Figure 1

The characterizations and thus speculative structure of the as-synthesized ultrathin MoS₂ nanosheets.

(a) The Mo3d XPS spectrum and S2p XPS spectrum of the as-synthesized MoS₂ nanosheets with Mo3d_3/2 at 232.0 eV, Mo3d_5/2 at 228.8 eV, S2s at 226.0 eV, S2p_1/2 at 163.3 eV and S2p_3/2 at 162.0 eV. (b) The TEM image of the as-synthesized MoS₂ nanosheets and each of these dark lines is a standing part of one MoS₂ layer. (c) The Raman spectrum of the as-synthesized MoS₂ nanosheets with peak at 383.6 ± 0.4 cm⁻¹ and peak at 403.2 ± 0.5 cm⁻¹. (d) The black colored translucent solution with the as-synthesized MoS₂ nanosheets dispersed in cyclohexane. (e) The particle size distribution of the as-synthesized MoS₂ nanosheets. (f) The atomic illustration of the as-synthesized MoS₂ nanosheet.