Abstract

Synthesis and Physicochemical Studies on Morphlinecarbamic Acid Capped Silver Nanoparticles

Author(s): Monika Bharti and Shashi Bala Kalia

systematic and detailed study for antibacterial efficacy of silver nanoparticles (AgNPs) synthesized with a passivating monolayer of morphlinecarbamic acid using a chemical reduction approach is presented here. As synthesized silver nanoparticles were obtained with good yield, monodispersity, high stability and crystallinity. The-se AgNPs were characterized by elemental analysis and energy dispersive analysis of X-rays (EDAX). SEM images of powdered sample revealed spherical shape with particle size 100-200 nm. XRD patterns indicated arrangement of silver nanoparticles with a face centered cubic (fcc) structure. A surface plasmon resonance peak was observed at 430nm. As synthesized silver nanoparticles were tested for antimicrobialactivityagainst differentpathogenic micro-organisms such as Proteus vulgaris(Gram negative), Staphylococcus citrus(Grampositive) and Staphylococcus epidermidis(Grampositive).Silver nanoparticles with ligand metal feed ratio (1×1) showed prominent inhibition in activity towards S. Epidermidis with maximum zone of inhibition value of 14 ± 1.5 mm.Lipase activity of morphlinecarbamic acid capped silver nanoparticles showed reduction from 191.37 -16.74 μmol/ml/min in activity with ligand metal feed ratio (1×1).

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