Core-shell Au@(TiO_2, SiO_2) nanoparticles with tunable morphology

摘要

A novel approach based on the Stoeber method allows breaking of the symmetry of core-shell systems based on metallic core and metal oxide shell. By adjusting the proportion of the TiO_2 precursor with regard to the silica precursor, different morphologies of the particles have been obtained displacing the gold particle from center to eccentric positions leading to acorn-like and raspberry-like structure.