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What is the principle of photocatalyst purification?

2022-03-30 Page view : 103 views

Function of Catalyst


(1) Air Purification Function

The hydroxyl radicals generated by TiO2 will first destroy the energy bonds of organic gas molecules, make the organic gas into a single gas molecule, accelerate the decomposition of organic substances and gases, and oxidize formaldehyde, benzene and other organic substances and nitrogen in the air. It can be oxidized and reduced to harmless substances such as compounds, sulfur oxides and ammonia. It can remove human body odor, animal odor and smoke odor, and purify the air. Photocatalyst titanium oxide can exert excellent properties such as deodorization, antibacterial, and antifouling when exposed to light, especially in solving the deterioration of atmospheric environment, the impact of chemical substances in new building materials and furniture on the indoor environment, and the air pollution caused by automobile exhaust. When it comes to questions, it is welcomed by people.


(2) Deodorizing Function

Titanium dioxide (TiO2) has stronger oxidizing power than ozone (O3) negative ions; stronger adsorption than activated carbon and HEAP, and also has the decomposition effect (decomposing bacteria) that activated carbon and HEAP do not have. According to the tests of authoritative laboratories in European and American countries, compared with each square centimeter of TiO2 and high-efficiency fiber activated carbon, the deodorizing ability of TiO2 is 150 times that of high-efficiency fiber activated carbon, which is equivalent to the deodorization of 500 activated carbon refrigerators. agent.


(3) Hydrophilic and Antifouling Function

Due to the high hydrophilicity of the photocatalyst coating, an anti-fog coating can be formed, and at the same time, due to its strong oxidizing effect, the oil on the surface can be oxidized, so it can be sprayed on the surface of the object to form a self-cleaning coating, so that the object to be coated has a self-cleaning coating. Cleaning function.


(4) Sterilization Function

Destroy the cell membrane with the superoxidative ability of TiO2 to cause the loss of cytoplasm and lead to bacterial death;

  • Coagulates virus protein, inhibits virus activity, and captures and kills planktonic bacteria in the air, its ability is as high as 99.99%;

Can kill Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Aspergillus niger, etc.

  • It can decompose allergens in the air, reduce allergic diseases and asthma, and also decompose bacteria, improve the condition of athlete’s foot, and does not hurt the skin.


(5) Anti-Mildew and Antibacterial Function

Prevent the formation of mold and algae, and prevent the adhesion of scale.


(6) Long-Lasting Effect

This product is an inorganic product, and its substance is not lost during the catalytic process, so as long as the sprayed surface is not damaged, it can function for a long time.

Photocatalysts are widely used in the following places due to their superior characteristics:

Home environment: living room, living room, bathroom, kitchen, furniture, hotel and hotel.

Medical Food: Hospitals. Clinic. Health care centers, food factories, canteens, restaurants.

Transportation: cars, cars, buses, subways, trains, planes, blood collection vehicles, ambulances.


Commercial Places: Shopping Malls, Gyms, Dance Halls, Stations, Cinemas, Hotels and Guesthouses.

Teaching Units: schools, kindergartens, nurseries.

Office Space: office building, office building, business center, conference room.