Synthesis and Characterization of Ni and Zn Doped MoS2 Nanoparticles by Hydrothermal Method for Photocatalyst Dye Degradation

In the field of environmental protection and energy generation, photocatalytic technology contributes wide range of applications such as the degradation of pollutants, water splitting, CO2 fixation/reduction, and organic synthesis.Here, a series of Zn and Ni-doped MoS2 nano-heterostructures were prepared using the hydrothermal method.The crystal structure and phase purity of the as-prepared Zn and Ni-doped MoS2 were confirmed by the powder X-ray diffraction method.The average crystallite size of all the samples was calculated using Scherrer's formula.Further, the surface morphology and elemental composition of stoichiometric compounds were analyzed using FE-SEM equipped with the EDX spectrum.The calculated bandgap of the pure and doped MoS2 varies from 3.5 eV, calculated from the Tauc plot using absorbance spectra of UV-visible data.Moreover, the photo-catalytic activity of Ni and Zn doped MoS2 was studied by the process of degrading MB dye under UV light irradiation.The roles of Zn and Ni doping on the photocatalytic activities of MoS2 hetero-structures were studied in detail and the experimental results will be presented.