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<p>The world’s health is seriously threatened by antibiotic resistance, which makes the search. for creative remedies necessary. A promising approach, antimicrobial nanoparticles have special. qualities that allow them to effectively destroy bacteria by generating hydroxyl radicals and. superoxide ions. This study reports the successful synthesis and characterization of bismuth oxide. (Bi<sub>2</sub>O<sub>3</sub>) nanostructures using the straightforward oil bath method without any surfactant. The XRD. analysis verified that the monoclinic phase of Bi<sub>2</sub>O<sub>3</sub> had formed. The morphology of α-Bi<sub>2</sub>O<sub>3</sub>. nanostructure exhibits a 1D nanorod-like morphology. The 1D nanorod-like morphology of α-. Bi<sub>2</sub>O<sub>3</sub> exhibits superior antibacterial efficiency. Based on the SEM results, the α-Bi<sub>2</sub>O<sub>3</sub> nanorods. average particle size was between 0.011&#xa0;μm (11&#xa0;nm). The prepared α-Bi<sub>2</sub>O<sub>3</sub> nanorods band gap. were analyzed by using UV-VIS studies. The prepared α-Bi<sub>2</sub>O<sub>3</sub> nanorods exhibits band gap of 5.34. nm. Crucially, our study used the agar well diffusion method in visible light to show that Bi<sub>2</sub>O<sub>3</sub>. nanoparticles had antimicrobial activity against three-gram negative bacteria (<i>Pseudomonas</i>. <i>aeruginosa</i>,<i> Escherichia coli</i>,<i> and Staphylococcus aureus</i>) at various concentrations comparable. to those of conventional antibiotics at concentrations ranging from 10 to 50&#xa0;mg. The zone of. inhibitions against <i>E coli</i> were 11 ± 1.9 and <i>P. aeruginosa</i> were 11 ± 1.60&#xa0;mm while against <i>S. aureus</i> were 16 ± 1.80. Due to their ability to swiftly penetrate bacterial cells and damage their. membrane, the Bi<sub>2</sub>O<sub>3</sub> NPs demonstrated strong antibacterial action.</p>

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Rapid synthesis of 1D solid phase α-Bi2O3 nanostructures via one-step oil bath route and evaluation of its antibacterial activity in visible light

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • M. Silambarasan,
  • R. Boopathiraja,
  • S. Ramu,
  • G. Srinivasan

摘要

The world’s health is seriously threatened by antibiotic resistance, which makes the search. for creative remedies necessary. A promising approach, antimicrobial nanoparticles have special. qualities that allow them to effectively destroy bacteria by generating hydroxyl radicals and. superoxide ions. This study reports the successful synthesis and characterization of bismuth oxide. (Bi2O3) nanostructures using the straightforward oil bath method without any surfactant. The XRD. analysis verified that the monoclinic phase of Bi2O3 had formed. The morphology of α-Bi2O3. nanostructure exhibits a 1D nanorod-like morphology. The 1D nanorod-like morphology of α-. Bi2O3 exhibits superior antibacterial efficiency. Based on the SEM results, the α-Bi2O3 nanorods. average particle size was between 0.011 μm (11 nm). The prepared α-Bi2O3 nanorods band gap. were analyzed by using UV-VIS studies. The prepared α-Bi2O3 nanorods exhibits band gap of 5.34. nm. Crucially, our study used the agar well diffusion method in visible light to show that Bi2O3. nanoparticles had antimicrobial activity against three-gram negative bacteria (Pseudomonas. aeruginosa, Escherichia coli, and Staphylococcus aureus) at various concentrations comparable. to those of conventional antibiotics at concentrations ranging from 10 to 50 mg. The zone of. inhibitions against E coli were 11 ± 1.9 and P. aeruginosa were 11 ± 1.60 mm while against S. aureus were 16 ± 1.80. Due to their ability to swiftly penetrate bacterial cells and damage their. membrane, the Bi2O3 NPs demonstrated strong antibacterial action.