Figure 2.

a X-ray powder diffraction pattern (A) The starting material composed of Mo6S4I6 nanowires with traces of MoS2 (asterisk) and Mo6S2I8. The two indexed peaks are used for approximation of the unit cell of Mo6S4I6; (B) The final material is composed of pure multiwall MoS2 nanotubes. b Raman spectra: (A) Mo6S2I8 nanowires, (B) Mo6S4I6 nanowires; arrows point traces of MoS2; square dot (see also the inset) shows a position of the characteristic peak at 117 cm-1, (C) MoS2 nanotubes gained by sulfurization of Mo6S4I6 nanowires. c Optical absorption spectra: (A) Mo6S4I6 precursor nanowires; (B) MoS2 nanotubes; (C) MoS2 polycrystalline material (powder). All materials were dispersed in ethanol.

Remskar et al. Nanoscale Res Lett 2011 6:26   doi:10.1007/s11671-010-9765-0