A Facile Approach for the Fabrication of Monodisperse Hollow Silica Spheres

Chem. J. Chinese Universities

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A Facile Approach for the Fabrication of Monodisperse Hollow Silica Spheres

DENG Zi-Wei, CHEN Min, ZHOU Shu-Xue, YOU Bo, WU Li-Min

Department of Materials Science, the Advanced Coatings Research Center of Educational Ministry of China, Fudan University, Shanghai 200433, China

Received:2006-04-03 Revised:1900-01-01 Online:2006-10-10 Published:2006-10-10
Contact: WU Li-Min

Abstract

Abstract: This paper presents a facile method for fabrication of monodisperse hollow silica spheres. In the approach, the monodispersed PS microspheres with different sizes prepared by dispersion polymerization or emulsifier-free emulsion polymerization were used as the template microspheres respectively, the silica shells were then coated on the PS microspheres by sol-gel method. During the coating of silica shell, the PS cores were dissolved subsequently even synchronously in the same medium to directly form monodispersed hollow spheres. TEM, SEM and porosity measurements were used to characterize the monodisperse hollow silica spheres. Based on the experimental results and discussion, a possible formation mechanism of the hollow silica spheres was proposed.

Key words: Silica, Hollow spheres, Sol-gel, Fabrication

CLC Number:

O614
O632.52

TrendMD:

DENG Zi-Wei, CHEN Min, ZHOU Shu-Xue, YOU Bo, WU Li-Min. A Facile Approach for the Fabrication of Monodisperse Hollow Silica Spheres[J]. Chem. J. Chinese Universities, doi: .

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A Facile Approach for the Fabrication of Monodisperse Hollow Silica Spheres

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