  Hydrogen evolution reaction (HER) has emerged as a promising technique for
the production of clean and sustainable energy. In recent years, researchers
have been exploring various materials for efficient HER activity. In this
study, we report the synthesis of two different materials, namely MOS$_2$ and
MoS$_2$-rGO, through a hydrothermal technique. X-ray diffraction (XRD),
Fourier-transform infrared (FTIR) spectroscopy, and Raman spectroscopy were
used to characterize the materials. XRD analysis revealed the formation of
hexagonal MOS$_2$ with a high degree of crystallinity. FTIR analysis confirmed
the presence of Mo-S bonds, while Raman spectroscopy provided evidence for the
formation of MOS$_2$.To evaluate the HER activity of the materials, linear
sweep voltammetry (LSV) was performed. The results showed that MOS$_2$ and
MOS$_2$-rGO had good HER activity with low onset potentials and high current
densities. The MOS$_2$-rGO material showed improved HER activity compared to
MOS$_2$, indicating the potential of graphene oxide as a co-catalyst to enhance
the performance of MOS$_2$.
