Microbial Synthesis of Silver Nanoparticles Using Aspergillus flavus and Their Characterization

Abstract

Silver nanoparticles possess distinct optical properties and found applications in electronics, catalytic, antimicrobial, anticancer, etc. activities. In present work, silver nanoparticles were synthesized using the fungus Aspergillus Flavus and characterized by UV-visible spectroscopy, X-ray diffraction, and SEM to study their nature, structure and size. The UV- visible spectra exhibit the characteristic surface plasmon absorbance at 409 nm, which confirms the formation of silver nanoparticles. XRD peaks are obtained showed that particles are crystalline in nature with face centered geometry. FTIR confirms the presence of proteins in the solution and the potential biomolecule responsible for the reduction of silver ions and capping agent for stability. TEM micrograph showed that the particles were well separated and spherical with the mean size of 7.13 nm.