Green Chemical Technology to Synthesis and Characterization of Iron Nanoparticles from Extract of Marigold Flower

Abstract

Green synthesis methods for producing nanoparticles have been explored due to the increasing demand for environmentally friendly and sustainable approaches in nanotechnology. In this work, Tageteserecta (Marigold) flower extract is used to synthesize and characterize iron nanoparticles (FeNPs), It serves as a stabilizing and reducing agent naturally. Traditional chemical methods often involve toxic reagents and energy intensive processes, which pose health and environmental risks. In contrast, the phytochemicals found in Marigold, such as flavonoids, phenols, and terpenoids, allow the reduction of Fe³⁺ ions to Fe⁰ nanoparticles under mild conditions. The synthesis was conducted by reacting an aqueous solution of ferric chloride (FeCl₃) with Marigold extract, optimizing parameters like temperature (60–80°C), time (2–4 hours), pH, and feed ratio (1:1 to 1:3).A number of characterization methods such as UV-Vis spectroscopy (absorption peak around 280–320 nm), FTIR (identifying functional groups responsible for reduction and capping),SEM/Edax (revealing spherical morphology and size) and were used to confirm the formation of FeNPs.The resulting nanoparticles ranged in size and stability from 20 to 50 nm , were impacted by the synthesis circumstances. This green synthesis approach demonstrates an efficient, low-cost, and ecologically benign route for iron nanoparticle manufacturing, contributing to sustainable nanotechnology practices and the valorization of floral biomass waste.