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People spend most of their lives indoors. People in the new century need not only comfortable and clean living environment, but also good for physical and mental health. Many developed countries in the world, such as Japan, the United States, Western Europe, have been committed to the protection of environmental buildings and health building materials research. The photocatalytic material developed by Japan is a revolution in purifying functional materials. Glass and ceramics were used as carriers, and TIQ photocatalyst was added to convert water and oxygen into active oxygen radicals under ultraviolet light. These free radicals then converted SO2, NOX and other polluted gases into harmless gases or acids.
Air purifying glass fiber fluffy filter felt
The principle of photocatalyst is used to purify the air without power or chemical raw materials, only under the condition of ultraviolet light. In order to improve the photocatalytic efficiency, Osaka Prefecture University is studying photocatalysis under visible light. Ecoodevice has invented a method of photocatalysis under visible light, i. e. special treatment of the surface of TiQ2 with a certain material, which has increased the photocatalytic efficiency by 10 times. This method is intended for use in wet solar cells and purifying functional building materials. Many research departments, such as the Japanese Institute of Resources and Environmental Technology and Osaka Prefectural University, have carried out field experiments on the wall for purifying NOx. Mitsubishi Material (Mitsubishi) formally began to produce "weeds" in 1999. According to reports, the exclusive production chain of 15 manufacturers, an annual output of 9 million square meters, the price of 120,000 yen per square meter, NOx purification effect can reach 80%. Japan's big valley stone is a natural purification material with deodorant and moisture absorption function. In addition, zeolite and iron porous materials can be used as air purification materials, but they can not solve the long-term use of the problem. Up to now, only photocatalytic purification technology can purify the air for a long time.
Health and antibacterial
In nature, the transformation of inorganic matter into organic matter mainly depends on plant photosynthesis, while microorganisms play a major role in the transformation of organic matter into inorganic matter. Therefore, in addition to the environment of air, water and environment, the ecological environment also includes microbial environment. However, the hidden dangers and threats brought by microbes to human health can not be ignored. According to World Health Organization statistics in 1998, the number of deaths caused by bacterial infections was 17 million in 1995. In 1996, a nationwide outbreak of E. coli O-157 infection in Japan caused panic all over the world. Therefore, Japan has launched an "antibacterial fever", not only in hospitals, public places and residential areas.
Purifying indoor air tiles
Antibacterial materials are gradually applied to daily necessities and production tools. The annual sales volume of antibacterial agents exceeds 21 billion yen, and the total number of production plants is more than 100. Sales of antibacterial products amounted to more than 50 billion yen. The products of INAX and TOTO, Japan's two largest architectural and sanitary porcelain companies, are now mostly antibacterial. The origin of antimicrobial materials can be traced back to ancient silver or copper containers, in which water was not easily deteriorated. It began to be used for clothing in twentieth Century. Food and shelter are used to control harmful microorganisms. After the emergence of anti-bacterial and odor-proof fiber products in the 1980s, anti-bacterial products have been involved in wood, paint, plastics, metals, food cosmetics and telephone, computer, stationery, toys and other daily contact items. Antibacterial materials can be divided into inorganic antibacterial materials and organic antibacterial materials. The latter has short service life and is harmful to human body and is not easy to use in building materials.