Colloid &  Nanoscience  Journal

Colloid & Nanoscience Journal

Harnessing Passiflora Caerulea L. as reducing agent for silver nanoparticle synthesis: exploring antimicrobial and catalytic potentials

Document Type : Original Article

Authors
1 Department of Chemistry, University of North Texas, U.S
2 Department of Chemistry, Khor.C., Islamic Azad University, Khorramabad, Iran
3 Department of chemistry, Qom university of technology, Qom, Iran.
Abstract
A major step in the development of nanotechnology is the creation of a reliable and environmentally friendly method for synthesizing nanoparticles. Among inorganic nanoparticles, silver nanoparticles (Ag NPs) have unique properties, making them highly significant. In this study, silver nanoparticles (Ag NPs) were prepared via an inexpensive and eco-friendly approach from silver nitrate salt, with Passiflora caerulea L. plant extract serving as the precursor and reducing agent. Herein, an expeditious, green, facile, and eco-friendly synthesis approach is introduced, and the synthesized nanoparticles’ antibacterial and catalytic activity were investigated. UV-Visible spectroscopy, XRD, SEM, and FT-IR were employed for characterization. The characteristic absorption peaks of Ag NPs appeared in UV-Visible spectroscopy due to the SPR band at 419 nm. The FTIR spectrum of the aqueous extract and nanoparticles indicated the presence of important functional groups such as amines, carbonyl compounds, and phenols, which facilitate capping and bioreduction by the plant extract. SEM images revealed rod-shaped nanoparticles with sizes ranging from 25 to 40 nm, while XRD analysis confirmed Ag presence. Ag NPs antimicrobial activity was examined against Bacillus subtilis, Shigella dysenteriae, and Streptococcus pyogenes using the disk diffusion assay, where inhibition zones were measured to assess effectiveness. The results demonstrated significant antimicrobial activity, confirming the biomedical potential of these nanoparticles. Additionally, these phyto-nanocatalysts efficiently degraded Methylene Blue (MB) within 180 seconds.
Keywords

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Volume 2, Issue 4
Winter 2025
Pages 462-477

  • Receive Date 11 April 2025
  • Revise Date 05 May 2025
  • Accept Date 06 May 2025