745746.fig.005a
(a)
745746.fig.005b
(b)
745746.fig.005c
(c)
745746.fig.005d
(d)
Figure 5: (a)~(d) The TEM photographs of Fe3O4 nanowires synthesized under constant NaOH concentration, 15 m, and at various temperatures or reaction durations, (a) 120°C, 3 days, (b) 130°C, 3 days, (c) 140°C, 3 days, and (d) 120°C, 9 days.