Paper Title:
A Simple Synthesis of Mesoporous Silica Hollow Microspheres by Fast Hydrolysis and Condensation of Tetraethyl Orthosilicate
  Abstract

Mesoporous silica hollow microspheres were quickly synthesized with a simple reaction medium which only contains tetraethylorthosilicate (TEOS) as silica source, octylamine (OA) as template and water. It is proposed that a dispersion of TEOS-in-water is formed when water is added into the mixture of TOS and OA. Water becomes basic due to dissolution of OA. Fast hydrolysis and condensation of TEOS then occurs at the interface of droplets lead to the formation of silica shells. Hollows are formed due to the volume contraction caused by the large difference in the densities of condensed silica and liquid TEOS. In addition, OA assembles with silica, templating the nanopores in the silica shells.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
4335-4338
DOI
10.4028/www.scientific.net/AMR.189-193.4335
Citation
S. Q. Liu, J. C. Rao, H. X. Wang, H. Zhao, "A Simple Synthesis of Mesoporous Silica Hollow Microspheres by Fast Hydrolysis and Condensation of Tetraethyl Orthosilicate", Advanced Materials Research, Vols. 189-193, pp. 4335-4338, 2011
Online since
February 2011
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Price
$32.00
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