A photocatalytic converter is a device that uses light energy to promote chemical reactions, and its working principle involves photocatalytic materials and photocatalytic processes. Photocatalytic materials are typically semiconductor materials such as titanium dioxide (TiO2) or other photosensitive compounds. When these materials are exposed to light, the excited electrons transition from valence band to conduction band, and positively charged holes are generated. These electrons and holes are constantly migrating through the material and participating in chemical reactions that trigger a series of photocatalytic reactions.
The working principle of a photocatalytic converter can be briefly summarized into the following steps:
Absorption of light energy: The semiconductor material on the surface of the photocatalyst absorbs light energy and excites the internal electron transition, forming electron-hole pairs.
2.Production of active species: Excitation electrons and holes swim across the surface of the catalyst and react with surrounding molecules to form active species such as hydroxyl radicals or oxidants.
3.Reaction catalysis: The active species then participate in various redox reactions or other chemical reactions, such as the decomposition of water, the degradation of organic wastewater, etc.
Photocatalytic converters are widely used in environmental protection, energy production, sewage treatment, air purification and other fields. Here are some of the application areas of photocatalytic converters:
1.Sewage treatment: Photocatalytic technology can be used in wastewater treatment to degrade pollutants in organic wastewater through photocatalytic oxidation to achieve the purpose of purifying water quality.
2.Air purification: Photocatalytic technology can also be used for air purification, such as the use of photocatalytic materials to degrade pollutants such as volatile organic compounds (VOCs) or nitrogen dioxide in the air.
3.Self-cleaning materials: Photocatalytic technology can also be applied to building materials or coatings to prepare self-cleaning surfaces and decompose organic substances attached to the surface through photocatalytic reactions.
4.Hydrogen energy production: Photocatalytic technology can also be used to produce hydrogen from photolysis of water, thereby enabling the production of clean energy.
In general, photocatalytic converters drive catalytic reactions through light energy, which has broad application prospects and environmentally friendly characteristics, and is of great significance to environmental protection and clean energy production.