How Do TiO₂ Nanoparticles Function as Photocatalysts?
One of the most notable applications of TiO₂ nanoparticles is in photocatalysis. When exposed to UV light, TiO₂ nanoparticles generate electron-hole pairs. These pairs can initiate redox reactions, breaking down organic pollutants, bacteria, and even viruses. This property is particularly useful for environmental remediation and water purification.