What are Photocatalysts and Their Environmental Applications?
Photocatalysts are materials that can accelerate chemical reactions upon exposure to light. They have significant environmental applications, such as in the degradation of pollutants in water and air. Titanium dioxide (TiO2) is a widely studied photocatalyst that can break down organic compounds and kill bacteria when exposed to ultraviolet light, making it useful for self-cleaning surfaces and water treatment.