What Materials Are Commonly Used in Band Gap Engineering for Catalysis?
Titanium dioxide (TiO2) is one of the most studied materials due to its stability and strong oxidative power, but its large band gap (~3.2 eV) limits its activity to UV light. Other materials like zinc oxide (ZnO), cadmium sulfide (CdS), and graphene-based composites are also explored to tune the band gap for broader light absorption.