What is the Importance of Band Gap in Semiconductor Catalysts?
The band gap of a semiconductor is a critical factor determining its suitability for specific catalytic applications. A suitable band gap ensures that the semiconductor can absorb light of the desired wavelength. For example, TiO2 has a band gap of around 3.2 eV, making it effective under UV light. However, for visible-light-driven photocatalysis, materials with narrower band gaps, such as g-C3N4 (graphitic carbon nitride), are often preferred.
