Background: Iron Oxide nanoparticles find enormous applications in environmental remediation and catalysis. Synthesis of such nanoparticles through green approach provides huge advantage due to non-toxic nature of ingredients involved.
Method: In the present work, Diospyros lotus fruit extract was used for the synthesis of iron oxide nanoparticles (NPs). The plant biomolecules were extracted employing two different solvents i.e. water and methanol. Effect of both extracts on the reduction of metal salt as well as on the shape and size of the produced NPs was investigated.
Results: UV-Visible spectroscopy confirmed the synthesis of iron oxide NPs, Fourier Transform Infrared (FTIR) spectrum depicted the presence of biomolecules on the surface of NPs as capping agents, X-ray Diffraction (XRD) diffractogram confirmed the crystalline structure of mixed iron oxide NPs and Scanning Electron Microscopy (SEM) images showed NPs are of spherical shape. The as synthesized NPs were exploited to catalyze the degradation of methylene blue dye in Fenton type catalytic reaction. The degradation reaction was monitored using UV-Visible spectroscopy, which indicated that the percent degradation increased from 15 % (without iron oxide NPs) to 91 % in the presence of organic extract prepared iron oxide NPs and 81 % for aqueous extract prepared iron oxide NPs. Effect of the concentration of methylene blue and iron oxide NPs on the degradation process was also investigated.