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논문 기본 정보
- 자료유형
- 동향자료
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 233 - 240 (8page)
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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 Na<sub>2</sub>H<sub>2</sub>EDTA·2H<sub>2</sub>O, NaH<sub>2</sub>PO<sub>4</sub> and CaCl<sub>2</sub> with a Ca/EDTA/PO<sub>4</sub><sup>3−</sup> 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<sup>−2</sup> 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.
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