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<p>The study examines the mechanisms of action of antibacterial and optical nickel oxide (NiO), as well as BaO-doped NiO (Ba-NiO), synthesized using the co-precipitation method. Structural analysis shows that adding BaO changes the NiO lattice by adding distortions, raising crystallinity, and lowering defect density. Comparing the shapes of pure NiO nanoparticles shows that they are mostly spherical, while adding BaO makes them a mix of spherical particles and nanorods. Optical investigations highlight a shift in the absorption edge of Ba-NiO toward longer wavelengths, indicating a decrease in bandgap energy. Antibacterial tests show that pure NiO works better because it has more defects, a better shape, and more surface area, all of which make it easier for reactive oxygen species to form and for bacteria to interact with it. Meanwhile, the introduction of BaO enhances the optical attributes of the material but slightly reduces its antibacterial efficiency by lowering the defect density and altering its surface structure. This study provides a foundation for optimizing NiO-based materials for applications in biotechnology and related fields.</p>

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Structural, Optical, and Antibacterial Properties of NiO and BaO doped NiO- Prepared by Co-precipitation Method

  • 期刊论文

  • 发表日期：

    2025年4月4日

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  • Sreenivasa Kumar Godlaveeti,
  • N. Rajesh,
  • Mohamed Ouladsmane,
  • Ahmed M. Aljuwayid,
  • K. Riazunnisa,
  • Shaik Mohammed Azharuddin,
  • Rajababu Chintaparty

摘要

The study examines the mechanisms of action of antibacterial and optical nickel oxide (NiO), as well as BaO-doped NiO (Ba-NiO), synthesized using the co-precipitation method. Structural analysis shows that adding BaO changes the NiO lattice by adding distortions, raising crystallinity, and lowering defect density. Comparing the shapes of pure NiO nanoparticles shows that they are mostly spherical, while adding BaO makes them a mix of spherical particles and nanorods. Optical investigations highlight a shift in the absorption edge of Ba-NiO toward longer wavelengths, indicating a decrease in bandgap energy. Antibacterial tests show that pure NiO works better because it has more defects, a better shape, and more surface area, all of which make it easier for reactive oxygen species to form and for bacteria to interact with it. Meanwhile, the introduction of BaO enhances the optical attributes of the material but slightly reduces its antibacterial efficiency by lowering the defect density and altering its surface structure. This study provides a foundation for optimizing NiO-based materials for applications in biotechnology and related fields.