Characteristics of silica nanopowders and sol containing immobilized nanoparticles
of copper or silver (in English)
Polimery 2011, No 10, 765
Silica nanoparticles (NP's) with immobilized NP's of copper or silver were synthesized by means of sol-gel process. The optimization of silica NP's synthesis was carried out under different conditions of temperature and stirring rate. Our results confirmed that the stirring rate plays an important role in growth, polydispersity and stability of nanoparticles. The properties of nanosilica containing immobilized nanosilver or nanocopper were examined by scanning electron microscopy (SEM), atomic absorption spectroscopy (AAS), photon correlation spectroscopy (PCS) and zeta potential analysis.
Key words: nanosilica, copper nanoparticles, silver nanoparticles, zeta potential, photon correlation spectroscopy