Silica Aerogel: Synthesis and Applications
- Gurav, Jyoti L. Department of Materials Science and Engineering, Yonsei University, 120-749 Seoul, Republic of Korea
- Jung, In-Keun Department of Materials Science and Engineering, Yonsei University, 120-749 Seoul, Republic of Korea
- Park, Hyung-Ho Department of Materials Science and Engineering, Yonsei University, 120-749 Seoul, Republic of Korea
- Kang, Eul Son Agency for Defense Development, Daejeon 305-600, Republic of Korea
- Nadargi, Digambar Y. Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Building Technologies, 8600 Dubendorf, Switzerland
Published in:
- Journal of Nanomaterials. - Hindawi Limited. - 2010, vol. 2010, p. 1-11
English
Silica aerogels have drawn a lot of interest both in science and technology because of their low bulk density (up to 95% of their volume is air), hydrophobicity, low thermal conductivity, high surface area, and optical transparency. Aerogels are synthesized from molecular precursors by sol-gel processing. Special drying techniques must be applied to replace the pore liquid with air while maintaining the solid network. Supercritical drying is most common; however, recently developed methods allow removal of the liquid at atmospheric pressure after chemical modification of the inner surface of the gels, leaving only a porous silica network filled with air. Therefore, by considering the surprising properties of aerogels, the present review addresses synthesis of silica aerogels by the sol-gel method, as well as drying techniques and applications in current industrial development and scientific research.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1155/2010/409310
- ISSN 1687-4110
- Persistent URL
- https://sonar.ch/global/documents/196790
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