Effect of Solution pH on Magnetization of Graphene/Cobalt Nanocomposite Synthesized via Electrodeposition/Exfoliation Technique

Recently, magnetic graphene-cobalt nanocomposites are suggested for application in physical/chemical elements because of their controllability via external magnetic field, their electrical conductivity and magnetic properties [1]. One step electrodeposition/exfoliation has found great advantageous to manufacture graphene/metal nanocomposite. The graphene is peeled off from graphite anode and metal electrodeposited within graphene flakes to form a final composite [2]. In this research, by using one step electrochemical deposition/exfoliation technique, the effect of electrolyte pH on magnetic response of graphene/cobalt nanocomposite is studied. Optimum sample are characterized by X-ray diffraction, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, Fourier transform infrared spectroscopy (FTIR) and vibration sample magnetometer (VSM). Optimum Sample contain a composition of graphene flakes and Co crystals. SEM images and EDX spectroscopy show spherical and foliaceous particles that are scattered on foliate surface of extended graphene shell. The saturation magnetization of the graphene/cobalt nanocomposite is obtained to be 119 emu/g. The results of characterization promise that these nanocomposites are able to be used as catalysts or in targeted drug delivery.