Applications of Titanium Dioxide Photocatalysis to by Yoshihiko Ohama, Dionys Van Gemert PDF

By Yoshihiko Ohama, Dionys Van Gemert

ISBN-10: 9400712960

ISBN-13: 9789400712966

Titanium dioxide photocatalysis relies at the semiconducting nature of its anatase crystal kind. building fabrics with titanium photocatalyst convey performances of air purification, self-cleaning, water purification, antibacterial motion.

This ebook describes rules of titanium dioxide photocatalysis, its functions to cementitious and noncementitious fabrics, in addition to an outline of standardization of trying out methods.

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Additional info for Applications of Titanium Dioxide Photocatalysis to Construction Materials: State-of-the-Art Report of the RILEM Technical Committee 194-TDP

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These techniques may vary considerably depending on the substrates, for example, tile, glass or plastics. Therefore, photocatalytic coating agents applicable to various materials are needed, and indeed are being developed. These coating agents may be divided into two categories. The first category consists of coating agents that require high-temperature heat treatment to harden the titanium dioxide films, based on the existing thin-film-forming technique. The second category consists of coating agents that make use of a low-temperature curing step made possible by the compounding of polymers and inorganic compounds.

The gross sales of Japanese photocatalyst market in 2005 were about 60 billion yen and two-third of them concerned construction materials (researched by Photocatalysis Industry Association of Japan). Photocatalyst technologies and applied products are expected to meet the demands of society, such as conserving the global environment as well as preserving the aesthetics of buildings and prolonging their lives. The need to establish unified assessment methods on functions and performance of photocatalysts becomes urgent.

Among various application fields of TiO2 photocatalysis in construction, building finishing materials with self-cleaning ability are most popular. Some prefabricated house manufacturers supplied new type of houses with photocatalyst-coated tile finishing or external finishing boards on the market a few years ago. 1 shows an overview on the present status of different international and national standards which are published or under preparation. 1. 3. Standardization of evaluation test methods for various performance of photocatalytic materials has been intensively pushed forward.

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Applications of Titanium Dioxide Photocatalysis to Construction Materials: State-of-the-Art Report of the RILEM Technical Committee 194-TDP by Yoshihiko Ohama, Dionys Van Gemert


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