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Catalysis Letters

, Volume 137, Issue 1–2, pp 28–34 | Cite as

Template-Free Synthesis of Sphere, Rod and Prism Morphologies of CeO2 Oxidation Catalysts

  • Yejun Guan
  • Emiel J. M. Hensen
  • Yan Liu
  • Haidong Zhang
  • Zhaochi Feng
  • Can Li
Article

Abstract

Ceria materials with sphere, rod, and prism morphologies were synthesized via the hydrolysis of solutions containing Ce(NO3)3 and urea under hydrothermal conditions. By carefully adjusting the synthesis conditions (salt concentration, temperature and synthesis time), spheres with a diameter of about 200 nm, rods of about 6 nm in width and 60 nm in length and prisms with an edge length of about 600 nm were synthesized. XRD and TEM indicate that the grain size of these samples is in the range of 7–10 nm after calcination at 450 °C. These ceria materials exhibit a higher catalytic activity in the oxidation of CO than conventionally prepared CeO2.

Graphical Abstract

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Keywords

Ceria Hydrothermal synthesis Morphology Carbon monoxide oxidation 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.State Key Laboratory of CatalysisDalian Institute of Chemical Physics, Chinese Academy of SciencesDalianChina
  2. 2.Schuit Institute of CatalysisEindhoven University of TechnologyEindhovenThe Netherlands
  3. 3.Institute of Chemical and Engineering Sciences (ICES)SingaporeSingapore

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