Does photocatalyst have any function except formaldehyde without light?

Photocatalyst in addition to formaldehyde is really useful. Photocatalyst, or photocatalyst, originated in Japan. When the photocatalyst absorbs ultraviolet and visible light, pollutants in the air are adsorbed on the surface of the photocatalyst, which will be oxidized into carbon dioxide and water to achieve the purpose of purifying the air. Photocatalyst is not only effective for formaldehyde, but also can purify benzene series, total volatile organic compounds and other toxic and harmful gases in the air. It can also decompose toxins released by bacteria or fungi harmlessly, so in addition to formaldehyde photocatalyst is more reliable.