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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.
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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

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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[7] Chao, L. C., Patil, A. N. and Andres, R. P. (unpublished results).Google Scholar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