Effects of dopant materials on the characteristics of the nano-sized Co3O4 powders prepared by spray pyrolysis

Seo Hee Ju, Yun Chan Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Pure and M-doped Co3O4 (M = Cr, Fe, Mg, Zr) powders with a nanometre size and a narrow size distribution were prepared by spray pyrolysis from a spray solution with citric acid and ethylene glycol. The precursor powders with a hollow and thin walled structure were turned to nano-sized Co3O4 powders after post-treatment. The mean size of the pure Co3O4 powders post-treated at a temperature of 600°C was 77 nm. On the other hand, the mean sizes of the doped Co3O4 powders with a doping concentration of 3 mol.% were changed from 24 to 63 nm. The Mg-doped Co3O4 powders had the minimum mean size. The mean sizes of the Mg-doped Co3O4 powders with doping concentrations of 1 and 5 mol.% were 60 and 61 nm. The mean sizes of the Mg-doped Co3O4 powders with a doping concentration of 3 mol.% post-treated at temperatures of 700 and 800°C were 63 to 102 nm.

Original languageEnglish
Pages (from-to)527-532
Number of pages6
JournalJournal of Ceramic Processing Research
Volume11
Issue number5
Publication statusPublished - 2010 Dec 6
Externally publishedYes

Keywords

  • Black matrix
  • Cobalt oxide
  • Display material
  • Gas phase reaction
  • Nano powders
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites

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