Preparation of nanocrystalline CuAlO2 through sol-gel route

C. K. Ghosh, S. R. Popuri, T. U. Mahesh, K. K. Chattopadhyay

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Abstract

Nanocrystalline powders of CuAlO2 were synthesized through sol-gel method using nitrate-citrate route and also through solid state reaction method. We used a new set of precursor materials for the synthesis of CuAlO2 through sol-gel route which were not reported in the past. A little lowering of the synthesis temperature (1,000 A degrees C) was observed in case of sol-gel process compared to the solid state reaction method (1,100 A degrees C) and also at shorter time duration. The particle size of the synthesized powders was determined through small angle X-ray scattering. It has been observed that the particle size prepared by nitrate-citrate technique is less than the particle size prepared by the solid-state reaction method. Chemical states of the atomic species were determined by X-ray photoelectron spectroscopy. The formation of phase pure CuAlO2 were also confirmed by Fourier transformed infrared spectroscopy. A number of solvents were also used for finding the best possible combinations for obtaining phase pure CuAlO2 at 1,000 A degrees C and it was observed that only the combination of nitrate salts, citric acid and ethanol resulted phase pure CuAlO2.

Original languageEnglish
Pages (from-to)75-81
Number of pages7
JournalJournal of Sol-Gel Science and Technology
Volume52
Issue number1
DOIs
Publication statusPublished - Oct 2009

Keywords

  • CuAlO2
  • Sol-gel method
  • SAXS
  • Optical property
  • FTIR
  • CHEMICAL SOLUTION DEPOSITION
  • THIN-FILMS
  • CONDUCTING CUALO2
  • THERMOELECTRIC PROPERTIES
  • CITRIC-ACID
  • OXIDE-FILMS
  • FABRICATION
  • SCATTERING
  • COPPER
  • SNO2

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