Nitrogen and copper doped solar light active TiO2 photocatalysts for water decontamination

Mike B. Fisher, Donal A. Keane, Pilar Fernández-Ibáñez, John Colreavy, Steven J. Hinder, Kevin G. McGuigan*, Suresh C. Pillai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

126 Citations (Scopus)

Abstract

A novel class of photocatalytic coating capable of degrading bacterial and chemical contaminants in the presence of visible sunlight wavelengths was produced by depositing a stable photocatalytic TiO2 film on the internal lumen of glass bottles via a sol-gel method. This coating was prepared in either undoped form or doped with nitrogen and/or copper to produce visible light-active TiO2 films which were annealed at 600°C and were characterized by Raman and X-ray photoelectron spectroscopy. The presence of doped and undoped TiO2 films was found to accelerate the degradation of methylene blue in the presence of natural sunlight, while copper-doped TiO2 films were found to accelerate bacterial inactivation (of Escherichia coli and Enterococcus faecalis) in the presence of natural sunlight.

Original languageEnglish
Pages (from-to)8-13
Number of pages6
JournalApplied Catalysis B: Environmental
Volume130-131
DOIs
Publication statusPublished - Feb 7 2013
Externally publishedYes

Keywords

  • Anatase
  • Bacterial deactivation
  • Contamination
  • Depollution
  • Disinfection
  • Emerging pollutants
  • Photocatalysis
  • SODIS
  • Sunlight
  • Thin film
  • Titanium dioxide
  • Visible light

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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