| 초록 |
To control functionality and structural property of graphene oxide (GO), fluorination is conducted on graphene oxide with different fluorine and nitrogen gas ratio at room temperature. X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FT-IR), X-ray diffraction (XRD), and Raman spectroscopy are used to characterize the fluorinated GO. The fluorinated GO shows different functionality and structural property according to the fluorine gas ratio. As fluorine gas ratio increases, the proportion of semi-covalent C-F bond increases. In addition, the d-spacing of fluorinated GO increases to approximately 0.72 nm and its crystallite size decreases considerably to 21.27 nm. The results suggest that fluorination of GO controls the functionality and crystallite size of GO, which can be used in improvement of dispersion. |
