SEM images of the products show the formation of larger secondary particles consisting of agglomerates of flake-shaped primary particles, with several microns of secondary particle size for nano-MoS2 (Fig. ) and tens of microns for micro-MoS2 (Fig. ). The differences in primary particle sizes are revealed at higher magnification, with nano-MoS2 exhibiting lateral dimensions of the two-dimensional MoS2 layers in the range of ca. 100 nm as well as a low thickness/number of layers well below 10 nm, as compared to micro-MoS2 with lateral sizes around 500-1000 nm and a larger thickness (Fig. ). The observations from SEM are confirmed by dynamic light scattering (DLS) analysis, which can quantify the size of MoS2 secondary particle agglomerates, revealing that the average size of the nano-MoS2