This work has been supported by the Deutsche Forschungsgemeinschaft (SFB 546, “Transition Metal Oxide Aggregates”). We recognize Dr. Helmut Kuhlenbeck for technical assistance at BESSY II. H.A. and D.S. gratefully acknowledge fellowship support by the Alexander von Humboldt Foundation.
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Communication
Resolving the Atomic Structure of Vanadia Monolayer Catalysts: Monomers, Trimers, and Oligomers on Ceria†
Article first published online: 19 SEP 2009
DOI: 10.1002/anie.200903085
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Baron, M., Abbott, H., Bondarchuk, O., Stacchiola, D., Uhl, A., Shaikhutdinov, S., Freund, H.-J., Popa, C., Ganduglia-Pirovano, M. and Sauer, J. (2009), Resolving the Atomic Structure of Vanadia Monolayer Catalysts: Monomers, Trimers, and Oligomers on Ceria. Angew. Chem. Int. Ed., 48: 8006–8009. doi: 10.1002/anie.200903085
- †
Publication History
- Issue published online: 7 OCT 2009
- Article first published online: 19 SEP 2009
- Manuscript Revised: 12 AUG 2009
- Manuscript Received: 8 JUN 2009
Funded by
- Deutsche Forschungsgemeinschaft
Keywords:
- density functional calculations;
- nanoparticles;
- structure elucidation;
- surface chemistry;
- thin films
On top of old ceria: Vanadyl-terminated monomers, trimers (see picture), and oligomers form on a CeO2(111) surface, and their atomic structure is resolved using a combination of high-level experimental and theoretical results. Ceria surfaces stabilize vanadia species in a +5 oxidation state, which wet and chemically reduce the ceria surface and probably play a crucial role in the reactivity of ceria-supported vanadia in oxidation reactions.