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

Mike B. Fisher, Donal A. Keane, P Fernandez Ibanez, John Colreavy, Steven J. Hinder, Kevin G. McGuigan, Suresh C. Pillai

Research output: Contribution to journalArticle

109 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
JournalApplied Catalysis B: Environmental
Volume130-13
DOIs
Publication statusAccepted/In press - 14 Oct 2012

Keywords

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

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