Article Dans Une Revue Journal of Physical Chemistry B Année : 2003

Direct structural and chemical analysis of indivudual core-shell (Pd-Sn) nanocolloids

Résumé

Palladium−tin nanocolloids have been analyzed with high-resolution transmission electron microscopy (HRTEM) and electron energy-loss spectroscopy (EELS). The composition of individual colloids with a diameter of 2−5 nm has been deduced. It has been established that the colloids consist of a core of a PdxSn1-x alloy, with x ranging from 0.6 to 1. From the numerical comparison of experimental EELS line scans with reconstructed ones from a model colloid, it has been possible to evidence a slight Sn surface enrichment equivalent to a submonolayer of pure Sn on the surface of the colloid.

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Dates et versions

hal-00475123 , version 1 (21-04-2010)

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Olaf Holderer, Thierry Epicier, Claude Esnouf, Gilbert Fuchs. Direct structural and chemical analysis of indivudual core-shell (Pd-Sn) nanocolloids. Journal of Physical Chemistry B, 2003, 107 (8), pp.1723-1726. ⟨10.1021/jp026016o⟩. ⟨hal-00475123⟩
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