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Licensed Unlicensed Requires Authentication Published by De Gruyter August 19, 2008

Synthesis and Characterization of Ordered Mesoporous Carbon/Silica Hybrid Thin Films

  • Xiaoxian Wang , Tiehu Li , Qilang Lin , Dawei Wang and Tingkai Zhao

Carbon/silica nanocomposite films with a hexagonal P6mm structure were fabricated directly by the oxidation and carbonization of surfactant/silica nanocomposite films, which were obtained by a dip-coating technique through a combination of sol-gel and evaporation-induced self-assembly. The as-synthesized nanocomposite films were characterized by scanning electron microscopy, X-ray diffraction, transmission electron microscopy and N2 adsorption-desorption. These analyses reveal that the carbon/silica nanocomposite films, with a narrow pore size distribution of mesopores, have an ordered symmetric structure. The pore sizes of this hybrid film can be controlled within a certain range by changing the carbonization temperature. In addition, the films are composed of a continuous silica matrix and a continuous carbon coating in about 1 nm adhered well to the silica matrix. The formation of carbon coatings from surfactant acts as a framework support to prevent the pore size of the silica matrix from shrinking.

Published Online: 2008-8-19

©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston

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