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<p>II–VI semiconducting nanostructures are engrossed widely for their antibacterial studies against various pathogenic species. Their small size and morphology makes them imperative for their utilization in removal of bacteria. The present study is based on solvothermal synthesis and characterization of pristine and Mn-,&#xa0;Ni &#xa0;Co and &#xa0;Cu-doped zinc sulphide (ZnS) nanoparticles. X-ray diffraction results demonstrated the crystalline structure, and the cauliflower-like morphology is recorded through scanning electron microscopy. The average particle size was found to vary from 4 to 15&#xa0;nm when scanned by high-resolution transmission electron microscopy (HRTEM). On doping with transition metals, the bandgap values were altered, and the emission spectra were shifted to higher wavelength region with diminished intensity. The affected zone of inhibition and minimum inhibitory concentration (MIC) values, calculated against five bacterial species, are found to vary from 25 to 200&#xa0;μg/mL. The copper-doped ZnS sample having the least MIC values shows superior activity followed by Mn-doped ZnS, Ni-doped ZnS, Co-doped ZnS and undoped ZnS. Owing to the improved antibacterial activity, the synthesized nanoparticles can serve as the promising antibacterial agents in the medicinal field or as an antibiotic for other applications in near future.</p> Graphical abstract <p></p>

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Transition metal (Mn-, Ni-, Co- and Cu-) doped ZnS nano-flowers for morphological, structural, optical, elemental and antibacterial studies

  • 期刊论文

  • 发表日期：

    2025年2月27日

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  • Lalita Rani,
  • R. P. Chauhan

摘要

II–VI semiconducting nanostructures are engrossed widely for their antibacterial studies against various pathogenic species. Their small size and morphology makes them imperative for their utilization in removal of bacteria. The present study is based on solvothermal synthesis and characterization of pristine and Mn-, Ni  Co and  Cu-doped zinc sulphide (ZnS) nanoparticles. X-ray diffraction results demonstrated the crystalline structure, and the cauliflower-like morphology is recorded through scanning electron microscopy. The average particle size was found to vary from 4 to 15 nm when scanned by high-resolution transmission electron microscopy (HRTEM). On doping with transition metals, the bandgap values were altered, and the emission spectra were shifted to higher wavelength region with diminished intensity. The affected zone of inhibition and minimum inhibitory concentration (MIC) values, calculated against five bacterial species, are found to vary from 25 to 200 μg/mL. The copper-doped ZnS sample having the least MIC values shows superior activity followed by Mn-doped ZnS, Ni-doped ZnS, Co-doped ZnS and undoped ZnS. Owing to the improved antibacterial activity, the synthesized nanoparticles can serve as the promising antibacterial agents in the medicinal field or as an antibiotic for other applications in near future.

Graphical abstract