Citation
T. Shibata et al., XAFS studies of gold and silver-gold nanoparticles in aqueous solutions, J SYNCHROTR, 8, 2001, pp. 545-547
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF SYNCHROTRON RADIATION
ISSN journal
09090495
→ ACNP
Volume
8
Year of publication
2001
Part
2
Pages
545 - 547
Database
ISI
SICI code
0909-0495(200103)8:<545:XSOGAS>2.0.ZU;2-0
Abstract
The x-ray absorption fine structure (XAFS) of colloidal Au and Au/Ag nanopa
rticles (3.5nm and 20nm mean diameter) in an aqueous solution has been inve
stigated. Size dependent alloying was observed upon deposition of Ag on Au
core. Ag forms distinct layers around the 20 nm Au nanoparticles. In contra
st, random mixing is found for Ag deposited on 3.5nm Au particles.