Abstract
Zr-doped ceria nanotubes (ZrxCe1-xO2) were obtained in a high yield from a hydrothermal reaction in an aqueous solution of NaOH with Ce(NO3)3 ·6H2O and ZrO 2 powder in a small proportion. The morphology and crystalline structure were characterized with X-ray diffraction, a scanning electron microscope, and a transmission electron microscope. Mechanisms for the growth of Zr-doped ceria nanotubes are proposed based on the Kirkendall effect; the formation of the tubular structure is strongly dependent on the precursor. This is the first report of a direct synthesis of cerium-oxide nanotubes in high yield. The surface area of the nanotubes is 76 m2/g and their average pore size is ̃52.2 nm. Catalytic measurements show that the nanotubes as synthesized are active for an oxygen-storage capacity and for ethanol reforming.
Original language | English (US) |
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Pages (from-to) | 5031-5034 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry C |
Volume | 113 |
Issue number | 13 |
DOIs | |
State | Published - Apr 2 2009 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Energy
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films