Visible-Light Photocatalytic Activity of N-Doped TiO₂ Nanotube Arrays on Acephate Degradation

Figure 1

SEM top-view images of (a) TiO₂ nanotube arrays annealed at 400°C and N-doped TiO₂ nanotube arrays annealed at various temperatures, (b) 400°C, (c) 500°C, and (d) 600°C.

(a)

(b)

(c)

(d)