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

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

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

800 Zitate (Scopus)

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.

OriginalspracheEnglisch
Seiten (von - bis)98-106
Seitenumfang9
FachzeitschriftJournal of Catalysis
Jahrgang154
Ausgabenummer1
DOIs
PublikationsstatusVeröffentlicht - Juni 1995
Extern publiziertJa

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