Influence of temperature on the photocatalytic activity of sol-gel TiO 
                    2 films

Stefano Costacurta; Gabriele Dal Maso; Riccardo Gallo; Massimo Guglielmi; Giovanna Brusatin; Paolo Falcaro

doi:10.1021/am100149e

Influence of temperature on the photocatalytic activity of sol-gel TiO 2 films

Stefano Costacurta, Gabriele Dal Maso, Riccardo Gallo, Massimo Guglielmi, Giovanna Brusatin, Paolo Falcaro^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The photocatalytic activity of TiO ₂ films synthesized via the sol-gel process has been measured as a function of UV irradiation time and substrate temperature. Fourier-transform infrared spectroscopy has been used to address the chemical changes in stearic acid and block copolymer Pluronic F127 films deposited on the photocatalytic surface. When the temperature of the photocatalytic substrate was raised above 50 °C, the removal of stearic acid from the surface was strongly affected by a process involving evaporation, whereas Pluronic F127 revealed a superior stability. Our study shows that heat enhances the photocatalytic activity, suggesting the importance of an accurate temperature control in photocatalytic efficiency measurements.

Original language	English
Pages (from-to)	1294-1298
Number of pages	5
Journal	ACS Applied Materials & Interfaces
Volume	2
Issue number	5
DOIs	https://doi.org/10.1021/am100149e
Publication status	Published - 26 May 2010
Externally published	Yes

Keywords

Block copolymer
Fourier transform infrared spectroscopy
Photocatalysis
Pluronic F127
Stearic acid
Titanium dioxide

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1021/am100149e

Cite this

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title = "Influence of temperature on the photocatalytic activity of sol-gel TiO 2 films",

abstract = "The photocatalytic activity of TiO 2 films synthesized via the sol-gel process has been measured as a function of UV irradiation time and substrate temperature. Fourier-transform infrared spectroscopy has been used to address the chemical changes in stearic acid and block copolymer Pluronic F127 films deposited on the photocatalytic surface. When the temperature of the photocatalytic substrate was raised above 50 °C, the removal of stearic acid from the surface was strongly affected by a process involving evaporation, whereas Pluronic F127 revealed a superior stability. Our study shows that heat enhances the photocatalytic activity, suggesting the importance of an accurate temperature control in photocatalytic efficiency measurements.",

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AU - Gallo, Riccardo

AU - Guglielmi, Massimo

AU - Brusatin, Giovanna

AU - Falcaro, Paolo

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