Eco-friendly synthesis of an α-FeO/rGO nanocomposite and its application in high-performance asymmetric supercapacitors.

This work presents an innovative and environmentally friendly biological synthesis approach for producing α-FeO nanoparticles (NPs) and the successful synthesis of α-FeO/reduced graphene oxide (rGO) nanocomposites (NCs). This novel synthesis route utilizes freshly extracted albumin, serving as both a reducing agent and a stabilizing agent, rendering it eco-friendly, cost-effective, and sustainable. A combination of characterization techniques including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and field emission scanning electron microscopy (FE-SEM) was employed to predict and confirm the formation of the as-synthesized α-FeO NPs and α-FeO/rGO NCs.