Electrochemically grown superparamagnetic Co-Fe۳O۴ nanoparticles onto functionalized graphene oxide for biomedical aims

Herein, we report the structural, morphological, and chemical properties of the electrochemically   grown Co۲+-doped magnetite (Co-Fe۳O۴) nanoparticles onto functionalized graphene oxide layers (Co۲+-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 ۵ mA cm-۲. The fabricated Co۲+-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-Fe۳O۴ has fine particle morphology with size of ۵-۱۰ 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 Fe۳O۴ 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.

کلیدواژه ها:

Bare Co-Fe۳O۴ ، Co۲+-doping ، Graphene Oxide ، Nanocomposite