A study of the effect of structural transformations in the course of Ce-2(C2O4)(3)center dot 10H(2)O thermal decomposition on the morphology of CeO2 obtained

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Abstract

Cerium oxalate decahydrate was subjected to a thermal decomposition to obtain nanocrystalline ceria. It was shown that conditions during dehydration strongly influence morphology of the final product. If one performs dehydration of the precursor under a vacuum or in air, CeO2 can be obtained in pseudomorph, i.e. the precursor's crystal shape is retained. An increase of water vapor pressure leads to the formation of different intermediates and fragmentation of the precursor's crystals. Investigation by various physical methods (TEM, XRD, and BET) provided the information that the final product consisted of CeO2 particles 5-6 nm in size.

Original languageEnglish
Pages (from-to)11495-11499
Number of pages5
JournalMaterials Today: Proceedings
Volume4
Issue number11
DOIs
Publication statusPublished - 2017
EventRussia-Japan Conference on Advanced Materials - Synthesis, Processing and Properties of Nanostructures (RJCAM) - Novosibirsk
Duration: 31 Oct 20163 Nov 2016

Keywords

  • ceria
  • cerium oxalate decahydrate
  • nanoparticles
  • precursor
  • pseudomorph
  • thermal decomposition

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