In real catalyst system, it si difficult to establish a correlation between catalytic properties and the shape (crystal planes, corners and steps) of the active catalytic particles. In this paper we present a clear shape dependence of the catalytic properties of a Vulcan-supported fuel cell catalyst having 4 nm cubo-octahedral platinum(0) nanocrystallites with (111) and (100) surfaces stabilized by sodium polyacrylate. The electrode materials were characterized by CO-stripping cyclic voltammetry and transmission electron microscopy (TEM), showing that no agglomeration had occured among the nanoparticles on the catalyst surfaces.

Dependence of CO oxidation on Pt nanoparticle shape: a shape-selective approach to the synthesis of PEMFC catalysts

URGEGHE, Christian;DE BATTISTI, Achille;
2008

Abstract

In real catalyst system, it si difficult to establish a correlation between catalytic properties and the shape (crystal planes, corners and steps) of the active catalytic particles. In this paper we present a clear shape dependence of the catalytic properties of a Vulcan-supported fuel cell catalyst having 4 nm cubo-octahedral platinum(0) nanocrystallites with (111) and (100) surfaces stabilized by sodium polyacrylate. The electrode materials were characterized by CO-stripping cyclic voltammetry and transmission electron microscopy (TEM), showing that no agglomeration had occured among the nanoparticles on the catalyst surfaces.
S., Kinge; Urgeghe, Christian; DE BATTISTI, Achille; H., Boennemann
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11392/523494
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