Sustainable Synthesis of Silver Nanoparticles for Environmental Remediation

Strategic Insights -

Researchers at the Manipal Academy of Higher Education have developed an eco-friendly method to synthesize silver nanoparticles using the leaf extract of Cynometra ramiflora as a bio-reducing agent. This breakthrough has promising implications for environmental remediation, as the synthesized nanoparticles demonstrated excellent catalytic potential in degrading methyl orange dye. The study's findings have been published in the journal Discover Applied Sciences.

Key Takeaways:

  • The researchers employed a novel method of synthesizing silver nanoparticles using the leaf extract of Cynometra ramiflora, which served as a bio-reducing agent.
  • The synthesized nanoparticles exhibited a distinct 431 nm surface plasmon resonance signal, confirming their formation.
  • SEM images showed uniformly distributed spherical nanoparticles with smooth surfaces, while EDX analysis confirmed the presence of elemental silver.
  • TEM analysis revealed that most AgNPs were 10-25 nm in size, with a mean size of 18.84 nm.
  • The synthesized AgNPs demonstrated excellent catalytic potential, degrading approximately 95% of methyl orange dye within 15 minutes.
  • The study employed a pseudo-first-order kinetic model to analyze the degradation process, with a kinetic constant of 0.186 min-1.
  • The researchers noted that the synthesized nanoparticles had a high zeta potential (-18.2 mV), indicating good stability.
  • The study's findings have promising implications for the development of environmentally friendly methods for environmental remediation.

Statistics:

  • The synthesized AgNPs had a mean size of 18.84 nm.
  • The d-spacing for the (111) plane of the AgNPs was found to be 0.2287 nm.
  • The AgNPs demonstrated a pseudo-first-order kinetic constant of 0.186 min-1.
  • The synthesized nanoparticles had a high zeta potential of (-18.2 mV).
  • The AgNPs degraded approximately 95% of methyl orange dye within 15 minutes.

Sources:

  • Sustainable synthesis of silver nanoparticles using Cynometra ramiflora leaf extract for methyl orange degradation. Discover Applied Sciences, 2025,7(7):1-12.
  • NewsRx. Researchers at Manipal Academy of Higher Education Release New Study Findings on Sustainability Research (Sustainable synthesis of silver nanoparticles using Cynometra ramiflora leaf extract for methyl orange degradation). Ecology, Environment & Conservation. July 11, 2025; p 1129.