Photocatalytic Reaction 400W UV LED Lamp

1. Wavelength Choices: 365 nm is the most common wavelength (best for TiO₂), but 375–395 nm can also be used for certain catalyst or penetration needs. With a narrow range (FWHM of 10–20 nm), the right colours are stimulated and very little light is lost.

2. High Power and Output: 400W of power input, with current UVA LEDs often being 30–50% more efficient than wall plugs, providing a strong light flux for bigger reaction amounts.

3. They use a lot less energy and make a lot less heat than other mercury lights that are the same type.

4. Turning lights on and off right away, with a millisecond response and PWM or conventional fade for exact control of reactions and energy saves.

The 400W UV LED lamp is an industrial-grade, high-power light source made for photochemical and photocatalytic reactions. These lights usually work in the UVA range, which includes 365 nm, 375 nm, 385 nm, and 395 nm. They give off the right amount of photon energy to activate common photocatalysts like anatase TiO₂ (bandgap ~3.2 eV).

When the photocatalyst is lit up, it creates pairs of electrons and holes that make highly reactive oxygen species (ROS), such as hydroxyl radicals (•OH) and superoxide radicals (•O₂⁻). These start strong oxidation processes that break down pollutants, kill germs, and make new chemicals.

400W-class UV LED systems are current and efficient alternatives to high-pressure mercury lights that are used in small and large-scale photoreactors. They offer better energy efficiency, exact control, durability, and safety for the environment.