The green synthesis of iron oxide nanoparticles (FeO NP) has been investigated using the extract in absolute ethanolic and alcoholic solvents 96% from the peel of the mango fruit (Mangifera indica), thus evaluating the influence of the type of solvent on the extraction of reducing metabolites. A broad approach to characterization initially controlled by UV-vis spectrophotometry has been directed, the formation mechanism was evaluated by Fourier transform infrared spectroscopy (FTIR), the magnetic properties by characterization by Physical Property Measurement System (PPSM), in addition to a large number of techniques such as X-ray energy dispersive spectroscopy (EDS), X-ray diffraction (DRX), transmission electron microscopy (TEM/STEM), electron energy loss spectroscopy (EELS), and Z potential to confirm the formation of FeO NP. The results suggest better characteristics for FeO NP synthesized using 96% alcoholic solvent extract. The successful synthesis was directly proven in the removal of metals (Cr-VI, Cd, and Pb) as a potential alternative in the remediation of agricultural soils.

Water contamination due to industrial activities ha s become a latent concern due to the environmental risk and the health of people, for this reason there are more proposals for environmental remediation. One of them and the most innovative is the application of nanotechnology which can be developed by various methods. This research seeks to collect and discuss information related to the sustainable method (green synthesis) for the production of iron nanoparticles, its effectiveness to decontaminate industrial waters and what are the variables that enhance its effectiveness, this from the analysis of scientific articles between the years 2015-2020; this analysis was guided by the PRISMA methodology. The identification of literature was carried out through a search in quality databases, considering those articles with less than five years of antiquity in English and Spanish. The results show the evolution of better methodologies for the management of green synthesis processes, in addition to the potential applications of iron nanoparticles in the decontamination of aqueous media.

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