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<p>In this study, Copper Oxide (CuO) nanoparticles were synthesized via a green, eco-friendly route using charcoal extract as a natural reducing and stabilizing agent The preparation of four samples consisted of one chem CuO sample, which served as the control, and three biosynthesized variants, each of which was made with 10 mL, 20 mL, and 30 mL of charcoal extract, respectively. The synthesis strategy leverages the phytochemical-rich nature of charcoal extract to control the morphology and stability without the use of hazardous chemicals. The structural, morphological, and optical properties of the synthesized CuO nanoparticles were characterized using XRD, FT-IR, UV–Vis spectroscopy, SEM, FT-RAMAN, BET, and PL techniques. The photocatalytic performance of each sample was evaluated by monitoring the degradation of Rhodamine B (RhB) dye under visible light irradiation. Among the samples, the CuO synthesized with 20 mL of charcoal extract exhibited the highest photocatalytic efficiency, attributed to its enhanced surface activity and light absorption characteristics. This work presents a straightforward and sustainable approach for designing effective photocatalysts, providing valuable insights into the role of bio extract volume in optimizing nanoparticle performance for environmental applications.</p>

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Eco-friendly synthesis of CuO nanoparticles using charcoal extract:Sustainable approach and mechanistic study of RhB dye degradation

  • 期刊论文

  • 发表日期：

    2025年12月31日

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  • M. Jothibas,
  • B. Arunkumar,
  • Abishake David Padmarajan,
  • Kartheka Anandan,
  • R. Sweet Stanly,
  • Agalya Mathivanan,
  • R. Piriyadharsini

摘要

In this study, Copper Oxide (CuO) nanoparticles were synthesized via a green, eco-friendly route using charcoal extract as a natural reducing and stabilizing agent The preparation of four samples consisted of one chem CuO sample, which served as the control, and three biosynthesized variants, each of which was made with 10 mL, 20 mL, and 30 mL of charcoal extract, respectively. The synthesis strategy leverages the phytochemical-rich nature of charcoal extract to control the morphology and stability without the use of hazardous chemicals. The structural, morphological, and optical properties of the synthesized CuO nanoparticles were characterized using XRD, FT-IR, UV–Vis spectroscopy, SEM, FT-RAMAN, BET, and PL techniques. The photocatalytic performance of each sample was evaluated by monitoring the degradation of Rhodamine B (RhB) dye under visible light irradiation. Among the samples, the CuO synthesized with 20 mL of charcoal extract exhibited the highest photocatalytic efficiency, attributed to its enhanced surface activity and light absorption characteristics. This work presents a straightforward and sustainable approach for designing effective photocatalysts, providing valuable insights into the role of bio extract volume in optimizing nanoparticle performance for environmental applications.