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<p>Nickel-doped zinc oxide nanoparticles have a great potential in addressing the antimicrobial resistance. In the current research, pure ZnO and a series of Ni-doped ZnO (1 to 10% Ni) nanoparticles are fabricated successfully via a solvothermal route. The X-ray diffraction spectra ascertained the hexagonal wurtzite structure with effective incorporation of Ni²⁺ evidenced through lattice parameter shifts and microstrain variations. The FT-IR spectra showed maintained Zn-O bonding and decreased surface hydroxyl groups on Ni doping. The SEM and TEM images revealed evolution in morphology from rod-shaped ZnO to spherical nanoparticles of Ni-doped ZnO. The UV-Vis spectroscopy exhibited the increasing absorbance and decreasing bandgap from 3.05&#xa0;eV (for pure ZnO) to 2.95&#xa0;eV (for 10% Ni-doped ZnO). The XPS established the presence of Zn²⁺, Ni²⁺ and oxygen without secondary phases. The antimicrobial screening of the materials unveiled good activity against <i>Staphylococcus aureus</i> and moderate against the <i>Candida albicans</i>, with no action on <i>Escherichia coli</i> bacteria. These findings validate ZnO-based nanoparticles as viable agents for biomedical and pharmaceutical applications.</p> Graphical Abstract <p></p>

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Investigations on structural, textural, optical and antimicrobial properties of solvothermally tailored Ni-doped ZnO nanoparticles

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月27日

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  • Amol Warangule,
  • Tanmay Jagtap,
  • Milind Babar,
  • Satish Pardeshi,
  • Rohidas Jagtap,
  • Shobha Waghmode

摘要

Nickel-doped zinc oxide nanoparticles have a great potential in addressing the antimicrobial resistance. In the current research, pure ZnO and a series of Ni-doped ZnO (1 to 10% Ni) nanoparticles are fabricated successfully via a solvothermal route. The X-ray diffraction spectra ascertained the hexagonal wurtzite structure with effective incorporation of Ni²⁺ evidenced through lattice parameter shifts and microstrain variations. The FT-IR spectra showed maintained Zn-O bonding and decreased surface hydroxyl groups on Ni doping. The SEM and TEM images revealed evolution in morphology from rod-shaped ZnO to spherical nanoparticles of Ni-doped ZnO. The UV-Vis spectroscopy exhibited the increasing absorbance and decreasing bandgap from 3.05 eV (for pure ZnO) to 2.95 eV (for 10% Ni-doped ZnO). The XPS established the presence of Zn²⁺, Ni²⁺ and oxygen without secondary phases. The antimicrobial screening of the materials unveiled good activity against Staphylococcus aureus and moderate against the Candida albicans, with no action on Escherichia coli bacteria. These findings validate ZnO-based nanoparticles as viable agents for biomedical and pharmaceutical applications.

Graphical Abstract