Electrochemical characterization and reactivity of Pt nanoparticles supported on single-walled carbon nanotubes

Carbon nanotubes have been proposed as advanced metal catalyst support for electrocatalysis. In this paper, Pt nanoparticles supported on single-walled carbon nanotubes (SWCNTs)-Pt, were prepared using a solid-state reaction between the SWCNTs and two different Pt precursors, bis(dibenzylideneaceton...

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Bibliographic Details
Published in:Electrochimica acta 2007-05, Vol.52 (18), p.5582-5590
Main Authors: Solla-Gullón, J., Lafuente, E., Aldaz, A., Martínez, M.T., Feliu, J.M.
Format: Article
Language:English
Subjects:
Chemistry
Electrocatalysts
Electrochemical characterization
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Kinetics and mechanism of reactions
Other electrodes
Pt nanoparticles
SWCNTs
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Summary:Carbon nanotubes have been proposed as advanced metal catalyst support for electrocatalysis. In this paper, Pt nanoparticles supported on single-walled carbon nanotubes (SWCNTs)-Pt, were prepared using a solid-state reaction between the SWCNTs and two different Pt precursors, bis(dibenzylideneacetone)platinum [Pt(DBA) 2] or tri(dibenzylideneacetone)platinum [Pt(DBA) 3]. TEM images of the samples show Pt nanoparticles with a particle size around 2.5 nm with a high degree of dispersion on the SWCNTs. A detailed electrochemical characterization of the surface of the samples including irreversibly adsorbed adatoms of Bi and Ge as probe reactions has been carried out. It has been stated that SWCNTs-Pt samples subjected to the classical electrochemical activation induce a serious sintering of the Pt nanoparticles.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2006.11.051