Nitrogen-Doped TiO_𝟐 Photocatalyst Prepared by Mechanochemical Method: Doping Mechanisms and Visible Photoactivity of Pollutant Degradation

Figure 8

Photocatalytic degradation of p-nitrophenol (PNP) using NF400, NF500, NF600, and NF700 as catalysts under (a) ultraviolet and (b) sunlight.

(a)

(b)