Journal of Sol-Gel Science and Technology

, Volume 26, Issue 1, pp 547–551

Preparation of ZnO Nanoparticles: Structural Study of the Molecular Precursor


  • M.S. Tokumoto
  • V. Briois
  • C.V. Santilli
  • S.H. Pulcinelli

DOI: 10.1023/A:1020711702332

Cite this article as:
Tokumoto, M., Briois, V., Santilli, C. et al. Journal of Sol-Gel Science and Technology (2003) 26: 547. doi:10.1023/A:1020711702332


The structure of zinc acetate derived precursor currently used in the sol-gel synthesis of ZnO nanoparticles is described. The reaction products obtained before and after reflux of ethanolic zinc acetate solution have been studied by UV-Vis, photoluminescence, FTIR and EXAFS at the Zn K edge. EXAFS results evidence for both precursor solutions a change from the octahedral coordination sphere of oxygen atoms characteristic of the solid zinc acetate dihydrate compound into a four-fold environment. The EXAFS spectra of precursor solutions can be satisfactorily reproduced using the molecular structure reported for Zn4O(Ac)6 (Ac = COOCH3). UV-Vis and FTIR measurements are also in agreement with the formation of this oligomeric precursor. The structural modification is more pronounced after reflux at 80°C, because the increase of the Zn4O(Ac)6 amount and the formation of nearly 3.0 nm sized ZnO nanoparticle.

sol-gel precursorZnO nanoparticlesEXAFS

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© Kluwer Academic Publishers 2003