Research Article
Mechanistic Study of Visible-Light-Induced Photodegradation of 4-Chlorophenol by TiO2−xNx with Low Nitrogen Concentration
Figure 4
Unit cells of TiO2 (anatase) (a) and N-doped TiO2 (b). The red, gray, and blue spheres represent the O, Ti, and N ions, respectively.