ZrO₂ Nano-coating on Nano-particles by Liquid Phase Deposition

Abstract

Tetragonal ZrO₂ was coated on the SiO₂ nanoparticles by liquid phase deposition. In this study, the liquid phase deposition was carried out using the boric acid as the fluoride ion scavengers. The amount of the nano-coated ZrO₂ was controlled by the amount of the fluoride ion scavengers. As a result, the highest yield of the ZrO₂ nanocoating process was attained at [HBO₃]/[Zr] = 20.0 condition. After the annealing at 900°C for 1 hour, the tetragonal ZrO₂ was confirmed by XRD and Raman analysis. Namely, the SiO₂-ZrO₂ core-shell hybrid particles was obtained by controlled liquid phase deposition process.