Hostname: page-component-76fb5796d-5g6vh Total loading time: 0 Render date: 2024-04-29T17:27:55.117Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis and Characterization of Structured Metal/Silica Clusters

Published online by Cambridge University Press:  21 February 2011

A.N. Patil ,
N. Otsuka  and
R.P. Andres
A.N. Patil
Affiliation:
School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47906, U.S.A.
N. Otsuka
Affiliation:
School of Materials Science and Engineering, Purdue University, West Lafayette, Indiana 47906, U.S.A.
R.P. Andres
Affiliation:
School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47906, U.S.A.
Get access

Abstract

The synthesis of two component clusters of Au/SiO2, Ag/SiO2 and Cu2O/SiO2 is described. These heteronuclear clusters are synthesized as metal/silicon clusters of controlled composition and controlled size using a novel gas aggregation source and by means of gas phase annealing are transformed into ‘structured’ particles. The final metal/oxide and oxide/oxide clusters are formed by air exposure. The structure of these nanostructured particles is determined by electron diffraction and transmission electron microscopy (TEM). The clusters exhibit two distinct structural forms: (1) clusters consisting of a metal rich core surrounded by a silicon rich skin and (2) clusters having a metal rich domain and a silicon rich domain separated by a sharp interface.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 332: Symposium U – Determining Nanoscale Physical Properties of Materials by Microscopy and Spectroscopy , 1994 , 195
Copyright
Copyright © Materials Research Society 1994

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

[1] Andres, R. P., Averback, R. S., Brown, W. L., Brus, L. E., Goddard, W. A., Kaldor, A. E., Louie, S. G., Mascovits, M., Peercy, P. S., Riely, S. J., Siegel, R. W., Spaepen, F. and Wang, Y., J. Mat. Res., 4, 704 (1989).Google Scholar
[2] Siegel, R. W., MRS Bulletin, 25, 60 (1990).Google Scholar
[3] Gleiter, H., Nanostructured Materials, 1, 1 (1992).Google Scholar
[4] Patil, A. N., Paithankar, D., Otsuka, N. and Andres, R. P., Z. Phys. D, 26, 137 (1993).Google Scholar
[5] Hartman, A. and Weil, K.G., High Temperature Science, 27, 31 (1990).Google Scholar
[6] Toshima, N., J. Macromol. Sci., A27 (9-11), 1225 (1990).Google Scholar
[7] Chao, L. C., Patil, A. N. and Andres, R. P. (unpublished results).Google Scholar
[8] Barner, J. B. and Ruggiero, S. T., Physical Review Letters, 59, 807 (1987).Google Scholar
[9] Reed, M. A., Scientific American, 269, 118 (1993).Google Scholar
[10] Choi, E. and Andres, R. P. in Physics and Chemistry of Small Clusters, edited by Jena, P., Rao, B. K. and Khanna, S. N. (Plenum Press, New York, 1987) p. 61.Google Scholar
[11] Park, S. B., PhD Thesis, Purdue University (1988).Google Scholar
[12] Patil, A. N. and Andres, R. P. (unpublished results).Google Scholar
[13] Crane, R., Patil, A. N. and Andres, R. P. (unpublished results).Google Scholar
[14] Rollert, F., Stolwijk, N. A. and Mehrer, H., J. Phys. D, 20, 1148 (1987).CrossRefGoogle Scholar
[15] Frank, W., Gosele, U., Mehrer, H. and Seeger, A. in Diffusion in Crystalline Solids edited by Murch, G. F. and Nowick, A.S. (Academic Press, New York, 1984) p. 63.CrossRefGoogle Scholar