以天然鳞片石墨为原料,采用Hummers法先制备出石墨氧化物,再采用微波辐照法在N-甲基吡咯烷酮(NMP)溶剂中合成出石墨烯.微波辐照选择性地加热NMP溶剂,同时石墨氧化物因其含氧官能团分解成CO、CO2、H2O气体面得以剥离和还原.通过XRD、SEM、EDS、TEM、HRTEM、SAED、XPS和Ranan测试手段对所合成的石墨烯进行了表征.结果表明,所合成的石墨烯尺寸为几微米,呈透明绢丝状结构,每个石墨烯片含有2～5层石墨层;所合成的石墨烯可以均匀地分散在NMP溶剂中.
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