Pollutant decomposition principle of photocatalyst filter mesh

Photocatalyst filter mesh is an advanced purification device that uses photocatalytic technology to decompose pollutants in air and water. Its core principle relies on the catalytic effect of photocatalyst materials (such as titanium dioxide TiO₂), which can effectively promote chemical reactions under ultraviolet light or visible light of a specific wavelength, decompose organic and inorganic pollutants, and achieve the purpose of purifying the environment.
Types of pollutants and reaction processes
Photocatalyst filter mesh can decompose many types of pollutants, including:
Volatile organic compounds (VOCs):
VOCs are common indoor pollutants that come from building materials, furniture, detergents, etc. Its degradation process usually involves oxidation reactions. For example, substances such as alcohols and aldehydes can be converted into harmless gases under the action of photocatalysts.
Bacteria and viruses:
The active oxygen species of photocatalysts can destroy the cell membranes and genetic materials of bacteria and viruses, thereby achieving a killing effect. This feature makes photocatalysts have important application value in public places and medical environments.
Nitrogen oxides (NOx) and sulfur oxides (SOx): These inorganic pollutants mainly come from industrial emissions and motor vehicles. Photocatalysts can reduce them to harmless nitrogen and sulfates through photocatalytic reactions, reducing the formation of acid rain.