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 journalArticle

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 languageEnglish
Pages (from-to)1294-1298
Number of pages5
JournalACS Applied Materials & Interfaces
Volume2
Issue number5
DOIs
Publication statusPublished - 26 May 2010
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

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