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Synthesis and characterization of mesoporous silica core-shell particles

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Author(s): Milan Nikolić | Konstantinos P. Giannakopoulos | Vladimir V. Srdić

Journal: Processing and Application of Ceramics
ISSN 1820-6131

Volume: 4;
Issue: 2;
Start page: 81;
Date: 2010;
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Keywords: Silica | Core-shell particles | Synthesis

ABSTRACT
Core-shell particles were formed by deposition of primary silica particles synthesized from sodium silicate solution on functionalized silica core particles (having size of ~0.5 µm) prepared by hydrolysis and condensation of tetraethylortosilicate. The obtained mesoporous shell has thickness of about 60 nm and consists of primary silica particles with average size of ~21 nm. Scanning electron microscopy and zeta potential measurements showed that continuous silica shell exists around functionalized core particles which was additionally proved by FTIR and TEM results.
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