Research Article

Chemical Structure of TiO2 Nanotube Photocatalysts Promoted by Copper and Iron

Figure 4

Photocatalytic degradation of methylene blue on the (a) nanosize TiO2, (b) TNT, (c) Cu-TNT, and (d) Fe-TNT under sunlight illumination (AM 1.5 G). The inset shows the spectrum of the sunlight source.
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