News Column

University of Ottawa Details Findings in Photocatalytics

May 27, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Photocatalytics are presented in a new report. According to news reporting from Ottawa, Canada, by NewsRx journalists, research stated, "The modification of photocatalysts by silver addition or deposition can be used to increase photocatalytic efficiencies by preventing photogenerated electron-hole recombination through electron trapping mechanisms, and by increasing visible light absorption of the composite materials through the surface plasmon resonance enhancement of silver nanoparticles. Nanosilver also possesses excellent antimicrobial activity, and can be used as a biocidal agent when incorporated into TiO2 photocatalysts."

The news correspondents obtained a quote from the research from the University of Ottawa, "Alternatively, the host photocatalyst may also contribute to antimicrobial activity observed in the absence of irradiation, such as for AgX (X = Cl, Br, I) and ZnO. These silver-modified composites present a novel class of hybrid photocatalysts, which possess antibacterial and/or antiviral action in both dark and light conditions, and are discussed in detail in this review. In addition, other antimicrobial photocatalysts such as those based on copper are examined."

According to the news reporters, the research concluded: "Further work should be performed on these materials to distinguish the roles of acting mechanisms in the light-induced disinfection processes."

For more information on this research see: Antimicrobial and photocatalytic disinfection mechanisms in silver-modified photocatalysts under dark and light conditions. Journal of Photochemistry and Photobiology C-Photochemistry Reviews, 2014;19():62-75. Journal of Photochemistry and Photobiology C-Photochemistry Reviews can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Photocatalytics).

Our news journalists report that additional information may be obtained by contacting J.G. McEvoy, University of Ottawa, Dept. of Chem & Biol Engn, Ottawa, ON K1N 6N5, Canada.

Keywords for this news article include: Ottawa, Canada, Ontario, Photocatalyst, Nanotechnology, Emerging Technologies, North and Central America

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Source: Life Science Weekly

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