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The importance of pure-phase titanium oxide materials as catalysts, sensors, and photonic band-gap materials has been growing steadily. Recently, more attention has been focused on nanostructured titanium oxide showing controlled and periodic porosity on a nanometric scale. The nanocrystal size control of porous nanostructured titanium oxide in an anatase form is a crucial step for the organic template method. Simple template removal by evaporation in an inert atmosphere is reported in this article and compared with the calcination technique usually reported in the literature. The proposed method allows the formation of a double-porous (macro and meso) anatase phase. We demonstrate that it highly preserves the macropore order into a titanium oxide material and induces narrowly dispersed mesopores by controlling the nano-crystal size that is kept around 6 nm. For the proposed method, polystyrene …
Academic Press
Publication date: 
1 Oct 2005

Chiara Dionigi, Gianluca Calestani, Tiziano Ferraroni, Giampiero Ruani, Leonarda F Liotta, Andrea Migliori, Petr Nozar, Dimitros Palles

Biblio References: 
Volume: 290 Issue: 1 Pages: 201-207
Journal of colloid and interface science