ZnO/SiO2 nanocomposite cryogels prepared by vacuum freeze drying

Li Fen Su, Lei Miao, Sakae Tanemura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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/SiO 2 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).

Original languageEnglish
Title of host publicationOptoelectronic Materials
EditorsYuan Ming Huang
PublisherTrans Tech Publications Ltd
Pages1242-1246
Number of pages5
ISBN (Print)0878492119, 9780878492114
DOIs
Publication statusPublished - 2011
Externally publishedYes

Publication series

NameMaterials Science Forum
Volume663-665
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Keywords

  • Sol-gel co-precursor
  • Vacuum freeze drying

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Su, L. F., Miao, L., & Tanemura, S. (2011). ZnO/SiO2 nanocomposite cryogels prepared by vacuum freeze drying. In Y. M. Huang (Ed.), Optoelectronic Materials (pp. 1242-1246). (Materials Science Forum; Vol. 663-665). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.663-665.1242