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.

Correlative Analysis of the Crystallization of Sol-Gel Dense and Mesoporous Anatase Titania Films / Innocenzi, Plinio; Malfatti, Luca; Kidchob, Tongjit; Enzo, Stefano; Della Ventura, Giancarlo; Schade, Ulrich; Marcelli, Augusto. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 114:51(2010), pp. 22385-22391. [10.1021/jp1042766]

Correlative Analysis of the Crystallization of Sol-Gel Dense and Mesoporous Anatase Titania Films

INNOCENZI, Plinio;MALFATTI, Luca;ENZO, Stefano;
2010

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.
Correlative Analysis of the Crystallization of Sol-Gel Dense and Mesoporous Anatase Titania Films / Innocenzi, Plinio; Malfatti, Luca; Kidchob, Tongjit; Enzo, Stefano; Della Ventura, Giancarlo; Schade, Ulrich; Marcelli, Augusto. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 114:51(2010), pp. 22385-22391. [10.1021/jp1042766]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/61365
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