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Journal of Nanomaterials
Volume 2011, Article ID 597954, 9 pages
http://dx.doi.org/10.1155/2011/597954
Research Article

Mesoporous Titania Nanocrystals by Hydrothermal Template Growth

Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy

Received 6 May 2010; Revised 30 June 2010; Accepted 22 July 2010

Academic Editor: William W. Yu

Copyright © 2011 Giuseppe Cappelletti et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Mesoporous TiO2 nanocrystals have been synthetized by a classical sol-gel route integrated by an hydrothermal growth step using monomeric (dodecylpyridinium chloride, DPC) or dimeric gemini-like (GS3) surfactants as template directing agents. Adsorption isotherms at the solid/liquid interface of the two surfactants have been obtained on aqueous dispersion of titania; the nature of the oxide/adsorbate interactions and the molecules orientation/coarea are discussed. The effects produced by the presence of the two surfactants on the different morphological (surface area, porosity, and shape) and structural (phase composition and aggregate size) features of the final TiO2 samples, calcined at , are discussed.