Bulletin of Materials Science

, Volume 33, Issue 1, pp 21–26 | Cite as

Zn/ZnO core/shell nanoparticles synthesized by laser ablation in aqueous environment: Optical and structural characterizations

Article

Abstract

Zn/ZnO core/shell nanoparticles are synthesized by pulsed laser ablation (PLA) of Zn metal plate in the aqueous environment of sodium dodacyl sulfate (SDS). Solution of nanoparticles is found stable in the colloidal form for a long time, and is characterized by UV-visible absorption, transmission electron microscopy (TEM), photoluminescence (PL) and Raman spectroscopic techniques. UV-visible absorption spectrum has four peaks at 231, 275, 356, and 520 nm, which provides primary information about the synthesis of core-shell and elongated nanoparticles. TEM micrographs reveal that synthesized nanoparticles are monodispersed with three different average sizes and size distributions. Colloidal solution of nanoparticles has significant absorption in the green region, therefore, it absorbs 514·7 nm light of Ar+ laser and emits in the blue region centred at 350 and 375 nm, violet at 457 nm and green at 550 nm regions. Raman shift is observed at 300 cm−1 with PL spectrum, which corresponds to 3E2N and E3L mode of vibrations of ZnO shell layer. Synthesis mechanism of Zn/ZnO core/shell nanoparticles is discussed.

Keywords

Pulsed laser ablation in aqueous media II-VI semiconductor core-shell nanoparticles green photoluminescence Raman scattering 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Agashe C, Kluth O, Hupkes J, Zastrow U, Rech B and Wuttig M 2004 J. Appl. Phys. 95 1911CrossRefADSGoogle Scholar
  2. Arnold M, Avouris Ph, Pan Z W and Wang Z L 2002 J. Phys. Chem. B107 659Google Scholar
  3. Chen Y, Bangall D M, Koh H, Park K, Hiraga K, Zhu Z and Yao T 1998 J. Appl. Phys. 84 3912CrossRefADSGoogle Scholar
  4. Chen X, Lou Y and Burda C 2004 Int. J. Nanotech. 1 105Google Scholar
  5. Cotton T M, Neddersen J and Chumanov G 1993 Appl. Spectrosc. 47 1959CrossRefADSGoogle Scholar
  6. Cotton T M, Sibbald M S and Chumanov G 1996 J. Phys. Chem. 100 4672CrossRefGoogle Scholar
  7. Dev A, Kar S, Chakrabarti S and Chaudhuri S 2006 Nanotechnol. 17 1533CrossRefADSGoogle Scholar
  8. Fojtik A and Henglein A 1993 Ber. Bunsen-Ges. Phys. Chem. 97 252Google Scholar
  9. Gorla C R, Emanetoglu N W, Liang S, Mayo W E, Lu Y, Wraback M and Shen H 1999 J. Appl. Phys. 85 2595CrossRefADSGoogle Scholar
  10. Guo R, Nishimura J, Matsumoto M, Higashihata M, Nakamura D and Okada T 2008 Jap. J. Appl. Phys. 47 741CrossRefADSGoogle Scholar
  11. Haase M, Weller H and Henglein A 1998 J. Phys. Chem. 92 482CrossRefGoogle Scholar
  12. Hodak J H, Henglein A, Giersig M and Hartland G V 2000 J. Phys. Chem. B104 11708Google Scholar
  13. Huang M H, Mao S, Feick H, Yan H, Yiying W, Kind H, Weber E, Russo R and Yang P 2001 Science 292 1897CrossRefPubMedADSGoogle Scholar
  14. Johnson J C, Yan H, Schaller R D, Haber L H, Saykally R J and Yang P 2001 J. Phys. Chem. B105 113875Google Scholar
  15. Johnson J C, Yan H, Schaller R D, Petersen P B, Yang P and Saykally R J 2002 Nano Lett. 2 279CrossRefADSGoogle Scholar
  16. Kong X Y and Wang Z L 2003 Nano Lett. 3 1625CrossRefADSGoogle Scholar
  17. Kong X Y, Ding Y and Wang Z L 2004 J. Phys. Chem. B108 570Google Scholar
  18. Lao J Y, Wen J G and Ren Z F 2002 Nano Lett. 2 1287CrossRefADSGoogle Scholar
  19. Link S, Burda C, Nikoobakht B and El-Sayed M A 2000 J. Phys. Chem. B104 6152Google Scholar
  20. Pan Z W, Dai Z R and Wang Z L 2001 Science 291 1947CrossRefPubMedADSGoogle Scholar
  21. Singh S C and Gopal R 2007 Bull. Mater. Sci. 30 291CrossRefGoogle Scholar
  22. Singh S C and Gopal R 2008a Phys. E40 724Google Scholar
  23. Singh S C and Gopal R 2008b Phys. Chem. C112 2812Google Scholar
  24. Xiang B, Wang P, Zhang X, Dayeh S A, Aplin D P R, Soci C, Yu D and Wang D 2007 Nano Lett. 7 323CrossRefPubMedADSGoogle Scholar
  25. Xiong H, Xu Y, Ren Q and Xia Y 2008 J. Am. Chem. Soc. 130 3522Google Scholar
  26. Wang Z, Zhang H, Zhang L, Yuan J, Yan S and Wang C 2003 Nanotechnol. 11 14Google Scholar
  27. Yang G W 2007 Prog. Mater. Sci. 52 648CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2010

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of AllahabadAllahabadIndia

Personalised recommendations