321571.fig.006a
(a)
321571.fig.006b
(b)
321571.fig.006c
(c)
Figure 6: Optical band gap spectrum of CuS nanostructures synthesized at 150°C (a) without CTAB for 5 hrs, (b) with CTAB for 5 hrs, and (c) with CTAB for 24 hrs.