Antimicrobial Activity and Photocatalytic Degradation Properties of Zinc Sulfide Nanoparticles Synthesized by Using Plant Extracts

Abstract

Biological synthesis of zinc sulfide (ZnS) nanoparticles (NPs) was prepared by a simple co-precipitation method using methanol plant extracts of Tridax procumbens, Phyllanthusniruri, and Syzygium aromaticum. The as-prepared ZnS NPs was examined by several physiochemical techniques such as X-Ray Powder Diffraction (XRD), Scanning Electron Microscopy (SEM), UV-Visible spectroscopy, Fourier Transform infrared spectroscopy analysis (FTIR). The disk diffusion method was used to screen the antimicrobial activity of Pure and Plant extracts doped ZnS NPs against different gram positive, gram-negative bacteria and fungus culture. From this investigation synthesized ZnS NPs have a potential antimicrobial agent where showed a hot zone of inhibition (ZOI) at different concentration against all tested microorganisms. Biosynthesized ZnS NPs Photocatalytic degradation also evaluated for Methylene Blue Dye (MBD) and Methyl Orange Dye (MOD) degradation in aqueous solution under UV Light irradiation. Due to the smaller particles size, narrowing optical band gap and antimicrobial properties of synthesised ZnS NPs were improve the photocatalytic activity. Here we first time reported Syzygium aromaticum methanol extracts ZnS NPs exhibited excellent efficiency in Methylene Blue Dye (MBD) and Methyl Orange Dye (MOD) degradation with comparing other ZnS NPs.