Ziemba, Marc ; Ganduglia-Pirovano, M. Verónica ; Hess, Christian (2024)
Elucidating the Oxygen Storage-Release Dynamics in Ceria Nanorods by Combined Multi-Wavelength Raman Spectroscopy and DFT.
In: The Journal of Physical Chemistry Letters, 2020, 11 (20)
doi: 10.26083/tuprints-00028249
Artikel, Zweitveröffentlichung, Postprint
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
The oxygen storage-release dynamics in ceria nanorods is elucidated by using a combination of in situ multi-wavelength Raman spectroscopy and density functional theory calculations. Ceria nanorods exposing CeO₂(100) and CeO₂(110) facets are shown to be characterized by highly facet-dependent properties regarding molecular oxygen activation and decomposition as well as lattice oxygen dynamics. Temperature-dependent Raman results show that oxygen is stored in the form of peroxide species on the (100) facets, which are then released as gaseous oxygen, whereas lattice oxygen is involved with the (110) facets. On the latter, peroxide species first decompose into oxygen atoms that heal vacant lattice oxygen sites before being released as gaseous oxygen. The exposure of different facets makes ceria nanorods an interesting material for catalytic applications, because they allow the use of a mixture of oxygen storage-release functions, as well as their synergistic interactions, in a single system.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Ziemba, Marc ; Ganduglia-Pirovano, M. Verónica ; Hess, Christian |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Elucidating the Oxygen Storage-Release Dynamics in Ceria Nanorods by Combined Multi-Wavelength Raman Spectroscopy and DFT |
| Sprache: | Englisch |
| Publikationsjahr: | 29 Oktober 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 24 September 2020 |
| Ort der Erstveröffentlichung: | Washington, DC |
| Verlag: | American Chemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The Journal of Physical Chemistry Letters |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 20 |
| Kollation: | 15 Seiten |
| DOI: | 10.26083/tuprints-00028249 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/28249 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | The oxygen storage-release dynamics in ceria nanorods is elucidated by using a combination of in situ multi-wavelength Raman spectroscopy and density functional theory calculations. Ceria nanorods exposing CeO₂(100) and CeO₂(110) facets are shown to be characterized by highly facet-dependent properties regarding molecular oxygen activation and decomposition as well as lattice oxygen dynamics. Temperature-dependent Raman results show that oxygen is stored in the form of peroxide species on the (100) facets, which are then released as gaseous oxygen, whereas lattice oxygen is involved with the (110) facets. On the latter, peroxide species first decompose into oxygen atoms that heal vacant lattice oxygen sites before being released as gaseous oxygen. The exposure of different facets makes ceria nanorods an interesting material for catalytic applications, because they allow the use of a mixture of oxygen storage-release functions, as well as their synergistic interactions, in a single system. |
| Freie Schlagworte: | Adsorption, Defects in solids, Lattices, Oxides, Oxygen |
| Status: | Postprint |
| URN: | urn:nbn:de:tuda-tuprints-282495 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 29 Okt 2024 13:48 |
| Letzte Änderung: | 30 Okt 2024 09:03 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Elucidating the Oxygen Storage-Release Dynamics in Ceria Nanorods by Combined Multi-Wavelength Raman Spectroscopy and DFT. (deposited 29 Okt 2024 13:48) [Gegenwärtig angezeigt]
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