以石墨为原料,采用Hummers法液相氧化合成了氧化石墨(GO),通过低温真空剥离预还原、磺化反应、葡萄糖二次还原,合成了高质量的磺化石墨烯(S-GNS),有效避免了在此过程中石墨烯大量团聚的现象.采用傅里叶变换红外(FTIR)光谱、X射线光电子能谱(XPS)、热重分析仪(TG)、X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和原子力显微镜(AFM)等分析手段对磺化石墨烯样品进行了表征.实验结果表明:对氨基苯磺酸成功地接枝到了石墨烯上,磺化石墨烯还原彻底,热稳定性能高；石墨烯表面平整,缺陷少；单层磺化石墨烯厚度约为1.2 nm.水溶性、分散性实验结果表明:磺化石墨烯拥有高水溶性和高分散性.BET比表面积及电性能测试表明:磺化石墨烯的比表面积高达806.4 m2/g,薄膜材料的导电率为1150 S/m.
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