Photocatalysis: Principles And: Applications

The most common catalysts are semiconductors, like Titanium Dioxide (TiO2). The process follows three main steps:

Have you ever wondered how some modern skyscrapers keep their glass so clear? "Self-cleaning" glass is coated with a thin layer of TiO2. It uses sunlight to break down dirt and organic grime, which is then easily washed away by rain. 3. Hydrogen Production (Water Splitting) Photocatalysis: principles and applications

This jump creates a negatively charged electron (e-) and leaves behind a positively charged "hole" (h+). The most common catalysts are semiconductors, like Titanium