Sol-gel synthesis and characterization of SrFeCo0.5O3.25-δ powder

Wanqin Jin, Isaac Robin Abothu, Rong Wang, Tai Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

SrFeCo0.5O3.25-δ powder was synthesized by a sol-gel processing from metal alkoxides. The powder synthesized was characterized by X-ray diffraction, scanning electron microscopy (SEM), BET surface area measurements, particle size analysis, and thermogravimetric analysis (TGA). The synthesized oxide consisted of three phases: a main perovskite phase with an amount of a perovskite-related layered phase and a trace spinel phase. The powder calcined at 850°C in air for 4 h exhibited a uniform rod-shaped morphology with a particle size of about 300 nm and a surface area of 2.1 m2/g. The average agglomerate size was about 3 μm. TGA data showed that the powder was of larger oxygen nonstoichiometry at high temperature in air. Experimental results demonstrate that sol-gel processing is a very effective technique for synthesizing submicron SrFeCo0.5O3.25-δ powders.

Original languageEnglish (US)
Pages (from-to)5432-5435
Number of pages4
JournalIndustrial and Engineering Chemistry Research
Volume41
Issue number22
DOIs
StatePublished - Oct 30 2002

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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