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Correlative analysis of the crystallization of sol−gel dense and mesoporous anatase titania films

Innocenzi, Plinio and Malfatti, Luca and Kidchob, Tongjit and Enzo, Stefano and Della Ventura, Giancarlo and Schade, Ulrich and Marcelli, Augusto Claudio (2010) Correlative analysis of the crystallization of sol−gel dense and mesoporous anatase titania films. The Journal of Physical Chemistry. C, Vol. 114 (51), p. 22385-22391. eISSN 1932-7455. Article.

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DOI: 10.1021/jp1042766

Abstract

Mesoporous and dense sol−gel titania films have been synthesized and processed in similar conditions to make a comparative study of crystallization to anatase in porous and dense samples. We have performed a correlative analysis combining THz spectroscopy with synchrotron radiation, variable angle incidence infrared spectroscopy, spectroscopic ellipsometry and grazing incidence X-ray diffraction to characterize the structure of titania films as a function of thermal processing conditions. THz spectra have shown that small anatase crystalline clusters are already present in the as-deposited samples, and both crystallization and growth process are favored in the mesoporous films. Moreover, the analysis by X-ray diffraction and variable angle incidence infrared spectroscopy has allowed identification of the presence of small textures in the samples.

Item Type:Article
ID Code:5781
Status:Published
Refereed:Yes
Uncontrolled Keywords:Sol−gel dense, crystallization, x-ray diffraction, mesoporous films, x-ray diffraction
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
001 Università di Sassari > 01 Dipartimenti > Architettura e pianificazione > LMNT-Laboratorio di Scienza dei Materiali e NanoTecnologie
Publisher:American Chemical Society
eISSN:1932-7455
Deposited On:10 May 2011 17:33

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