Abstract
AbstractGreen synthesis is one of the rapid, reliable, and best routes for the synthesis of silver nanoparticles (Ag NPs). The current study revealed that the aqueous leaf extract ofPterocarpus santalinus, which contains steroids, saponins, tannins, phenols, triterpenoids, flavonoids, glycosides, and glycerides, is found to be responsible for bioreduction during the synthesis of spherical Ag nanoparticles. The formed Ag NPs were characterized by ultraviolet-visible (UV-vis), Fourier transform-infrared (FT-IR), X-ray diffraction (XRD), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) analysis. UV-vis spectra of the aqueous medium containing silver nanoparticles showed a surface plasmon resonance peak at 418 nm. FT-IR analysis was performed to analyze the biomolecules responsible for the reduction of Ag NPs. XRD results confirmed the presence of silver nanoparticles with face-centered cubic structure. The EDX analysis showed the completed inorganic composition of the synthesized Ag NPs. AFM analysis exemplified the results of particle sizes (41 nm). The calculated crystallite sizes are in the range of 20 to 50 nm, and the spherical nature of the Ag NPs was ascertained by SEM. The synthesized Ag NPs exhibited good antibacterial potential against gram-positive and gram-negative bacterial strains. The zone of inhibition effect of antibacterial activity depends upon the concentration of Ag NPs.
Highlights
The silver ions can leak into industrial wastewater due to the corrosion of tubes and the inner surfaces of generators
single-walled carbon nanotube (SWCNT)-CONH-(CH2)6NH2 is a good absorbent for silver cations
The SWCNT-CONH-(CH2)6NH2 is produced by the reaction of “NH2(CH2)6NH2” and SWCNT-COOH
Summary
The silver ions can leak into industrial wastewater due to the corrosion of tubes and the inner surfaces of generators. Depending on preparation method and processing conditions, single-wall (SW), double-wall (DW) or multi-wall (MW) CNTs of various lengths, diameters (and, aspect ratio) and chirality can be incorporated. This is while suitable chemical or physical treatments may lead to different surface morphologies, which, in turn, may improve their dispersion and adhesion in the polymeric matrix [9]. CNTs were first introduced by Britto et al [13] for use in electrochemistry due to their small size and conductivity. Gaussian 09 and How to GaussView 5 Programs Version 1. O’Boyle, N.M., Tenderholt, A.L., Langner, K.M.: Cclib: a library for package-independent computational chemistry algorithms.
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