Temperature matters: An infrared spectroscopic investigation on the photocatalytic efficiency of titania coatings

Paolo Falcaro, Gloria Zaccariello, Vanya Stoyanova, Alvise Benedetti, Stefano Costacurta

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Titania is one of the most studied photocatalytic materials for self-cleaning applications. To maximize the photocatalytic efficiency, different strategies are currently under investigation, such as control of the nano- or microstructure, optimization of the crystalline phase and addition of doping agents. A parameter too often neglected is temperature, which dramatically affects the self-cleaning processes in thin titanium dioxide (TiO2) films. In this study, we prepared a titania coating using the sol-gel route. Stearic acid and a triblock copolymer (Pluronic F127) were used as model pollutants. A dedicated heating cell was used to precisely control the temperature. The infrared spectroscopy was used to follow the amount of residual pollutant agents within 60 minutes every 10 °C. The photocatalytic reaction rate was calculated for the stearic acid in the 25-60 °C range.

Original languageEnglish
Pages (from-to)1330-1337
Number of pages8
JournalScience of advanced materials
Volume6
Issue number7
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

Stearic acid
Cleaning
UCON 50-HB-5100
Titanium
Infrared radiation
Coatings
Titanium dioxide
Block copolymers
Reaction rates
Sol-gels
Poloxamer
Infrared spectroscopy
Nanostructures
Doping (additives)
Crystalline materials
Heating
Temperature
Microstructure
titanium dioxide
stearic acid

Keywords

  • Photocatalysis
  • Self-cleaning
  • Sol-gel
  • Temperature
  • Titania

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Temperature matters : An infrared spectroscopic investigation on the photocatalytic efficiency of titania coatings. / Falcaro, Paolo; Zaccariello, Gloria; Stoyanova, Vanya; Benedetti, Alvise; Costacurta, Stefano.

In: Science of advanced materials, Vol. 6, No. 7, 2014, p. 1330-1337.

Research output: Contribution to journalArticleResearchpeer-review

Falcaro, Paolo ; Zaccariello, Gloria ; Stoyanova, Vanya ; Benedetti, Alvise ; Costacurta, Stefano. / Temperature matters : An infrared spectroscopic investigation on the photocatalytic efficiency of titania coatings. In: Science of advanced materials. 2014 ; Vol. 6, No. 7. pp. 1330-1337.
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