Application Status and Prospects of Japanese Titanium Dioxide Catalyst Technology
Titanium dioxide (anatase titanium dioxide), as a new photocatalyst, with its fantastic features, much favored in Japan, use it to create all sorts of new products have come out, as a new industrial technology, is The rise of Japan.
Titanium dioxide is excited by the internal electrons after being exposed to ultraviolet light from sunlight or fluorescent lamps. As a result, negatively charged electrons and positively charged holes are generated. The electrons reduce the oxygen in the air or water to form hydrogen peroxide, and the holes act in the direction of oxidizing surface water molecules, producing hydrogen oxy(hydroxy)-based radicals. These are all active oxygen and have a strong oxidative decomposition ability to decompose and remove various organic substances attached to the surface of titanium oxide. Titanium dioxide not only has a strong oxidative decomposition ability, but also has its own advantages of not decomposing, acting almost permanently, and utilizing sunlight and fluorescent light.
At present, Japanese companies, universities, and government research institutions are actively developing applications for the photocatalytic function of titanium dioxide. Its use is concentrated in the fields of environmental protection and health care. This technology is applied to high-rise buildings, soundproof walls on both sides of highways, street lamps and other devices, kitchen and bath tiles, automotive spray materials, road surfaces, various disinfection, deodorization supplies, fruit preservation, purification and waste disposal. Wastewater discharged by the field and scientific research institutions.
Superhydrophilicity is also unique to titanium dioxide photocatalysts. This feature was discovered in 1995 by Toto Jun, a scientist at Toto Corporation. He has used this feature to make a variety of products, such as automotive rearview mirrors, waterproof steam and antifouling glass, ceramics, etc. Currently, he is also developing a variety of products such as antifouling plastics and antifouling liquid crystal displays using photocatalysts.
Titanium oxide catalysts have now been hailed as "environmental catalysts" in Japan. According to the investigation and prediction of Mitsubishi Research Institute, in the fields of exhaust gas purification, deodorization, water treatment, antifouling, etc., photocatalyst has broad application prospects, and the market scale is rapidly expanding. By 2005, it can reach 111.2 billion yen. , 20 times more than now.
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