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Journal of Sol-Gel Science and Technology

, Volume 68, Issue 1, pp 102–109 | Cite as

Fabrication and characterization of composition-gradient CuO/SiO2 composite aerogel

  • Jun Tang
  • Ai Du
  • Weiwei Xu
  • Guangwu Liu
  • Zhihua Zhang
  • Jun Shen
  • Bin Zhou
Original Paper

Abstract

With tetramethoxysilane as the silica precursor, CuCl2·2H2O as the copper–oxide precursor, acetonitrile as the solvent and gelled by PO via a sol–gel process, the CuO/SiO2 composite aerogel was fabricated. By adjusting the amount of CuCl2·2H2O, CuO/SiO2 composite aerogels with different molar ratio of Cu/Si such as 1, 5, 10, 20, 30 and 35 % was prepared. Finally, via a self-built device and sol-co-gelation technic, a continuous formation process was developed to fabricate the composition-gradient CuO/SiO2 composite aerogel. Density of these aerogels was about 200 mg/cm3, the composition-gradient CuO/SiO2 composite aerogel was cylindrical and about 2.5 cm in height. Scanning electron microscope was used to characterize its microstructure at different position. X-ray diffraction, energy dispersive spectrometer and Fourier transform infrared spectrometer were used to characterize its composition and composition distribution, the results showed that the cylindrical CuO/SiO2 composite aerogel’s molar ratio of Cu/Si changed from 31.06 to 4.43 % as the measure point from the bottom up, the whole sample displayed obvious composition-gradient.

Keywords

Composite aerogel Composition-gradient Sol-co-gelation Continuous formation 

Notes

Acknowledgments

This work was supported by National Natural Science Foundation of China (51102184, 51172163), Shanghai Committee of Science and Technology (12nm0503001), National Science and Technology Support Program (SQ2011BAJY3505), National High Technology Research and Development Program of China (2013AA031801).

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Jun Tang
    • 1
  • Ai Du
    • 1
  • Weiwei Xu
    • 1
  • Guangwu Liu
    • 1
  • Zhihua Zhang
    • 1
  • Jun Shen
    • 1
  • Bin Zhou
    • 1
  1. 1.Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and EngineeringTongji UniversityShanghaiChina

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