NiS <sub><i>x</i></sub> /NiO/MoS<sub>2</sub> heterostructure for enhanced hydrogen evolution in acidic media and supercapacitor electrode applications.
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ABSTRACT: This study demonstrates the synthesis and characterization of a NiS x /NiO/MoS2 (x = 1, 2) heterostructure using a hydrothermal method, demonstrating superior performance for the hydrogen evolution reaction (HER) in 1 M H2SO4. X-ray diffraction (XRD) confirmed the presence of cubic NiO, mixed NiS and NiS2 phases, and hexagonal MoS2, while scanning electron microscopy (SEM) revealed an interconnected nanosheet morphology with Ni, S, Mo, and O elements verified by energy-dispersive X-ray (EDX) spectroscopy. Fourier-transform infrared (FTIR) spectroscopy identified Ni-O, Ni-S, and Mo-S bonds, and UV-visible spectroscopy indicated a reduced bandgap of 2.81 eV for the composite. The composite achieved a low overpote
SUBMITTER: Saleem S
PROVIDER: S-EPMC12802422 | biostudies-literature | 2026 Jan
REPOSITORIES: biostudies-literature
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