Paper Title:
ZnO/SiO2 Nanocomposite Cryogels Prepared by Vacuum Freeze Drying
  Abstract

In recent years, ZnO/SiO2 nanocomposite thin films have attracted much attention for a wide range of device applications based on their specific optical and electrical properties. Traditionally, the ZnO/SiO2 nanocomposites were prepared at the form of thin film because the ZnO/SiO2 nanocomposite gels are difficult to synthesize. Therefore, in the present study, a novel route of the mixed ZnO/SiO2 nanocomposite cryogels were prepared by sol-gel technology and dried by vacuum freeze drying. The wet gels were synthesized by co-precursor method with the precursors containing tetraethoxysilane [Si(OC2H5)4,TEOS] and zinc acetate [Zn(CH3COO)2.2H2O]. After vacuum freeze drying, the nanocomposites were annealed at different temperature. The properties of the resulting ZnO/SiO2 nanocomposite cryogels were characterized using Scanning Electron Microscopy (SEM), nitrogen absorption/desorption isotherms, thermogravimetric and differential scanning calorimeter (TG-DSC).

  Info
Periodical
Materials Science Forum (Volumes 663-665)
Edited by
Yuan Ming Huang
Pages
1242-1246
DOI
10.4028/www.scientific.net/MSF.663-665.1242
Citation
L. F. Su, L. Miao, S. Tanemura, "ZnO/SiO2 Nanocomposite Cryogels Prepared by Vacuum Freeze Drying", Materials Science Forum, Vols. 663-665, pp. 1242-1246, 2011
Online since
November 2010
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Price
$32.00
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