Fig. 2

a TEM and b HRTEM images of M-MoS₂ nanosheets. c AFM height image of M-MoS₂ nanosheets. d HAADF-STEM of M-MoS₂ nanosheets and e the atomic-resolution HAADF-STEM of a M-MoS₂ nanosheet. f The crystal structures of 1T-phase and 1T´-phase MoS₂. High-resolution XPS g Mo 3d and h S 2p spectra of M-MoS₂ and S-MoS₂ nanosheets. i UV–Vis-NIR spectra of 35 ppm solution of M-MoS₂ and S-MoS₂ nanosheets