Green Synthesis and Characterization of Silver Nanoparticles Using Nyctanthes arbortristis Linn Leaf Extract and Their Anti Bacterial Activity

Green chemistry is the design of chemical products and processes that reduce the generation of hazardous substances. Since the last few years, natural products especially plant extracts have been extensively explored for their potency to synthesize silver nanoparticles (Ag NPs). The current study designed to synthesize Ag NPs adopting a green approach using Nyctanthes arbortristis Linn (N. arbortristis) aqueous leaf extract.
Synthesized Ag NPs were characterized by using UV-visible spectroscopy, scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) and the prepared Ag NPs were also evaluated for the antibacterial activities.
This study portrays a facile synthesis of N. arbortristis leaf extract and were noticed through visual color change to brown color. The achieved results authenticated with UV-Visible spectrum exhibited an absorption band at around 440 nm. The SEM images confirmed that the size of Ag NPs sample was 28-30 nm. FTIR results also confirmed the formation of Ag NPs. The Synthesized Ag NPs have enhanced antibacterial activities against both Bacillus cereus (gram positive) and gram negative bacteria (E.coli, Pseudomonas aeruginosa, Klebsiella sps).
The current study illustrated in a simple one step invention of Ag NPs with better control over the size of the material and the significant antibacterial activity was displayed.