Visible Light Irradiation-Mediated Drug Elution Activity of Nitrogen-Doped TiO₂ Nanotubes

Figure 1

SEM images of 100 nm TiO₂ nanotubes with (a) 0.05 M, (b) 0.1 M, and (c) 0.2 M of DEA treatment. (d) TEM and (e) high-magnification TEM images of 100 nm TiO₂ nanotubes with 0.1 M DEA treatment.

(a)

(b)

(c)

(d)

(e)