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3D Ridge-Valley Structure of a Pt-Ceria Catalyst: HRTEM and EELS Spectrum Imaging

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Abstract

Nano-ridge and valley structures formed as a result of self-aligned individual ceria nano-crystals, and HRSTEM/EELS revealed the 3-dimensional morphology profiles of the ridge and valley structures of the ceria support. After preparation of a Pt/ceria catalyst, HRSTEM indicated the preferential alignment of Pt nanoparticles inside the nano-valleys of the ceria support. EELS analyses confirmed changes in the oxidation state of ceria in the vicinity of Pt nanoparticles that are present at different depth in the valleys.

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Authors and Affiliations

  1. Center for Applied Energy Research, University of Kentucky, 2540 Research Park Dr., Lexington, KY, 40511, USA

    Uschi M. Graham, Rajesh A. Khatri, Gary Jacobs & Burtron H. Davis

  2. Electron Microscopy Center, University of Kentucky, ASTeCC Bldg., Lexington, KY, 40506, USA

    Alan Dozier

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  1. Uschi M. Graham
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  2. Rajesh A. Khatri
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  3. Alan Dozier
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  4. Gary Jacobs
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  5. Burtron H. Davis
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Correspondence to Burtron H. Davis.

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Graham, U.M., Khatri, R.A., Dozier, A. et al. 3D Ridge-Valley Structure of a Pt-Ceria Catalyst: HRTEM and EELS Spectrum Imaging. Catal Lett 132, 335–341 (2009). https://doi.org/10.1007/s10562-009-0140-7

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  • DOI: https://doi.org/10.1007/s10562-009-0140-7

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