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Chinese Science Bulletin

, Volume 56, Issue 7, pp 685–690 | Cite as

Preparation of Cu-SiO2 composite aerogel by ambient drying and the influence of synthesizing conditions on the structure of the aerogel

  • GuiAn Li
  • TingLiang Zhu
  • ZhongXun Deng
  • YaJuan Zhang
  • Fei Jiao
  • HaiRong Zheng
Open Access
Article Materials Science
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Abstract

A copper-doped silica composite aerogel with high specific surface area was prepared using a sol-gel method at ambient pressure. A drying control chemical additive (DCCA) N,N-dimethylformamide (DMF) was introduced to the composite sol of tetraethyl orthosilicate (TEOS) and copper nitrate (Cu(NO3)2·3H2O) during the synthesizing process. The influence of the preparation conditions including Cu loading, catalyst concentration and heat treatment on the structure of copper-doped silica was investigated. The results showed that the obtained aerogel particles were uniformly distributed. The pore diameter was in a range of 2 to 15 nm. Heavier Cu loading benefited the formation of CuO crystalline, and reduced the specific surface area and pore diameter. When the catalyst concentration was high, the aggregation of Si-O network was reduced with the increase of it. The composite aerogel exhibited a good thermal stability after the heat treatment at high temperature.

Keywords

ambient drying synthesizing condition composite aerogel Cu-SiO2 
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Copyright information

© The Author(s) 2011

Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • GuiAn Li
    • 1
  • TingLiang Zhu
    • 1
  • ZhongXun Deng
    • 1
  • YaJuan Zhang
    • 1
  • Fei Jiao
    • 1
  • HaiRong Zheng
    • 1
  1. 1.College of Physics and Information TechnologyShaanxi Normal UniversityXi’anChina

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