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Preparation of CeO2novel sponge-like rods by emulsion liquid membrane system and its catalytic oxidation property

Authors
Journal
Materials Letters
0167-577X
Publisher
Elsevier
Publication Date
Volume
63
Issue
15
Identifiers
DOI: 10.1016/j.matlet.2009.02.056
Keywords
  • Liquid Emulsion Membrane
  • Microstructure
  • Ceo2Sponge-Like Rods
  • Crystal Structure
  • Catalysis Property

Abstract

Abstract CeO 2 sponge-like rods aggregated by small nanoparticles in the diameter range of 14–31 nm, with diameters of 170–810 nm and lengths of 5–10 μm, which were successfully fabricated through a route of liquid emulsion membrane followed by heat treatment. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) were employed to characterize the samples. The catalysts were tested for CO oxidation, and an enhanced catalytic activity has been found for CO oxidation by using CeO 2 sponge-like rods as compared with CeO 2 nanorods and nanoparticles, which showed that the morphology of CeO 2 crystalline plays an important role in determining their catalytic oxidation property.

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