Photocatalyst Filter

Photocatalyst filters have been widely used in air conditioners, air purifiers, automotive purification systems, air purification in factory workshops and other products, with a wide range of applications, as well as receiving favorable comments from the majority of applicators, it is an ideal new type of air purification and filtration products adopted by manufacturers of air purification equipment. But many people will ask what is the principle of photocatalyst filter?

Principle of photocatalytic filters

Photocatalyst filter is a nanoscale powder with a variety of nanoscale light-sensitive semiconductor media to do lattice doping, to ensure that the permeability and contact with the full, and then mixed with the carrier processed, can effectively remove carbon monoxide, nitrogen oxides, hydrocarbons, aldehydes, benzene and other harmful gases in the air and odors, but also to decompose them into harmless CO2 and H2O, and also has a bactericidal function.

Photocatalyst is to use sunlight, fluorescent lamps, ultraviolet light as an energy source, excitation of electrons on the valence band (e-) jumped to the conduction band, the corresponding hole in the valence band (h +), generating a strong oxidation of activated oxygen and hydroxyl radicals, formaldehyde, methylamine, benzene, xylene, TVOC and other harmful organic compounds, pollutants, odors, bacteria, etc. oxidation and decomposition of harmless CO2 and H2O to achieve the purpose of purifying the air, decomposition of harmful organic compounds. air and decompose harmful organic substances.

Ordinary activated carbon and catalyst made of filters rely on the consumption of media to purify the air, no long-lasting; photocatalyst filters using photocatalysts only provide a reaction site, not involved in the chemical reaction itself, so it can be used for a long time. Photocatalyst is internationally recognized as an environmentally friendly product that does not produce secondary pollution.