CARALLUMA-MEDIATED GREEN SYNTHESIS OF AG–FE “BIMETALLIC NANOPARTICLES” FOR OPTICAL, STRUCTURAL APPLICATIONS

Abstract

The use of plant extract in the green production of “bimetallic nanoparticles” is gaining traction in the scientific community. ‘nanoparticles’ of Ag-Fe were created by employing the extract of the Caralluma lasaintha plant as a bio-reducing and stabilising agent. In order to examine the nanoparticles' structural integrity, we compared the as-prepared (IAF-P) and thermally treated (IAF-T) ‘Ag–Fe’ nanoparticles. ‘nanoparticles’ were stabilised and formed in part by plant biomolecules, as shown by FTIR data that verified the presence of phytochemical functional groups such as hydroxyl, carbonyl, and ‘C-O’ groups. The XRD results showed that both the untreated and thermally treated samples included crystalline nanoparticles, with an average crystallite size of 22 nm and 28 nm, respectively. The wide absorption band in the 300-350 nm range of the UV-visible spectra was observed in the optical response ‘Ag–Fe’ nanoparticle system, which is worth mentioning.SEM micrographs showed porous and agglomerated structures of ‘nanoparticles’ in the raw sample, and the relatively compact granular and rod-like structures of the thermally treated sample because of the enhanced particle growth. The analysis of Dielectric shows a reduction in frequency with regards to dielectric loss and dielectric constant which was similar to the behaviour of Maxwell-Wagner interfacial polarization. Thermal treatment led to better dielectric stability and moderately increased AC conductivity of the thermally treated ‘nanoparticles’ through increased crystallinity and fewer organic residues. Therefore, a green synthesis to catalysis, functional nanomaterials, and nanoelectronics synthesis is the green synthesis of ‘Ag–Fe’ “bimetallic nanoparticles” using Caralluma