208230.fig.002a
(a)
208230.fig.002b
(b)
208230.fig.002c
(c)
208230.fig.002d
(d)
208230.fig.002e
(e)
208230.fig.002f
(f)
Figure 2: SEM images of the as-synthesized ZnO samples in 30 mL solutions containing (a) 1 (0.05 g), (b) 2 (0.10 g), (c) 4 (0.20 g), (d) 6 (0.30 g), (e) 8 (0.40 g), and (f) 10 times (0.50 g) of KOH.