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<p>In the present study, an environmentally friendly method was used to synthesize Dy<sup>3+</sup>, Tb<sup>3+</sup>, Dy<sup>3+</sup>/Tb<sup>3+</sup> doped and undoped SnO<sub>2</sub> nanoparticles using <i>Laurus nobilis L.</i> extract as a reducing agent. The X-ray diffractograms confirmed that the detected planes correspond to the tetragonal-rutile phase and the absence of additional phases confirmed that it was obtained in a pure form. PL intensity decreased due to non-radiative transitions caused by increases in thermal energy and vibrational states as the temperature was raised from 10&#xa0;K to room temperature. However, this decrease slowed down after 150&#xa0;K. It is anticipated that these samples, as they approach a thermally stable state, may be considered potential candidates for optoelectronic applications. CIE diagrams of the nanostructures, for undoped SnO₂, the single-doped and co-doped samples shifted toward the white coordinate. Antibacterial tests conducted on synthesized nanoparticles showed that they exhibit good activity against both Gram-negative and Gram-positive bacteria.</p>

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Optical and Antibacterial Performance of Dy³⁺/Tb³⁺ co-doped SnO₂ Nanoparticles Synthesized From the Green Synthesis of Laurus nobilis L. Extract

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月28日

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  • Mustafa Burak Coban,
  • Ozgen Omur Pekel,
  • Remziye Tulek,
  • Ali Teke,
  • Guler Yagiz Erdemir,
  • Orkun Babacan,
  • Fatma Unal,
  • Berna Koçer Kizilduman,
  • Mehmet Dogan

摘要

In the present study, an environmentally friendly method was used to synthesize Dy3+, Tb3+, Dy3+/Tb3+ doped and undoped SnO2 nanoparticles using Laurus nobilis L. extract as a reducing agent. The X-ray diffractograms confirmed that the detected planes correspond to the tetragonal-rutile phase and the absence of additional phases confirmed that it was obtained in a pure form. PL intensity decreased due to non-radiative transitions caused by increases in thermal energy and vibrational states as the temperature was raised from 10 K to room temperature. However, this decrease slowed down after 150 K. It is anticipated that these samples, as they approach a thermally stable state, may be considered potential candidates for optoelectronic applications. CIE diagrams of the nanostructures, for undoped SnO₂, the single-doped and co-doped samples shifted toward the white coordinate. Antibacterial tests conducted on synthesized nanoparticles showed that they exhibit good activity against both Gram-negative and Gram-positive bacteria.