Green Synthesis of Iron Oxide Nanoparticles by RS Lichen Extract and its Application in Removing Heavy Metals of Lead and Cadmium.

The present study was carried out with the aim of green synthesis of iron oxide nanoparticles by a distilled extract of SR (Ramalina sinensis), a local species of Fandoghlu forest in Ardabil. Among effective compounds in the extract of this local plant to remove lead and cadmium toxic metals are carbohydrates and phenolic compounds and the green synthesis of FeO nanoparticles was accomplished in a 1 h period at 70 degrees Celsius, with gradual addition of ammonia to the distiled extract obtained from plant. Synthesized iron oxide nanoparticles have been confirmed by various techniques such as ultra-violet spectrophotometry, XRD, FT-IR, SEM, and EDAX elemental analysis.