Synthesis of Ag, Cu and Ag-Cu Bimetallic Nanoparticles Using Tulsi Leaf Extract

Abstract

Synthesis of nanoparticles may be broadly categorised into two classes specifically top-down (physical
processes) and bottom-up method (chemical and biological processes).Green synthesis is more useful
since it does not need any special, complex, and multi-step procedures. The polyphenols found in plant
extracts can be used to reduce metal ions to nanoparticles in a single-step. This biosynthesis procedure is
quite rapid, effectively carried out at room temperature and pressure, and easily scaled up. In the present
paper copper, silver and silver/copper bimetallic nanoparticles have been synthesized using Tulasi leaf
extract and different techniques like XRD and UV-Vis were used to characterise the synthesized
nanoparticles. Using Debye Scherrer formula bimetallic nanoparticle size was calculated as 25.3nm.
The UV–Vis spectroscopy results showed Surface Plasmon Resonance peaks at 419nm 585nm and 535nm
for AgNPs,CuNps and Ag-Cu Nps using Tulsi leaf extract.