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

Abstract

Tetragonal ZrO 2 was coated on the SiO 2 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 nanocoated ZrO 2 was controlled by the amount of the fluoride ion scavengers. As a result, the highest yield of the ZrO 2 nanocoating process was attained at [HBO 3 ]/[Zr] = 20.0 condition. After the annealing at 900°C for 1 hour, the tetragonal ZrO 2 was confirmed by XRD and Raman analysis. Namely, the SiO 2 -ZrO 2 core-shell hybrid particles was obtained by controlled liquid phase deposition process.

SrTiO₃ nanocoating on a primary nanoparticle using metal alkoxide processing with chemical modification

“…Here, hybridization for the particle shape has two main avenues for processing: agglomeration control using particle technology 8), 9) and coating on the primary particle using knowledge of materials science. 1),10), 11) For coating processes, nanohybridization as a likely thin film shape is expected because nanocoating onto primary particles is similar to thin film deposition on the primary particles.…”

“…Therefore, ceramic nanocoatings on primary particles are widely studied. Moreover, ceramic nanocoatings are attempted by wet-processing in many cases such as liquid phase deposition 11) and solgel processing. 1),12) Many research reports describe results achieved for SiO 2 nano-coating on primary nanoparticles because Si alkoxide has moderate hydrolysis and polycondensation reactions, which lead to homogeneous coatings.…”