Harnessing the Full Spectrum: Improving Visible Light Responsiveness of Anatase TiO2 A1 Anatase Titanium Dioxide (TiO2) A1 is traditionally known for its strong photocatalytic activity under ultraviolet (UV) light. However, enhancing its responsiveness to visible light has been a key focus of recent research, aiming to expand its applications and efficiency in real-world conditions. Visible light constitutes a significant portion of the solar spectrum, and making anatase TiO2 A1 responsive to this range can significantly increase its photocatalytic efficiency. Researchers have been exploring various strategies to shift the absorption spectrum of anatase TiO2 A1 from UV to visible light. One approach is doping with metal and non-metal elements. Elements like nitrogen, carbon, and sulfur can narrow the band gap of TiO2, making it more responsive to visible light. Metal dopants such as iron, copper, and silver can also introduce new energy levels within the band gap, enhanc…