Issue 29, 2011
From the journal:

Journal of Materials Chemistry

Compositional tunability and high temperature stability of ceria–zirconia hollow spheres†

Nicholas C. Strandwitz,a   Samuel Shanerb  and  Galen D. Stucky*ac  

* Corresponding authors

a Materials Department, University of California, Santa Barbara, California, USA
E-mail: stucky@chem.ucsb.edu

b Department of Chemical Engineering, University of California, Santa Barbara, California, USA

c Department of Chemistry and Biochemistry, University of California, Santa Barbara, California, USA

Abstract

Cerium oxide is a widely used catalyst support due to favorable oxygen storage and release properties. The present investigation was undertaken to improve the thermal stability of hollow ceria shells by incorporation of zirconium. Hollow ceria spheres were doped with zirconium in the range of 1–13 atomic percent by a solvothermal method. In situhigh-temperature XRD revealed that samples with greater than 5% zirconium were significantly more resistant to crystallite growth than pure ceria samples. Additionally, nitrogen adsorption porosimetry showed that doped samples retained their specific surface area to higher temperatures than undoped samples. Transmission electron microscopy was used to confirm high temperature stability (up to 1100 °C) of the hollow sphere morphology.

Graphical abstract: Compositional tunability and high temperature stability of ceria–zirconia hollow spheres

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Article information

DOI
https://doi.org/10.1039/C1JM10897B
Article type
Paper
Submitted
01 Mar 2011
Accepted
06 May 2011
First published
16 Jun 2011

J. Mater. Chem., 2011,21, 10672-10675

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Compositional tunability and high temperature stability of ceria–zirconia hollow spheres

N. C. Strandwitz, S. Shaner and G. D. Stucky, J. Mater. Chem., 2011, 21, 10672 DOI: 10.1039/C1JM10897B

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