Modified polyol-mediated synthesis and consolidation of Gd-doped ceria nanoparticles

Shizhong Wang, Shushu Chen, Alexandra Navrotsky, Manfred Martin, Sangtae Kim, Zuhair A. Munir

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A modification of the polyol-mediated synthesis method was developed to synthesize nanostructured gadolinia-doped ceria, Ce0.9Gd0.1O2 - x. The oxide prepared by this method had uniform grains with a size of about 2 nm. The work demonstrated the critical role of water in the synthesis. A yield of up to 81% can be achieved. The as-synthesized Ce0.9Gd0.1O2 - x nanoparticles are crystalline with a cubic fluorite type structure. The nanopowders were subsequently consolidated by a modified pulse electric current sintering (PECS) method to produce dense samples with an average size below 16 nm and a relative density of about 96%. The dense material is composed of isolated particles instead of agglomerates and provides an ideal sample for investigation of the size effect on the conductivity.

Original languageEnglish (US)
Pages (from-to)372-378
Number of pages7
JournalSolid State Ionics
Volume181
Issue number8-10
DOIs
StatePublished - Mar 29 2010
Externally publishedYes

Keywords

  • Ceria
  • Consolidation
  • Nanopowder
  • Spark plasma sintering
  • Synthesis

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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