Novel Surface Modification of ZnO Nanoparticles by Fluidized-Bed Jet Mill

摘要

A novel surface-modification technology by using fluidized-bed jet mill, as named mechanochemical surface modification, for modifying ZnO nanoparticles was introduced, and the deagglomeration and surface modification of ZnO nanoparticles were investigated. The properties of obtained ZnO nanoparticles were characterized by SEM, XRD, FT-IR and XPS. The experimental results showed that chemical bonding reaction between stearic acid and ZnO nanoparticles occurred that was beneficial to reduce the agglomeration of modified ZnO nanoparticles. Additionally, the optimal modification agent amount of stearic acid is 5% weight of ZnO powder, and the lattice structure of ZnO nanoparticles is not damaged after modification. The lipophilic degree (LD) of modified ZnO nanoparticles was also measured, and while the stearic acid amount was 5% the maximum value of LD was up to 32.9%.