Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-28T18:17:39.732Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstructure of ZnO shell on Zn nanoparticles

Published online by Cambridge University Press:  01 October 2004

Haiping Sun  and
Xiaoqing Pan
Haiping Sun
Affiliation:
Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136
Xiaoqing Pan*
Affiliation:
Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

When exposed to air at room temperature, Zn nanoparticles oxidize gradually to form crystalline ZnO shells with a thickness of a few nanometers. Electron diffraction and high-resolution lattice imaging revealed that the ZnO layer on the Zn {0001} surface is composed of many epitaxial domains with small rotation angles relative to the lattice of the Zn core. The oxidized Zn particle bends when irradiated by the electron beam in a transmission electron microscope. This is due to the increase of internal stress in the ZnO layer as a result of the realignment of adjacent domains under electron beam irradiation. Corrosion of Zn nanoparticles was observed and the scaling and spalling start to occur on the {1010} prismatic faces.

Keywords

Transmission electron microscopy (TEM)NanoparticleElectron irradiation
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 10 , October 2004 , pp. 3062 - 3067
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Huang, M.H., Mao, S., Feick, H.N., Yan, H., Kind, H., Wu, Y.Y., Weber, E. and Yang, P.D.: Room-temperature ultraviolet nanowire nanolasers. Science 292, 1897 (2001).CrossRefGoogle ScholarPubMed
2Pan, Z.W., Dai, Z.R. and Wang, Z.L.: Nanobelts of semiconducting oxides. Science 291, 1947 (2001).CrossRefGoogle ScholarPubMed
3Dai, Y., Zhang, Y., Li, Q.K. and Nan, C.W.: Synthesis and optical properties of tetrapod-like zinc oxide nanorods. Chem. Phys. Lett. 358, 83 (2002).CrossRefGoogle Scholar
4Hu, J.Q., Li, Q., Meng, X.M., Lee, C.S. and Lee, S.T.: Thermal reduction route to the fabrication of coaxial Zn/ZnO nanocables and ZnO nanotubes. Chem. Mater. 15, 305 (2003).CrossRefGoogle Scholar
5Lao, J.Y., Huang, J.Y., Wang, D.Z. and Ren, Z.F.: ZnO nanobridges and nanonails. Nano Lett. 3, 235 (2003).CrossRefGoogle Scholar
6Kong, X.Y., Ding, Y., Yang, R. and Wang, Z.L.: Single-crystal nanorings formed by epitaxial self-coiling of polar nanobelts. Science 303, 1348 (2004).CrossRefGoogle ScholarPubMed
7Hauffe, K.: Oxidation of Metals, based on the German edition of Oxydation von Metallen und Metallegierungen (Plenum Press, New York, 1965), pp. 15, 79, 93, 202Google Scholar
8Birks, N. and Meier, G.H.: Introduction to High Temperature Oxidation of Metals (Edward Arnold, London, U.K., 1983), pp. 55, 41, 34, 71, 47Google Scholar
9Wu, R., Xie, C., Hu, J., Xia, H. and Wang, A.: Function of oxide film during the thermal oxidation process of Zn nanoparticles. Scripta Mater . 43, 841 (2000).CrossRefGoogle Scholar
10Wu, R., Wu, J., Xie, C., Zhang, J. and Wang, A.: Morphological characteristic of Zn/ZnO nanopowders and the optical properties. Mater. Sci. Eng. A 328, 196 (2002).CrossRefGoogle Scholar
11Ogata, S. and Campbell, T.J.: Parallel molecular dynamics simulations for the oxidations of an aluminium nanocluster. J. Phys. Condens. Matter 10, 11449 (1998).CrossRefGoogle Scholar
12Sun, H.P., Li, D.M., Yu, S., Zou, G.T. and Zhang, Z.: Zn nanocrystals discovered from pencil-core. J. Mater. Sci. Lett. 19, 875 (2000).CrossRefGoogle Scholar
13Yang, J.C., Evan, D. and Tropia, L.: From nucleation to coalescence of Cu2O islands during in situ oxidation of Cu(001). Appl. Phys. Lett. 81, 241 (2002).CrossRefGoogle Scholar
14Williams, D.B. and Carter, C.B.: Transmission Electron Microscopy (Plenum Press, New York, 1996), p. 372.CrossRefGoogle Scholar