采用Hummers法液相氧化合成了氧化石墨(GO),通过高真空低温热膨胀法制备得到了高比表面积的石墨烯(GNS)材料.采用X射线衍射(XRD)、傅里叶变换红外(FT-IR)光谱、X射线光电子能谱(XPS)、拉曼光谱(RS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等分析手段对石墨烯样品进行了表征.结果表明,石墨烯还原彻底,呈褶皱的片层状结构,缺陷少；BET测试及氢气高压吸附实验结果表明,通过高真空低温热剥离法制备的石墨烯材料比表面积高达908.3m2/g,并且拥有丰富的孔道结构；在温度为25、40和55C,压力2500kPa条件下,氢气的吸附量分别达到了1.81％、0.995％和0.44％(质量分数),表明了石墨烯在储氢领域拥有着广阔的应用前景.
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