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Preparation, Structure and Properties of Novel Bimetallic Au/Pd Colloids

Published online by Cambridge University Press:  15 February 2011

Christopher J. Baddeley ,
David A. Jefferson ,
Richard M. Lambert ,
R. Mark Ormerod ,
Trevor Rayment ,
Günter Schmid  and
Andrew P. Walker
Christopher J. Baddeley
Affiliation:
Department of Chemistry, University of Cambridge, Cambridge CB2 lEW, UK
David A. Jefferson
Affiliation:
Department of Chemistry, University of Cambridge, Cambridge CB2 lEW, UK
Richard M. Lambert
Affiliation:
Department of Chemistry, University of Cambridge, Cambridge CB2 lEW, UK
R. Mark Ormerod
Affiliation:
Department of Chemistry, University of Cambridge, Cambridge CB2 lEW, UK
Trevor Rayment
Affiliation:
Department of Chemistry, University of Cambridge, Cambridge CB2 lEW, UK
Günter Schmid
Affiliation:
Institut für Anorganische Chemie, Universität-GH Essen, 4300 Essen 1, Germany
Andrew P. Walker
Affiliation:
Department of Chemistry, University of Cambridge, Cambridge CB2 lEW, UK
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Abstract

Ligand-stabilized bimetallic Au/Pd colloids may be prepared from 180–200Å Au colloids which can be covered by Pd shells of varying thickness. They can be isolated as solid materials without agglomeration. HREM observations indicate a narrow particle size distribution and reveal a well-defined Au(core)/Pd(shell) structure. This is convincingly confirmed by EXAFS data. Thermal treatment leads to Au/Pd alloy formation at ≥ 500 K, as evidenced by the appearance of characteristic Au-Pd distances in the EXAFS.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 272: Symposium O – Chemical Processes in Inorganic Materials: Metal and Semiconductor Clusters , 1992 , 85
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

1. Miner, R.S. Jr.,, Namba, S., Turkevich, J., Studies in Surface Science and Catalysis (Elsevier, 1981) Vol.7, p. 60.Google Scholar
2. Tysoe, W.T., Nyberg, G.L. and Lambert, R.M., Surface Science 135 (1983) 128.Google Scholar
3. Ormerod, R.M. and Lambert, R.M., JCS Chem. Comm. 20 (1990) 1421.Google Scholar
4. Ormerod, R.M. and Lambert, R.M., Catalysis Letters 6 (1990) 121.CrossRefGoogle Scholar
5. Baddeley, C.J., Ormerod, R.M. and Lambert, R.M., Surface Science 259 (1991) L709.Google Scholar
6. Curtis, A.C., Duff, D.G., Edwards, P.P., Jefferson, D.A., Johnson, B.F.G. and Logan, D.E., JCS Chem. Comm. 1264 (1987).Google Scholar
7. Schmid, G., Lehnert, A., Halm, J.O. and Bovin, J-O., Angewandte Chemie International Edition 30 (1991) 874.Google Scholar