Characterization and Photocatalytic Activity of TiO₂ Nanotube Films Prepared by Anodization

Figure 5

Front view of SEM images of TNT synthesized at different electrocatalysis time: (a) 1 hr, (b) 2 hr, (c) 4 hr, (d) 6 hr, (e) 8 hr, and (f) 10 hr.

(a)  

(b)

(c)

(d)

(e)

(f)