Synthesis and catalytic properties of microemulsion-derived cerium oxide nanoparticles

Research output: Contribution to journalResearch articleContributedpeer-review


  • Emanuel Kockrick - , Dresden University of Technology (Author)
  • Christian Schrage - , Dresden University of Technology (Author)
  • Anett Grigas - , Dresden University of Technology (Author)
  • Dorin Geiger - , Dresden University of Technology (Author)
  • Stefan Kaskel - , Chair of Inorganic Chemistry I (Author)


The synthesis of cerium dioxide nanoparticles using an inverse microemulsion technique and precipitation method was investigated. Cerium hydroxide nanoparticles were synthesized by adding diluted ammonia to n-heptane-surfactant-cerium nitrate system. The micelle and particle size in the range of 5-12 nm were controlled by varying the molar water to surfactant ratio and analyzed by dynamic light scattering (DLS), small angle X-ray scattering (SAXS) and high-resolution transmission electron microscopy (HRTEM). Cerium hydroxide nanoparticles were isolated and subsequently treated at 100-600 °C to obtain nanoscale ceria. Crystallite sizes of cerium dioxide in the range of 6-16 nm were estimated by Scherrer analysis by X-ray diffraction (XRD) and HRTEM. The catalytic activity of particles annealed at 400 and 600 °C in soot combustion reactions was characterized by temperature-programmed oxidation (TPO) indicating a size-dependant activity. Crystallite sizes and catalytic stability of elevated ceria systems were tested in second combustion cycles.


Original languageEnglish
Pages (from-to)1614-1620
Number of pages7
JournalJournal of solid state chemistry
Issue number7
Publication statusPublished - Jul 2008



  • Catalysis, Ceria nanoparticles, Dynamic light scattering, Inverse microemulsion, Small angle X-ray scattering, Soot combustion