Enhancement of Photocatalytic Activity on TiO₂-Nitrogen-Doped Carbon Nanotubes Nanocomposites

Figure 2

SEM images of bare CNx (a), TiO₂-CNx composites with different weight ratio of TiO₂ over CNx 5% (b), 10% (c), and 20% (d).

(a)

(b)

(c)

(d)