Photo-catalytic equipment

The working principle of the photo-oxygen catalytic waste gas purification equipment: Under the action of visible light from the outside or ultraviolet light inside the equipment, a catalytic oxidation process occurs. The photocatalytic oxidation reaction uses nano-TiO2 (titanium dioxide) and air as catalysts, with light as the energy source, breaking down organic matter into CO2 and H2O. During the photocatalytic oxidation reaction, under the illumination of ultraviolet light at 253.7nm, the nano-TiO2 catalytic plate absorbs light energy and simultaneously generates electron and hole jumps. After the strong combination of electron and hole jumps, electron-hole pairs are produced, which generally react with surface adsorbed H2O and O2 to generate highly reactive hydroxyl radicals (OH-) and superoxide ion radicals (O2-, O-). This process can directly oxidize various harmful gases and other TVOC organic matter in the air into small molecules such as H2O and CO2. Since the oxidizing agents used are H2O and O2 from the air, no secondary pollution is produced.For example, using a 185nm UV light beam to decompose oxygen molecules in the air into free oxygen, also known as reactive oxygen species. Due to the unbalanced positive and negative electrons in free oxygen, it needs to combine with oxygen molecules, thereby producing ozone. UV + O2 + O- + O* (reactive oxygen) → O + O2 + O3 (ozone). As is well known, ozone has a strong oxidizing effect on organic matter, providing immediate purification for industrial waste gases and other small molecules. After treatment by a photo-oxygen catalytic waste gas purification device, organic waste gases can be decomposed into H2O and CO2, with treatment efficiency exceeding 85%.