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<p>There is a growing need to develop an alternative environmentally friendly approach for synthesizing metal nanoparticles (NPs) due to increasing concerns about the energy crisis and challenges of conventional chemical and physical methods. A biogenic co-precipitation method was employed to synthesize tin oxide (SnO<sub>2</sub>) NPs using <i>Albizia saman</i> leaf extract. The synthesized SnO<sub>2</sub> NPs were characterized using various analytical techniques. The presence of a tetragonal anatase phase and a crystalline size of 25&#xa0;nm were confirmed by X-ray diffraction. Fourier transform infrared (FT/IR) spectroscopy identified functional groups potentially involved in the reduction and stabilization of SnO<sub>2</sub> NPs. The optical properties, examined by UV–Vis diffuse reflectance spectroscopy (UV-DRS), revealed a bandgap of 2.74&#xa0;eV. The rod-like morphology of SnO<sub>2</sub> NPs was identified using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), while energy-dispersive X-ray spectroscopy (EDS) verified the elemental composition. Notably, the SnO<sub>2</sub> NPs exhibited significant photocatalytic activity, achieving over 90% degradation of Rhodamine B (RhB) dye under visible light irradiation. Additionally, the SnO<sub>2</sub> NPs demonstrated intense antibacterial activity by effectively inhibiting the growth of <i>Escherichia coli</i> (<i>E. coli</i>) and <i>Bacillus subtilis</i> (<i>B. subtilis</i>). These findings suggest that SnO<sub>2</sub> NPs synthesized via a green approach hold promise as efficient photocatalysts for dye degradation and potential antimicrobial agents against pathogenic bacteria.</p>

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Biogenic Synthesis of SnO2 Nanoparticles Using Albizia saman Leaf Extract for Visible Light-Driven Photocatalytic Dye Degradation and Antibacterial Applications

  • 期刊论文

  • 发表日期：

    2025年4月18日

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  • C. Parvathiraja,
  • K. Paulkumar,
  • Jeetendra Kumar Gupta,
  • Lotfi Mouni,
  • Tahani Mazyad Almutairi,
  • Van-Huy Nguyen

摘要

There is a growing need to develop an alternative environmentally friendly approach for synthesizing metal nanoparticles (NPs) due to increasing concerns about the energy crisis and challenges of conventional chemical and physical methods. A biogenic co-precipitation method was employed to synthesize tin oxide (SnO2) NPs using Albizia saman leaf extract. The synthesized SnO2 NPs were characterized using various analytical techniques. The presence of a tetragonal anatase phase and a crystalline size of 25 nm were confirmed by X-ray diffraction. Fourier transform infrared (FT/IR) spectroscopy identified functional groups potentially involved in the reduction and stabilization of SnO2 NPs. The optical properties, examined by UV–Vis diffuse reflectance spectroscopy (UV-DRS), revealed a bandgap of 2.74 eV. The rod-like morphology of SnO2 NPs was identified using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), while energy-dispersive X-ray spectroscopy (EDS) verified the elemental composition. Notably, the SnO2 NPs exhibited significant photocatalytic activity, achieving over 90% degradation of Rhodamine B (RhB) dye under visible light irradiation. Additionally, the SnO2 NPs demonstrated intense antibacterial activity by effectively inhibiting the growth of Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis). These findings suggest that SnO2 NPs synthesized via a green approach hold promise as efficient photocatalysts for dye degradation and potential antimicrobial agents against pathogenic bacteria.