Synthesis of Cobalt Oxide Nanoparticles/Fibres in Alcoholic Medium using y-ray Technique

  • Anjali A. Athawale University of Pune, Pune
  • Megha Majumdar University of Pune, Pune
  • Hema Singh University of Pune, Pune
  • K. Navinkiran University of Pune, Pune
Keywords: x-ray Diffraction, x-ray photoelectron spectroscopy, XPS and optical properties, g irradiation, technique, magnetic nanoparticles, UV-visible spectroscopy, spectroscopy, cobalt-oxide nanoparticles, nanoparticle synthesis


Nanoparticles of cobalt oxides were synthesised by steady state g irradiation technique using various alcoholic salt solutions of cobalt ions with aniline acting as a stabiliser. Preliminary results were investigated using UV-vis and Fourier transform infra red analysis. The X-ray diffractograms revealed major peaks at 2q values of ~ 36.4°, 39.1°, 44.2°, and 65.7° corresponding to the Co3O4 phase and one peak at ~30.7° (100 per cent intensity) for Co2O3 phase. Lower alcohols yielded particles while fibres were formed in higher alcohols as observed from transmission electron microscopic analysis. Iso-propanol was observed to yield cobalt oxide nanoparticles with highest stability, conversion yield and homogeneity in size. The average measured diameter and length of these fibres were ~29 nm and 130 nm respectively. Energy dispersive spectroscopy supports the formation of cobalt oxide. The X-ray photoelectron spectroscopic results for iso-propanol sample show a peak at 781.6 eV confirming the formation of Co3O4.

Defence Science Journal, 2010, 60(5), pp.507-513, DOI:

Author Biographies

Anjali A. Athawale, University of Pune, Pune
She is Assoc Prof in the Department of Chemistry, University of Pune, Pune. She has been actively involved in research working on conducting polymers, metal nanoparticles, oxide-polymer nanocomposites and their applications as sensors as well as catalysts. She has published over 65 papers in international journals and has contributed a chapter in Encyclopedia of Sensors.
Megha Majumdar, University of Pune, Pune
She has obtained her PhD in Chemistry from the University of Pune in 2008. She is currently pursuing her postdoctoral research at Tata Institute of Fundamental Research, Mumbai in Materials Chemistry. Rer primary research interests are: Nanomaterials, metal and metal oxides, their synthesis, characterisation, and applications in catalysis.
Hema Singh, University of Pune, Pune
She has obtained her MSc in Applied Chemistry. Rer areas of research are: Synthesis of oxide nanoparticles by various techniques and their use as materials for sensor applications.
K. Navinkiran, University of Pune, Pune
He has done MSc in Materials science. Presently, he is pursuing PhD in the field of synthesis of nano sized oxides. Ris areas of interest include: Synthesis and characterisation of conducting polymers and oxides for catalysis applications.
How to Cite
Athawale, A., Majumdar, M., Singh, H., & Navinkiran, K. (2010). Synthesis of Cobalt Oxide Nanoparticles/Fibres in Alcoholic Medium using y-ray Technique. Defence Science Journal, 60(5), 507-513.
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