Titanium dioxide
CAS number: 13463-67-7
Titanium dioxide (TiO2) is considered as an inert and safe material and has used in many applications for decades.
Related images
(a) Total and projected densities of states (DOS) of the anatase TiO2 structure and (b) molecular orbital bonding structure for anatase TiO2. Copyright 2004 The American Physical Society.
Three schemes of the band gap modifications of TiO2 match the solar spectrum: (a) a higher shift in valence band maximum (VBM); (b) a lower shift in conduction band minimum (CBM); and (c) continuous modification of both VBM and CBM.
TiO2 nanoparticles with different doping elements.
Related Questions and Answers
Q: Why is titanium dioxide (TiO2) used in various applications?
A: TiO2 is used in various applications due to its distinctive properties, such as light refraction and UV radiation absorption, as well as its low production cost. It enhances product appearance by making colors bright and opaque (e.g., in candy and toothpaste). Additionally, TiO2 is added to some products to prevent degradation (e.g., pharmaceutical tablets) and to protect consumers' health (e.g., in sunscreen and lip balm).