The Journal of Physical Chemistry C, 115 (14)
doi: 10.1021/jp200651m
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We studied the local structural disorder and relaxation in different nanostructures of SnO2 by using 119Sn MAS NMR in combination with 119Sn Mössbauer spectroscopy. We investigated nanocrystalline powders with an average crystallite size of 8 nm as well as hollow spheres with a wall thickness of 3 nm and a diameter of 14 nm, and compared the results to coarse-grained materials. Whereas the uniform SnO6 octahedra in the coarse-grained material show a well-known distortion and thus large electric field gradients, the nanocrystalline SnO2 exhibits a structural relaxation leading to a distribution of local environments and more symmetric octahedra. The SnO2 hollow spheres show strong local disorder in combination with highly asymmetric environments around the Sn atoms.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Indris, Sylvio ; Scheuermann, Marco ; Becker, Sebastian M. ; Šepelák, Vladimir ; Kruk, Robert ; Suffner, Jens ; Gyger, Fabian ; Feldmann, Claus ; Ulrich, Anne S. ; Hahn, Horst |
| Art des Eintrags: | Bibliographie |
| Titel: | Local Structural Disorder and Relaxation in SnO2Nanostructures Studied by119Sn MAS NMR and119Sn Mössbauer Spectroscopy |
| Sprache: | Englisch |
| Publikationsjahr: | 14 April 2011 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The Journal of Physical Chemistry C |
| Jahrgang/Volume einer Zeitschrift: | 115 |
| (Heft-)Nummer: | 14 |
| DOI: | 10.1021/jp200651m |
| Kurzbeschreibung (Abstract): | We studied the local structural disorder and relaxation in different nanostructures of SnO2 by using 119Sn MAS NMR in combination with 119Sn Mössbauer spectroscopy. We investigated nanocrystalline powders with an average crystallite size of 8 nm as well as hollow spheres with a wall thickness of 3 nm and a diameter of 14 nm, and compared the results to coarse-grained materials. Whereas the uniform SnO6 octahedra in the coarse-grained material show a well-known distortion and thus large electric field gradients, the nanocrystalline SnO2 exhibits a structural relaxation leading to a distribution of local environments and more symmetric octahedra. The SnO2 hollow spheres show strong local disorder in combination with highly asymmetric environments around the Sn atoms. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien |
| Hinterlegungsdatum: | 31 Jan 2014 10:24 |
| Letzte Änderung: | 30 Jan 2019 10:37 |
| PPN: | |
| Sponsoren: | We are grateful to the German Ministry for Education and Research as well as to the DFG Center for Functional Nanostructures (CFN) at the Karlsruhe Institute of Technology (KIT) for financial support., J.S. and H.H. are grateful for financial support by the State of Hesse. |
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