Doped-TiO2: A Review

Titanium dioxide represents an effective photocatalyst for water and air purification and for self-cleaning surfaces. Additionally, it can be used as antibacterial agent because of strong oxidation activity and superhydrophilicity. TiO2 shows relatively high reactivity and chemical stability under ultraviolet light (λ 400 nm) should allow the main part of the solar spectrum, even under poor illumination of interior lighting, to be used. Visible light-activated TiO2 could be prepared by metal-ion implantation, reducing of TiO2, nonmetal doping or sensitizing of TiO2 with dyes. This paper reviews preparation methods of doped-TiO2 with metallic and nonmetallic species, including various types of dopants and…