Below room temperature: How the photocatalytic activity of dense and mesoporous TiO2 coatings is affected

Erika Iveth Cedillo-González, Raffaele Riccò, Stefano Costacurta, Cristina Siligardi, Paolo Falcaro

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Different parameters such as morphology, porosity, crystalline phase or doping agents affect the self-cleaning performance of photocatalytic TiO2-based coatings. However, also environmental conditions have been found to play a major role on the photocatalytic self-cleaning property. Substrate temperature is a significant environmental variable that can drastically affect this process. This variable becomes of great importance especially for outdoor applications: many self-cleaning photocatalytic materials have been designed to be exposed to outdoor environments and consequently, can be exposed to variable temperatures depending on the season of the year and the typical weather of the geographical zone. Thus, understanding the influence of the most common outdoor temperatures on the self-cleaning performance of TiO2-based coatings is essential for the fabrication of any kind of photocatalytic self-cleaning materials (fabricated by coating technology) that is expected to be subjected to outdoor environments. In this work, the photocatalytic activity was studied by Fourier Transformed Infrared (FTIR) Spectroscopy varying the temperature in the 0 to 30 °C range for dense and mesoporous TiO2 coatings. The temperature conditions at which these coatings present better performances were identified, providing a deeper insight for the practical application of TiO2-based self-cleaning coatings.

Original languageEnglish
Pages (from-to)769-775
Number of pages7
JournalApplied Surface Science
Volume435
DOIs
Publication statusPublished - 30 Mar 2018

Fingerprint

cleaning
Cleaning
coatings
Coatings
room temperature
Temperature
temperature
weather
coating
Infrared spectroscopy
Porosity
infrared spectroscopy
Doping (additives)
Crystalline materials
porosity
Fabrication
fabrication
Substrates

Keywords

  • Dense TiO2
  • Film
  • Low temperature
  • Mesoporous TiO2
  • Photocatalysis
  • Self-cleaning
  • TiO2

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Below room temperature : How the photocatalytic activity of dense and mesoporous TiO2 coatings is affected. / Cedillo-González, Erika Iveth; Riccò, Raffaele; Costacurta, Stefano; Siligardi, Cristina; Falcaro, Paolo.

In: Applied Surface Science, Vol. 435, 30.03.2018, p. 769-775.

Research output: Contribution to journalArticleResearchpeer-review

Cedillo-González, Erika Iveth ; Riccò, Raffaele ; Costacurta, Stefano ; Siligardi, Cristina ; Falcaro, Paolo. / Below room temperature : How the photocatalytic activity of dense and mesoporous TiO2 coatings is affected. In: Applied Surface Science. 2018 ; Vol. 435. pp. 769-775.
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