SILVER CLUSTERS AND NANOPARTICLES - PREPARATION IN WATER-IN-OIL MICROEMULSIONS AND SOME PHYSICAL-PROPERTIES

Authors
PAVLYUKHINA LA ZAIKOVA TO ODEGOVA GV SAVINTSEVA SA BOLDYREV VV
Citation
La. Pavlyukhina et al., SILVER CLUSTERS AND NANOPARTICLES - PREPARATION IN WATER-IN-OIL MICROEMULSIONS AND SOME PHYSICAL-PROPERTIES, Inorganic materials, 34(2), 1998, pp. 109-113
Citations number
12
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
34
Issue
2
Year of publication
1998
Pages
109 - 113
Database
ISI
SICI code
0020-1685(1998)34:2<109:SCAN-P>2.0.ZU;2-I
Abstract
Silver clusters and colloidal nanoparticles were prepared by reducing AgNO3 with sodium hypophosphite in water-in-oil microemulsions in the presence of a mixture of ethoxylated alkylphenols as a surface-active substance (SAS). Ag/SAS/AL(2)O(3) materials containing 0.04-0.13 wt % Ag were prepared by applying the microemulsions to an Al2O3 support an d studied by diffuse reflection electronic spectroscopy, small-angle x -ray scattering, and x-ray diffraction. Ag particles in Ag/SAS/Al2O3 m aterials have a mean size of similar or equal to 70 Angstrom. The abso rption band at 385 nm in the electronic spectra indicates that the nan oparticles consist of isolated clusters.