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Article | REF: J1270 V1

Photo-catalysis: water or air depollution and self-cleaning materials

Authors: Chantal GUILLARD, Benoit KARTHEUSER, Sylvie LACOMBE

Publication date: November 10, 2011, Review date: October 1, 2020

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5. Applications in self-cleaning materials

As early as the mid-1990s, the Japanese construction industry was looking into the potential use of photocatalytic materials to produce self-cleaning materials with aesthetic, pollution control and anti-fogging properties. It was only four years later that Europe initiated this type of research. In all cases, the photocatalyst used is titanium dioxide.

5.1 Principle of self-cleaning materials

Self-cleaning properties are based on two photo-induced properties: the first is the ability to oxidize organic soiling under the action of sunlight (photocatalytic reaction), and the second is due to photo-induced superhydrophilic properties that result in high surface wettability and enable inorganic or organic pollutants to be removed by water film formation....

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