Biogenic Silver Nanoparticles using Marine Seaweed (Ulva lactuca) and Evaluation of its Antibacterial activity

N Sangeetha, K Saravanan

Abstract


The synthesis, characterization and application of biologically synthesized nanomaterials are an important aspect in nanotechnology.In this report we focused on the green synthesis of silver nanoparticles by using marine seaweed Ulvalactuca. The use of Ulvalactuca extract makes a fast and convenient method for the synthesis of silver nanoparticles and can reduce silver ions into silver nanoparticles. Green synthesis of silver nanoparticles (AgNPs) was characterized by UV-visible (UV–vis) spectroscopy, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The UV–visible spectra gave surface plasmon resonance for synthesized silver nanoparticles at 420 nm. The XRD analysis showed that the AgNPs are crystalline in nature and have face-centered cubic geometry. The AgNPs exhibited antibacterial activity against Bacillus sp., E.coliand Pseudomonas sp. This work proved the capability of using biomaterial towards the synthesis of silver nanoparticle, by adopting the principles of green chemistry.

Keywords


Silver nanoparticles, Ulvalactuca, Characterization, Antibacterial activity.

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