Green Fabrication of Iron oxide nanoparticles utilizing Aspergillus Niger

Abstract

The current study demonstrates the efficacy of Aspergillus niger (A. niger) in the green synthesis of iron oxide nanoparticles (IONPs). A. niger filtrate was employed as a biogenic source for IONP production. Characterization of the synthesized IONPs using ultraviolet -Visible spectroscopy revealed a characteristic absorption peak around 320 nm, confirming nanoparticle formation. Fourier-transform infrared spectroscopy (FTIR) analysis identified the presence of fungal biomolecules, such as proteins and carbohydrates, on the nanoparticle surface, suggesting their role in capping and stabilization. X-Ray diffraction (XRD) analysis confirmed the crystalline nature of the IONPs and indicated the predominant presence of the hematite (α-〖Fe〗_2 O_3) phase. Microscopic examination using scanning electron microscope (SEM) revealed a uniform, quasi-spherical morphology with particle sizes ranging from 36 to 44 nm. These findings highlight the potential of Aspergillus niger as a sustainable source to produce stable and biocompatible of iron oxide nanoparticles, suitable for diverse biotechnological, medical and biomedical applications