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Structure of Nanophase Gold Particles on Iron Oxide Supports

Published online by Cambridge University Press:  21 February 2011

B. G. Demczyk ,
Chien Sze  and
Erdogan Gulari
B. G. Demczyk
Affiliation:
Electron Microbeam Analysis Laboratory, The University of Michigan, Ann Arbor, MI 48109
Chien Sze
Affiliation:
Department of Chemical Engineering, The University of Michigan, Ann Arbor, MI 48109
Erdogan Gulari
Affiliation:
Department of Chemical Engineering, The University of Michigan, Ann Arbor, MI 48109
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Abstract

Ultra-fine gold particles supported on iron oxide have been synthesized by coprecipitation and subsequently heat treated in air at temperatures ranging from 200°C to 700°C. Structure analyses have revealed variations in the degree of crystallinity of the iron oxide support as well as gold particle size and size distribution with heat treatment temperature. In addition, lattice parameters of gold particles were observed to deviate up to ten percent from the bulk value. We discuss these observations in light of a total minimization of the energy of the system (support plus particles).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 355: Symposium B1 – Evolution of Thin-Film and Surface Structure and Morphology , 1994 , 141
Copyright
Copyright © Materials Research Society 1995

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