Structure and chemical composition of a supported Pt-Ru Electrocatalyst for methanol oxidation

V. Radmilović, H. A. Gasteiger, P. N. Ross

Research output: Contribution to journalArticlepeer-review

794 Scopus citations

Abstract

High resolution electron microscopy and X-ray microchemical analysis were used to characterize the composition, size, distribution, and morphology of Pt-Ru particles with nominal Pt:Ru ratios of 1:1 and 3:1, supported on carbon black. The particles are predominantly single nanocrystals with diameters in the order of 2.0 to 2.5 nm. Occasionally, twinned particles are also observed. All investigated particles represent solid solutions of Pt and Ru with compositions very close to the nominal one. Based on two-dimensional projection in high resolution images, it is suggested that the well-resolved particles are of cubooctahedral shape. In addition to (200) and (111) facets, (113) facets are also observed.

Original languageEnglish
Pages (from-to)98-106
Number of pages9
JournalJournal of Catalysis
Volume154
Issue number1
DOIs
StatePublished - Jun 1995
Externally publishedYes

Fingerprint

Dive into the research topics of 'Structure and chemical composition of a supported Pt-Ru Electrocatalyst for methanol oxidation'. Together they form a unique fingerprint.

Cite this