DIRECT OBSERVATION OF CHEMICAL-REACTIONS IN SILICA-COATED GOLD AND SILVER NANOPARTICLES

Authors
GIERSIG M UNG T LIZMARZAN LM MULVANEY P
Citation
M. Giersig et al., DIRECT OBSERVATION OF CHEMICAL-REACTIONS IN SILICA-COATED GOLD AND SILVER NANOPARTICLES, Advanced materials, 9(7), 1997, pp. 570
Citations number
24
Categorie Soggetti
Material Science
Journal title
Advanced materials → ACNP
ISSN journal
09359648
Volume
9
Issue
7
Year of publication
1997
Database
ISI
SICI code
0935-9648(1997)9:7<570:DOOCIS>2.0.ZU;2-O
Abstract
Communication: The direct observation of chemical reactions of single particles in real time has been achieved using silver nanoparticles co vered in a 10 nm silica shell (see cover). Transmission electron micro graphs reveal how molecular iodine diffuses through the shell and reac ts with Ag, giving AgI. A single AgI particle (mid-gray) is shown to f orm on the surface of the silica while the Ag core shrinks.