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<p>This study reports the green synthesis of tin oxide nanoparticles (SnO<sub>2</sub> NPs) and their composite with carbon dots (CDs) using <i>Moringa oleifera</i> leaf extract. This environmentally sustainable method minimizes the need for harmful chemicals and imparts valuable phytochemical properties to nanoparticles. The photocatalytic performance of the SnO<sub>2</sub>/CDs nanocomposite was evaluated for the degradation of organic dyes in aqueous solutions. The scavenging experiments were conducted to elucidate the degradation mechanism further and identify the reactive oxygen species involved. The results showed a significant enhancement in dye degradation efficiency, with a 91.4% degradation rate for crystal violet and nearly complete degradation (99.28%) of the Congo red dye. Additionally, the nanocomposite exhibited promising antibacterial activity, with inhibition zones of 24&#xa0;mm against <i>Staphylococcus</i> aureus and 23&#xa0;mm against <i>Escherichia coli</i>. The antioxidant capacity, measured using the DPPH assay, reached 92.01%, underscoring the composite's potential as an effective antioxidant. These multifunctional properties position the SnO<sub>2</sub>/CDs nanocomposite as a promising candidate for diverse applications, including wastewater treatment, pharmaceuticals, and food preservation, addressing critical challenges in both environmental and health sectors.</p>

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Detoxification of textile industry effluents using SnO2/carbon dots nanocomposites synthesized by green fabrication using Moringa leaves extract

  • 期刊论文

  • 发表日期：

    2025年6月28日

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  • A. Balamurugan,
  • K. C. Suresh,
  • K. S. G. Jagan,
  • G. S. Sivagurunathan,
  • R. Marnadu,
  • T. M. Naren Vidaarth,
  • S. Surendhiran,
  • Y. A. Syed Khadar

摘要

This study reports the green synthesis of tin oxide nanoparticles (SnO2 NPs) and their composite with carbon dots (CDs) using Moringa oleifera leaf extract. This environmentally sustainable method minimizes the need for harmful chemicals and imparts valuable phytochemical properties to nanoparticles. The photocatalytic performance of the SnO2/CDs nanocomposite was evaluated for the degradation of organic dyes in aqueous solutions. The scavenging experiments were conducted to elucidate the degradation mechanism further and identify the reactive oxygen species involved. The results showed a significant enhancement in dye degradation efficiency, with a 91.4% degradation rate for crystal violet and nearly complete degradation (99.28%) of the Congo red dye. Additionally, the nanocomposite exhibited promising antibacterial activity, with inhibition zones of 24 mm against Staphylococcus aureus and 23 mm against Escherichia coli. The antioxidant capacity, measured using the DPPH assay, reached 92.01%, underscoring the composite's potential as an effective antioxidant. These multifunctional properties position the SnO2/CDs nanocomposite as a promising candidate for diverse applications, including wastewater treatment, pharmaceuticals, and food preservation, addressing critical challenges in both environmental and health sectors.