Issue 32, 2011
From the journal:

Journal of Materials Chemistry

Ultralow density, hollow silica foams produced through interfacial reaction and their exceptional properties for environmental and energy applications†

Qin Yue,a   Yuanzhi Li,*ac   Ming Kong,a   Jichao Huang,a   Xiujian Zhao,a   Jun Liu*b  and  Ralph E. Willifordb  

* Corresponding authors

a State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, P. R. China
E-mail: liyuanzhi66@hotmail.com

b Pacific Northwest National Laboratory, Richland, Washington, U. S. A.

c Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Hubei Normal University, Huangshi, Hubei, P. R. China

Abstract

We report a novel, facile, and reproducible method for large-scale production of highly porous, hollow silica foams (hollow spheres) with a robust ultrathin shell of several nanometres through a simple, one-step, bubble-controlled, interfacial hydrolysis reaction. This material has exceptional properties, including ultralow density (0.028 g cm−3, approaching 99% porosity), good thermal stability up to 1000 °C, an exceptionally high capacity for oil uptake from mixed solvents (up to 25.6 cm3 g−1), and a very low thermal conductivity comparable to ultralow density silica aerogels.

Graphical abstract: Ultralow density, hollow silica foams produced through interfacial reaction and their exceptional properties for environmental and energy applications

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Article information

DOI
https://doi.org/10.1039/C1JM12040A
Article type
Paper
Submitted
09 May 2011
Accepted
19 May 2011
First published
05 Jul 2011

J. Mater. Chem., 2011,21, 12041-12046

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Ultralow density, hollow silica foams produced through interfacial reaction and their exceptional properties for environmental and energy applications

Q. Yue, Y. Li, M. Kong, J. Huang, X. Zhao, J. Liu and R. E. Williford, J. Mater. Chem., 2011, 21, 12041 DOI: 10.1039/C1JM12040A

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