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<p>Titanium dioxide nanoparticles (TiO<sub>2</sub> NPs) were effectively produced in carboxymethyl cellulose (CMC) using pulsed laser ablation. The nanoparticles were then analyzed for their antimicrobial properties. A pulsed Nd:YAG laser beam with certain parameters was directed onto a high-purity titanium metal plate submerged in a CMC solution to create colloidal titanium oxide nanoparticles. The TiO<sub>2</sub> NPs were analyzed using ultraviolet–visible (UV–Vis) spectroscopy, field emission scanning electron microscopy–energy-dispersive spectroscopy (FE-SEM–EDS), and Fourier transform infrared spectroscopy (FTIR) to determine surface morphology, nanoparticle size, crystal structure, and chemical bonding. The findings confirmed that the TiO<sub>2</sub> NPs exhibit a white hue. This nanoparticle has a spherical shape with average diameter of 45&#xa0;nm. The TiO<sub>2</sub> nanoparticles consist of hydroxyl, carboxyl, covalent, and titanium–oxygen bonds, with the titanium–oxygen bond seen at 555&#xa0;cm<sup>−1</sup> in the low wavenumber range. Testing <i>Escherichia coli</i> with increased doses of TiO<sub>2</sub> NPs resulted in a bigger inhibitory zone and a higher likelihood of diminishing bacterial colonies. TiO<sub>2</sub> nanoparticles were effectively produced as antibacterial agents.</p>

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Antibacterial activity of titanium oxide nanoparticles produced in carboxymethyl cellulose by the pulse laser ablation method

  • 期刊论文

  • 发表日期：

    2025年9月2日

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  • Tennia Noor Istiqomah,
  • Wildan Panji Tresna,
  • Nurfina Yudasari,
  • Maria M. Suliyanti,
  • Iis Nurhasanah,
  • Nurhidayatullaili Muhd Julkapli,
  • Ali Khumaeni

摘要

Titanium dioxide nanoparticles (TiO2 NPs) were effectively produced in carboxymethyl cellulose (CMC) using pulsed laser ablation. The nanoparticles were then analyzed for their antimicrobial properties. A pulsed Nd:YAG laser beam with certain parameters was directed onto a high-purity titanium metal plate submerged in a CMC solution to create colloidal titanium oxide nanoparticles. The TiO2 NPs were analyzed using ultraviolet–visible (UV–Vis) spectroscopy, field emission scanning electron microscopy–energy-dispersive spectroscopy (FE-SEM–EDS), and Fourier transform infrared spectroscopy (FTIR) to determine surface morphology, nanoparticle size, crystal structure, and chemical bonding. The findings confirmed that the TiO2 NPs exhibit a white hue. This nanoparticle has a spherical shape with average diameter of 45 nm. The TiO2 nanoparticles consist of hydroxyl, carboxyl, covalent, and titanium–oxygen bonds, with the titanium–oxygen bond seen at 555 cm−1 in the low wavenumber range. Testing Escherichia coli with increased doses of TiO2 NPs resulted in a bigger inhibitory zone and a higher likelihood of diminishing bacterial colonies. TiO2 nanoparticles were effectively produced as antibacterial agents.