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

被引：16

作者：

Holderer, O

Epicier, T ^{[1
]}

Esnouf, C

Fuchs, G

机构：

[1] Inst Natl Sci Appl, GEMPPM, CNRS, UMR 5510, F-69621 Villeurbanne, France

[2] ATOFINA Ctr Rech Rhone Alpes, F-69493 Pierre Benite, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 08期

关键词：

Nanocolloids;

D O I：

10.1021/jp026016o

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：1723 / 1726

页数：4

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