Fig. 1. (A) A TEM image showing the morphology of the 0D-GNPs. (B) A TEM image showing the morphology of the heterostructure based on 2D-WS2 and 0D-GNPs, which indicates that the 0D-GNPs aggregate on 2D-WS2 (C) a SEM image showing the morphology of the heterostructure based on 2D-WS2 and 0D-GNPs. The inserted high resolution SEM image indicates that the 0D-GNPs aggregates on 2D-WS2. (D) The XRD spectrum from the heterostructure. (E) The Raman spectrum from the heterostructure. (F) Extinction spectra from the heterostructure, GNPs and WS2. (G) The EDX spectrum from the heterostructure.
