Photocatalytic activity of Cu2+/TiO2-coated cordierite foam inactivates bacteriophages and Legionella pneumophila

Authors: Hitoshi Ishiguro, Yanyan Yao, Ryuichi Nakano, Masayuki Hara, Kayano Sunada, Kazuhito Hashimoto, Jitsuo Kajioka, Akira Fujishima, Yoshinobu Kubota

Abstract:
We investigated the antiviral activity of TiO₂-coated cordierite foam used in air cleaners, as well as the evaluation methodology. Furthermore, we developed Cu²⁺/TiO₂-coated cordierite foam and investigated the reduction in viral infection ratio. The method for evaluation of antibacterial activity of TiO₂-coated cordierite foam could also be applied to evaluation of antiviral activity. We showed that Cu²⁺/TiO₂-coated cordierite foam reduced the viral infection ratio to a greater extent than TiO₂-coated cordierite foam. Our findings suggest that the infection risk by polluted air could be decreased using Cu²⁺/TiO₂-coated cordierite foam in air cleaners.

Keywords:
Bacteriophages
Photocatalysis
Cu²⁺ TiO₂
Air cleaning filters

Published in: Applied catalysis B: Environmental  (Volume 129, Pages 1-614, 17 January 2013)

Publisher: Elsevier  

ISSN Information: 0926-3373

Photocatalytic activity of Cu2+/TiO2-coated cordierite foam inactivates bacteriophages and Legionella pneumophila

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