Development and Application of Visible Light-Excited Photocatalysts for the Decomposition of Organic Pollutants

Tech & Electronics;

Organic pollutants, especially volatile organic pollutants (VOCs), such as formaldehyde, toluene, benzene, etc., are harmful to the human body, and have the risk of irritating respiratory mucosa, causing teratogenicity and carcinogenicity.

Main technical problems to be solved:

At present, the photocatalytic efficiency of visible light-excited photocatalysts is very low, which is less than 10%; the catalysts are easily poisoned by environmental factors and fail, and the service life is short; and they generally contain heavy metal ions, which poses a health risk to the human body. It is necessary to solve the catalytic efficiency of visible light-excited photocatalysts, improve the service life, and develop heavy metal-free formulations.

Main technical goals:

1. The catalytic efficiency will beincreased from less than 10% at present to more than 50%;
2. The service life willreach more than 24 months, and the catalytic efficiency cannot be decreased by more than 20%;
3. The formula without heavy metal components will bedeveloped.