Is direct contact of polllutant and catalyst needed?
or indirect contact just like photocatalyst wrapped inside glass can also create hydroxyl radicals and elimnate pollutants near to its wrapped surface?
Regarding air pollutants, hydroxyl radicals can degrade various organic pollutants present in the air. The primary generation of hydroxyl radicals, however, relies on the presence of water or water vapor in the environment where the photocatalyst operates. Once the hydroxyl radicals are generated, they can react with various pollutants, leading to their degradation. Thus an indirect contact wont create hydroxyl radicals and eliminate pollutants near its wrapped surface
You can further read the following literature to guide you up:
while direct contact between the photocatalyst and the pollutant is not always necessary, the presence of water or oxygen-containing compounds is crucial for the generation of •OH radicals and the subsequent photocatalytic degradation of pollutants in air.
Abdelhak Maghchiche Thanks for the response if so if we make photcoatalyst and sandwithch between two uv transparent glass keep air sealed enclosure will hydroxyl radicals form??
if you were to sandwich a TiO2 photocatalyst between two UV-transparent glass layers in a sealed air enclosure, it is highly likely that hydroxyl radicals and other reactive species would be formed under UV illumination, enabling the photocatalytic degradation of organic contaminants present in the enclosed system.
- Badges
- Science topic
- Similar topics
- Geoscience
- Atmospheric Sciences
- Climate Science
- Climate Change