Effect of SiCl4 on the preparation of functionalized mixed-structure silica from monodisperse sol
By Moreno, Y. P.; Cardoso, M. B.; Ferr
Published in Chemical Engineering Journal
NULL
2016
Abstract
Abstract Mesoporous functionalized nanoparticles (nanosilica) and functionalized mixed-structure silica with surface Si-Cl groups were prepared via a SiCl4 hydrolysis base-catalyzed sol-gel process. This study presents hierarchically structured systems formed via growth and self-assembly of functionalized silica nanospheres on the surface of Sylopol-948, generating functionalized mixed-structure silica. The fabricated materials were characterized by nitrogen adsorption, small angle X-ray (SAXS), dynamic light scattering (DLS), zeta potential (ZP), infrared spectroscopy (FT-IR), and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX). The incorporation of Si-Cl groups (0.02-0.43 Cl/Si) on the surface
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