Fast and facile synthesis of silica coated silver nanoparticles by microwave irradiation

rFast and facile synthesis of silica coated silver nanoparticles by microwave irradiation: "Publication year: 2010
Source: Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 13 December 2010
Newaz Mohammed, Bahadur , Takeshi, Furusawa , Masahide, Sato , Fumio, Kurayama , Iqbal Ahmed, Siddiquey , ...
A novel, fast and facile microwave technique has been developed for preparing monodispersed silica coated silver (Ag@SiO2) nanoparticles. Without using any other surface coupling agents such as 3-aminopropyltrimethoxysilane (APS) or polymer such as polyvinyl pyrrolidone (PVP), Ag@SiO2 nanoparticles could be easily prepared by microwave irradiation of a mixture of colloidal silver nanoparticles, tetraethoxysilane (TEOS) and catalyst for only 2 min. The thickness of silica shell could be conveniently controlled in the range of few nanometers (nm) to 80 nm by changing the concentration of TEOS. Transmission electron microscopy (TEM) and UV-visible spectroscopy were employed to characterize the morphology and optical...
Silica coated silver nanoparticles with different silica-shell thickness were prepared by a novel, fast and facile microwave (MW) technique. Prepared particles were functionalized with different groups for many applications.
"