Morphologies of nanostructured bismuth sulphide and Mn (II) doped bismuth sulphide nanoparticles: characterization and application

Different morphologies of bismuth sulphide (Bi₂S₃) nanoparticles (NPs) were synthesized at room temperature using wet chemical method. The properties of bismuth sulphide (Bi₂S₃) nanoparticles can be controlled by different amounts of Mn²⁺ dopant. The synthesized nanoparticles were characterized by several techniques, such as high resolution scanning electron microscopy (HR-SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), electron diffraction (ED), and energy dispersive X-ray spectroscopy (EDS). The nanoparticles (Bi₂S₃) were found to have excellent activity for the UV light assisted decolorization of methyl violet dye and also helped to speed up the redox reaction of Fe(CN)63−${\rm{Fe}}\left( {{\rm{CN}}} \right)_6^{3 - }$ and S2O32−${{\rm{S}}_2}{\rm{O}}_3^{2 - }$. The reactions were monitored through UV-Vis spectroscopy.