Research Article

Mechanistic Study of Visible-Light-Induced Photodegradation of 4-Chlorophenol by TiO2−xNx with Low Nitrogen Concentration

Figure 1

XRD patterns of the N-doped TiO2 samples annealed under NH3 flow for different time; (a) 0 min, (b) 5 min, (c) 10 min, (d) 15 min, (e) 20 min, (f) 25 min; the anatase (□) and the rutile (◯).
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