Fabrication of Ternary MoS(2)/CdS/Bi(2)S(3)-Based Nano Composites for Photocatalytic Dye Degradation

The synthesis and design of low-cost visible-light-active catalysts for the photodegradation of organic dyes have been regarded as an efficient way to use solar energy in addressing environmental issues. We report the fabrication of MoS(2)/CdS nanoparticles functionalized with Bi(2)S(3) nanoflakes. The ternary composites of “MoS(2)/CdS/Bi(2)S(3)” were synthesized in situ by a hydrothermal method at different temperatures. The changes in structural, optical, and morphological properties of the synthesized CdS/MoS(2)/Bi(2)S(3) were explored. The effects of Bi(2)S(3) on CdS/MoS(2) were thoroughly studied by performing an X-ray diffractometer (XRD), a scanning electron microscope (SEM), an ultra-violet–visible spectrometer (Uv–vis), and Fourier transform infrared spectroscopic (FT-IR) studies of the nanoparticles. XRD confirms the cubical crystal structure of the nanoparticles. SEM studies possess the modulation in the surface morphology with the tenability in volume ratios of “MoS(2)/CdS/Bi(2)S(3)” composites. It was observed that the bandgaps calculated using absorption measurements could be manipulated from 2.40 eV to 0.97 eV with varying Bi(2)S(3) in the MoS(2)/CdS nanostructures. FT-IR confirmed the synthesis of “MoS(2)/CdS/Bi(2)S(3)” nanoparticles. On allowing the visible light to fall for 120 min, it was observed that “MoS(2)/CdS/Bi(2)S(3)” degrades the methylene blue up to 90%. The calculated results of “MoS(2)/CdS/Bi(2)S(3)” suggest that the synthesized material could be a strong candidate for photodegradation applications. This research work explains the synthesis of MoS(2)/CdS/Bi(2)S(3)-based nanocomposites for the degradation of dye using a photocatalytic process. The final results show that this catalyst effectively degrades the dye.