| 摘要: |
| 以无硫膨胀石墨为原料，采用化学剥离法制备出氧化石墨烯。利用X射线衍射仪（XRD）分析膨胀石墨、氧化石墨、氧化石墨烯的晶体结构；利用傅里叶变换红外光谱仪（FTIR）研究氧化石墨、氧化石墨烯表面的红外光谱特征。结果表明：对于制备氧化石墨烯，化学剥离这种方法是可行的。另外，FTIR图谱表明，氧化石墨的表面和边缘含有大量的环氧基、羟基等官能团，有利于其在N,N-二甲基甲酰胺溶液中经超声剥离获得质量较好的氧化石墨烯薄片。 |
| 关键词: 氧化石墨烯 化学剥离 纳米结构 |
| 基金项目: |
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| Preparation and Characterization of Graphene Oxide by Chemical Exfoliation |
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Wang Zengkui Zhang Guoxi Liu Yucheng Zhang Jun Zhang Yongtao
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China Space Sanjing Group Jiangbei Mechanical Engineering Co. Ltd., Xiaogan 432000
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| Abstract: |
| Chemical exfoliation is proposed to produce graphene oxide, using sulfur-free expanded graphite. X-ray diffraction was employed to evaluate the structural properties of expanded graphite, expanded graphite oxide, and graphene oxide. The FITR spectroscopy was used to demonstrate infrared spectroscopy characteristics of the surface of expanded graphite oxide and graphene oxide. Results show that chemical exfoliation is feasible for preparing graphene oxide. In addition, the FTIR spectra indicate that large amounts of bear hydroxyl and epoxide functional groups attached onto the surface and the sheet edges of expanded graphite oxide, which were propitious to obtain high-quality graphene oxide sheets using ultrasonic dispersion in N, N-dimethylformamide. |
| Key words: graphene oxide chemical exfoliation nanostructure |
