NHK – New photocatalyst activated by indoor lighting – Video

Video Link: https://www.youtube.com/watch?v=GUujx4pbYSE

NHK - New photocatalyst activated by indoor lighting
NHK World News ---- Nippon H #333;s #333; Ky #333;kai Description -- A group of Japanese researchers has developed a new type of photocatalytic material that can be activated by indoor lighting. The material is expected to be used in a variety of ways, such as in air cleaners, to help protect homes and offices from harmful bacteria and viruses. Photocatalysts dissolve dirt and kill bacteria through exposure to ultraviolet light. But existing types are less effective indoors, where ultraviolet light is comparatively weak. The team includes researchers from the University of Tokyo. The new material is made using a special process in which copper compounds are attached to existing photocatalysts. The researchers found that when the new material is placed in a room lit by fluorescent lights, more than 99 percent of viruses lost their infectiousness in one hour. They also found that more than 70 percent of bacteria died when the material was attached to the walls of hospital toilets or airport luggage carts. University of Tokyo Professor Kazuhito Hashimoto, who heads the research team, says it is significant that photocatalysts can now be used indoors. Hashimoto said he expects the new material will be put to practical use. Oct. 14, 2012 - Updated 03:54 UTC (12:54 JST)From:NHKReloadedViews:48 2ratingsTime:00:56More inScience Technology

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NHK - New photocatalyst activated by indoor lighting - Video