One-pot synthesis of Ag@TiO2 core-shell nanoparticles and their layer-by-layer assembly

Citation
I. Pastoriza-santos et al., One-pot synthesis of Ag@TiO2 core-shell nanoparticles and their layer-by-layer assembly, LANGMUIR, 16(6), 2000, pp. 2731-2735
Citations number
40
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LANGMUIR
ISSN journal
07437463 → ACNP
Volume
16
Issue
6
Year of publication
2000
Pages
2731 - 2735
Database
ISI
SICI code
0743-7463(20000321)16:6<2731:OSOACN>2.0.ZU;2-L
Abstract
Silver nanoparticles coated with a uniform, thin shell of titanium dioxide are synthesized via a remarkably simple one-pot route, where the reduction of Ag+ to Ag-0 and the controlled polymerization of TiO2 on the surface of silver crystallites take place simultaneously. The prepared dispersions of coated nanoparticles display a surface plasmon band, which is significantly red-shifted with respect to that of bare AK. High quality ultrathin films of the core-shell clusters are prepared via layer-by-layer assembly. The na noparticles are arranged in closely packed layers interlaced with polyelect rolyte producing a stratified core-shell hybrid material with unique struct ure and catalytic and electron-transport properties.