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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 1
BKCSDE 35(1)
January 20, 2014 

 
Title
Synthesis of Hollow Silica by Stöber Method with Double Polymers as Templates
Author
Anh-Thu Nguyen, Chang Woo Park, Sang Hern Kim*
Keywords
Hollow silica, Polyelectrolyte, Stöber method, Double polymers as templates, Colloid micelle
Abstract
The hollow SiO2 spheres with uniform size were synthesized by a modified Stöber method under the control of polyelectrolytes (PSS and PAA) as templates. This synthetic route includes the formation of spherical colloid micelle in ethanol solution, hydrolysis of TEOS under control of ammonia, and the removal of polyelectrolyte by washing or calcination. Hollow silica spheres with controllable core diameters between 100 and 270 nm and wall thickness between 15 and 50 nm have been synthesized. The influence of template solution concentration and solvent and dispersant on the formation of silica hollow spheres is studied and reported in detail.
Page
173 - 176
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