Fig. 2
The characterization of exfoliated SBS and the solvent effect for exfoliation. a The crystal structure of bulk Sb2S3 with cleavage tendency along b-axis. b High-resolution TEM image of exfoliated Sb2S3 with inset TEM image (b1) and FFT pattern (b2). c Histograms of the thickness distribution of SBS nanosheets prepared with different solvents (mixed ethanol and water (E/W = 2:1), pure ethanol (E), and pure water (W)), and typical AFM images with inset cross-sectional height profiles of SBS nanosheets obtained from SBS/C (E/W = 2:1, c1) and SBS (W, c2). d XRD patterns of exfoliated Sb2S3 with different exfoliation solvents (mixed ethanol and water (E/W = 2:1), pure ethanol (E), and pure water (W)). e Adsorption energy of water and ethanol molecules on Sb2S3 (010) surface. f Relative diffusion energy barrier of water and ethanol molecules diffusing along the [010] direction from the Sb2S3 (010) surface to a position between the second and the third layers of Sb2S3 (110) slab, calculated with DFT and presenting the diffusion transition state, initial state, and final state with the indicated crystal structures. Scale bars: 5 nm (b); 200 nm (b1); 100 nm (c1); 200 nm (c2)
