Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12951-022-01344-6/MediaObjects/12951_2022_1344_Fig2_HTML.png)
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