Low temperature chemical precipitation and characterization of ceria based ceramic composite oxide materials

Authors

  • Devi Radhika Department of Chemistry, Karunya University
  • A. Samson Nesaraj Department of Chemistry, Karunya University

Keywords:

Ceria based ceramic composite oxides, Chemical precipitation, Characterization

Abstract

Ceria based ceramic composite oxide materials such as Ce0.9Gd0.1O2-δ -Ce0.9Y0.1O2-δ and Ce0.8Gd0.2O2-δCe0.8Y0.2O2-δ were prepared by a simple chemical precipitation method for application in low temperature solid oxide fuel cells (LTSOFCs) as electrolytes. The precursor materials used in this synthesis were cerium nitrate hexahydrate, gadolinium nitrate and yttrium nitrate (as basic materials), sodium hydroxide (as precipitator material) and PVA (as surfactant). A mixture of metal hydroxides was formed when the aqueous mixture of basic materials mixed with the aqueous precipitant solution in proper stoichiometric composition. The resultant hydroxide mixture was washed with ethanol and water mixture (1:9 volume ratio) to remove any unwanted impurities present along with the precipitate. The purified precipitate was dried at 50-100°C and heat treated at 300°C, 450°C, 600°C and 750°C for 2 h each to get phase pure ceramic composite oxide materials. The resultant ceramic composite oxide materials were characterized by XRD, FT-IR, particle size analysis and SEM techniques. From the results, it was found that the chemical precipitation can be used effectively to prepare phase pure ceria based ceramic composite oxide materials.

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Published

2013-06-30

How to Cite

[1]
D. . Radhika and A. Samson Nesaraj, “Low temperature chemical precipitation and characterization of ceria based ceramic composite oxide materials”, J Met Mater Miner, vol. 23, no. 1, Jun. 2013.

Issue

Vol. 23 No. 1 (2013)

Section

Original Research Articles

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