(a)
(b)
(c)
(d)
(e)
(f)
Figure 2: SEM and TEM micrographs of MnO2 nanowires formed at different reaction durations: (a) and (d) 2 hr, (b) and (e) 6 hr, and (c) and (f) 24 hr. Inset in (f) shows a fully formed individual MnO2 nanowire.