Crystalline MoS2 fullerenes and WS2 nanotubes have been synthesized via a straightforward, template- and catalyst-free procedure. The MoS2 fullerenes and WS2 nanotubes were characterized by electron microscopy, X-ray photoelectron spectroscopy, and other techniques. MoS2 fullerenes and WS2 nanotubes have been used as catalysts to study the electrochemical hydrogen evolution reaction in an alkaline medium. MoS2 fullerenes achieved a current density of 500 mA cm–2 at an overpotential of 435 mV vs RHE, whereas WS2 nanotubes reached the same current density at an overpotential of 418 mV vs RHE.
Chithaiah et al. (Sun,) studied this question.