Blue to Yellow Photoluminescence Emission and Photocatalytic Activity of Nitrogen Doping in TiO₂ Powders

Figure 7

Photodegradation profiles of the methyl orange solution, using TiO₂ nanoparticles with UVC light (a) and of the methylene blue solution, using TiO₂ nanoparticles with UVC light (b). The numbers indicate the degradation percentage compared to initial concentration used. Methyl orange molecular structure (c) and methylene blue molecular structure (d).

(a)

(b)

(c)

(d)