130716.fig.005a
(a)
130716.fig.005b
(b)
130716.fig.005c
(c)
130716.fig.005d
(d)
Figure 5: SEM micrographs of AAO films (sample A) at various reaction temperatures: (a) 5°C, (b) 15°C, (c) 25°C, and (d) 35°C. Following anodic oxidation, pore-widening treatment was performed in 6 wt% H3PO4 at 30°C.