Surface charge control of hierarchical ceria/silica hybrid shells for enhanced dispersion stability

Although ceria particles are currently receiving great interest with their unique catalytic and optical properties, the problem of agglomeration is yet to be overcome, which caused by high density surface energy, consequently hampering practical applications. Herein, a novel method preparing hierarchical shells (CeO2) silica (SiO2) on polystyrene (PS) core introduced control shape charge particle, give rise different dispersion conditions. The PS/CeO2/SiO2 hybrid core–shell microspheres provide wide spectrum via adjustment thickness outermost shell from 20 40 nm, sets isoelectric point (IEP) in range 5.1–8.6. Subsequently, significantly extends product’s stability utilization windows due controlled affinity between particle medium. developed multilayered synthesis have potential for various applications that require sophisticated properties.