The Functions of Photocatalyst
http://www.ultraclean-cn.com/ 2009-12-2 9:39:37[Brief] Air Purification Nanometer TiO2 Photo Catalyst exposed in certain wavelength ultraviolet can drive oxidation-deoxidize reaction to decompose formaldehyde benzene, ammonia, TVOC, sulfur dioxide ,carbon monoxide, nitrogen oxide in air and form into water and carbon dioxide finally.
Air Purification
Nanometer TiO2 Photo Catalyst exposed in certain wavelength ultraviolet can drive oxidation-deoxidize reaction to decompose formaldehyde benzene, ammonia, TVOC, sulfur dioxide ,carbon monoxide, nitrogen oxide in air and form into water and carbon dioxide finally. In this way, nanometer titanium dioxide operate to purify air and can kill coliform and flu germina in the air.
Sterilization
After Nanometer TiO2 Photo Catalyst absorb ultraviolet , it decomposes water in air and forms electron and hole . Electron and hole meet air and oxygen to form OH free radicles which can destroy bacterial cell membrane and easily decompose bacteria in air and remove bacteria efficiently . According to antibacterial test, antibacterial capacity against Escherichia coliform in 24hours reaches 99.99%, and yellow staphylococcus 99.77%, pneumonia Klebsiella bacteria 99.96% . Capacity of killing coliform, yellow staphylococcus, green purulence bacteria reaches 99.9%. It can coagulate virus protein and restrain virus activity to cut off virus's spread. Antivirus capacity against SARS reaches 99.7%, rheum virus 93.7%, flu virus 92.6%.
Deodorization
In our life surrounding, there are odor sources like ammonia, sulfured hydrogen, aldehyde , formalin(formaldehyde)and toluol in new building material , organic volatile solvents(TVOC)in paints. TiO2 Photo catalyst exposed in ultraviolet light can fully decompose these odor sources. It has strong decomposing ability and much more oxiditation ability than ozone and anion, has decomposing and sterilizing ability that activated carbon havn't, including removing cigarette odor , washroom odor, garbage odor and animal odor efficiently.
Hydrophilic and Antipollution Ability
When dirt conglutinate on objects treated by TiO2 Photo catalyst, only wash it by water. Because TiO2 has hydrophilic ability and decomposing lipid ability, dirt will drop with water , objects clean will keep clean for a long time.
»Water Purification
TiO2 Photo catalyst not only can decompose organic contamination, bacteria, and partial inorganic contamination in air, but also decompose drop organic contamination in water.
Application of relative products
Residing Environment:Living room, Office building, Meeting room, Pub, Net Bar, Theater, Cinema, Hotel, Gym.
Transport:Car, Train, Subway, Vessel, Lift, etc.
Medical system :Hospital, Clinic, Health Care Department, Epidemic Prevention Station, etc.
Education:Classroom, Dormitory, Training room, Hall, Dining hall, Library, etc.
Industrial apply:As material combined with various products, like building material (pottery, paint, glass), household appliance(air conditioner, fridge, telephone, washing machine, lighting appliance, air cleaning machine), textile material (cotton cloth, fibre), craft work, etc.