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On-Particle EDS Analysis of Bimetallic, Carbon-Supported Catalysts

Published online by Cambridge University Press:  10 February 2011

Deborah L. Boxall ,
Edward A. Kenik  and
Charles M. Lukehart
Deborah L. Boxall
Affiliation:
Department of Chemistry, Vanderbilt University, Nashville, TN 37235
Edward A. Kenik
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
Charles M. Lukehart
Affiliation:
Department of Chemistry, Vanderbilt University, Nashville, TN 37235
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Abstract

Thermolysis of single-source molecular precursors has been used to prepare carbon-supported Pt1Sn1, Pt1Ru1, and Pt3Mo1 alloy nanoparticles. On-particle, high spatial resolution energy dispersive spectroscopy (HR-EDS) has been used to determine the extent of compositional variability between particles in the nanocomposite. The loss of volatile Ru and Mo oxides during the course of the HR-EDS analysis results in average compositions greatly enriched in Pt. Mathematical correction for loss of these volatile species results in average metal:metal ratios comparable to those measured by bulk elemental analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 589 , 1999 , 265
Copyright
Copyright © Materials Research Society 2001

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