Preparation of Highly Dispersed Core/Shell-type Titania Nanocapsules Containing a Single Ag Nanoparticle

摘要

Noble metal nanoparticles are known to exhibit various colors arising from surface plasmon absorption and size-dependent specific catalytic and optical properties.Although the nanoparticles have attracted attention in diverse fields of science and technology because of their interesting properties,they are hardly usable by themselves since they are poor at dispersion stability and tend to aggregate in the medium.Then,many attempts have been made to improve their dispersion stability by coating the surface with polymers,surfactants,and silica.