Journal of Sol-Gel Science and Technology

, Volume 26, Issue 1–3, pp 547–551

Preparation of ZnO Nanoparticles: Structural Study of the Molecular Precursor

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

Abstract

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 precursor ZnO nanoparticles EXAFS 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M.L. Cohen, Annu. Rev. Mater. Sci. 30, 1 (2000).Google Scholar
  2. 2.
    L.E. Brus, J. Phys. Chem. 90, 2555 (1986).Google Scholar
  3. 3.
    T.K. Gupta, J. Am. Ceram. Soc. 73, 1817 (1990).Google Scholar
  4. 4.
    M.S. Tokumoto, A. Smith, C.V. Santilli, S.H. Pulcinelli, E. Elkaim, and V. Briois, J. Non-Cryst. Solids 273, 302 (2000).Google Scholar
  5. 5.
    E.A. Meulenkamp, J. Phys. Chem. B 102, 5566 (1998).Google Scholar
  6. 6.
    L. Spanhel and M.A. Anderson, J. Am. Chem. Soc. 113, 2826 (1991).Google Scholar
  7. 7.
    S. Sakohara, M. Ishida, and M.A. Anderson, J. Phys. Chem. B 102, 10169 (1998).Google Scholar
  8. 8.
    M.S. Tokumoto, S.H. Pulcinelli, C.V. Santilli, and A.F. Craievich, J. Non-Cryst. Solids 247, 176 (1999).Google Scholar
  9. 9.
    C.J. Brinker and G.W. Scherer, Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing (Academic Press, San Diego, 1990), ch. 1.Google Scholar
  10. 10.
    J. Mustre de Leon, J.J. Rehr, S.I. Zabinsky, and R.C. Albers, Phys Rev B 44, 4146 (1991).Google Scholar
  11. 11.
    N. Newville, B. Ravel, D. Haskel, J.J. Rehr, E.A. Stern, and Y. Yacoby, Physica B 208/209, 154 (1995).Google Scholar
  12. 12.
    W. Clegg, I.R. Little, and B.P. Straughan, Acta Cryst. C 42, 1701 (1986).Google Scholar
  13. 13.
    L. Hiltunen, M. Leskelä, M. Mäkelä, and L. Niinistö, Acta Chem. Scand. A 41, 548 (1987).Google Scholar
  14. 14.
    H. Kunkely and A. Vogler, J. Chem. Soc. Chem. Commun. 17, 1204 (1990).Google Scholar
  15. 15.
    S.C. Abrahams and J.L. Bernstein, Acta Cryst. B 25, 1233 (1969).Google Scholar

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

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

There are no affiliations available

Personalised recommendations