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Smog-eating Coating Questioned About Durability, Safety

FRIDAY, SEPTEMBER 3, 2010

By Harold Hower


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The proposed smog-eating purple skyscraper in Hong Kong, with photocatalytically active nanocoatings doing the smog-eating, has elicited a response from Flavio Visioli of Sestriere Vernici, a paint company in Italy.

Mr. Visioli says these TIO2-based nanocoatings do eat pollution, but also that their durability is poor and they have not been certified as safe to use (presumably by Italian or European regulatory bodies). You can read his comments after the end of my initial blog entry.

Are there similar concerns about these materials in other countries?  It would be interesting to know about commercial availability, real-world use (as in Japan, where it’s been reported that more than 50,000 square meters of surface area have been coated with these materials), and ongoing research.

ABOUT THE BLOGGER

Harold Hower

Harold Hower, CEO and founder of Technology Publishing Company, likes to think about ways of improving conditions in the architectural coatings industry.

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