electrochemically grown superparamagnetic co-fe3o4 nanoparticles onto functionalized graphene oxide for biomedical aims

Herein, we report the structural, morphological, and chemical properties of the electrochemically   grown co2+-doped magnetite (co-fe3o4) nanoparticles onto functionalized graphene oxide layers (co2+-doped iron oxide@f-go composite). the deposition process is done at the galvanostatic mode in the two-electrode system by applying the constant current density of 5 ma cm-2. the fabricated co2+-doped iron oxide@f-go composite is characterized via scanning electron microscopy, energy dispersive x-ray analysis, fourier transform infrared spectroscopy (ftir), transmission electron microscopy (tem), and x-ray diffraction analysis. tem observation revealed that co-fe3o4 has fine particle morphology with size of 5-10 nm. the ftir data proved the graphene-based chemical nature of the fabricated composite. the superparamagnetic nature of the prepared composite is proved by vibrating sample magnetometer tests, which verified that the prepared metal-cation doped fe3o4 nanoparticles grown onto functionalized go layers could be an interesting candidate for further manipulations for biomedical aims such as drug delivery, magnetic resonance imaging, and hyperthermia.