However, peak broadening and shifting can be observed, specifically for MoS2 TAA and MoS2 LC samples. Typically, Raman analysis shows strong relationship between the number of successive layers in the MoS2 crystallites and position of the A1g and E 1 2g modes . Shifts of the peaks are commonly observed when increasing the number of adjacent layers in the crystal unit starting from mono to multilayer (from 385 to 381 cm -1 for E 1 2g and from 403 to 407 cm -1 for A1g) . A1g mode corresponding to out-of-plane S atoms vibrations for MoS2 Overall, TEM investigation reveals that on a nanoscopic level, the crystallite size and shape of MoS2 domains are more comparable, whereas on a macroscopic level observed by SEM, particle size and/or shape showed stronger differences between these samples. Nitrogen sorption is conducted to evaluate the porosity and specific surface area (SSA) of the MoS2 samples. Sorption isotherms of all samples exhibit a type II shape according to IUPAC classification (Fig. ), typically ascribed to nonporous or macroporous samples . For MoS2 TAA, MoS2 LC and MoS2 TU samples, the emergence of H3-type hysteresis loops confirms the presence of aggregated plate-like particles (Fig. ), as already observed in electron micrographs. However, hysteresis loop for MoS2 TU (Fig. ) shows a much steeper desorption branch in comparison to the other two samples, reminiscent of H2(a) loops where the behavior is ascribed to blocked pores and/or narrow pore necks , which could be formed within the micron-sized secondary particles of MoS2 TU. This strongly suggests significantly hindered accessibility of pores within the large particles of TU-derived MoS2, exhibiting a different morphology than MoS2 TAA and MoS2 LC despite similar hydrothermal synthesis parameters and despite similarly small crystalline domain sizes observed from TEM and from broadened XRD peaks. The observations are further reflected in the different specific surface areas derived from BET method (Brunauer-Emmett-Teller, ref. ), ranging from relatively small SSA of 8 and 5 m 2 g -1 for MoS2 Comm and MoS2 TU, to larger SSA of 84 and 34 m 2 g -1 for MoS2 TAA and MoS2 LC, respectively. The results underline the possibility to tune both porosity and SSA of hydrothermally synthesized MoS2 via choice of sulfur precursor, which can have significant implications on the materials' functional properties .