Electrochemical synthesis was employed to prepare a novel hydroxyapatite/graphene (HAP/ Gr) composite powder suitable for medical applications as a hard tissue implant (scaffold). The synthesis was performed in a homogeneous dispersion containing Na2H2EDTA·2H2O, NaH2PO4 and CaCl2 with a Ca/EDTA/PO4 3− concentration ratio of 0.25/0.25/0.15M, along with 0.01 wt% added graphene nanosheets, at a current density of 137 mA cm−2 and pH value of 9.0. The field emission scanning electron microscopy and transmission electron microscopy observations of the composite HAP/Gr powder indicated that nanosized hydroxyapatite particles were uniformly placed in the graphene overlay. Raman spectroscopy, Fourier transform infrared spectroscopy and X-ray diffraction confirmed graphene incorporation in the HAP/Gr powder. The electrochemically prepared HAP/Gr composite powder exhibited slight antibacterial effect against the growth of the bacterial strain Staphylococcus aureus.

• Vesna Mišković-Stanković(Faculty of Technology and Metallurgy, University of Belgrade, Belgrade 11000, Serbia. Department of Mechanical Engineering, Kyung Hee University, Yongin 17104, Korea)
• Sanja Eraković(Faculty of Technology and Metallurgy, University of Belgrade, Belgrade 11000, Serbia)
• Ana Janković(Faculty of Technology and Metallurgy, University of Belgrade, Belgrade 11000, Serbia)
• Maja Vukašinović-Sekulić(Faculty of Technology and Metallurgy, University of Belgrade, Belgrade 11000, Serbia)
• Miodrag Mitrić(Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade 11000, Serbia)
• Young Chan Jung(Korea Railroad Research Institute, Uiwang 16105, Korea)
• Soo Jin Park(Department of Chemistry, Inha University, Incheon 22212, Korea)
• Kyong Yop Rhee(Department of Mechanical Engineering, Kyung Hee University, Yongin 17104, Korea) Corresponding Author