Synthesis of Graphene with Microwave Irradiation in Liquid Phase
Synthesis of Graphene with Microwave Irradiation in Liquid Phase
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微波辐射液相合成石墨烯
DOI：
10.3724/sp.j.1077.2012.11521
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发表时间：
2012
影响因子：
1.7
通讯作者：
Ling Li-Cheng
中科院分区：
文献类型：
--
作者：
Wang Can;Wang Yan-Li;Zhan Liang;Yang Guang-Zhi;Yang Jun-He;Qiao Wen-Ming;Ling Li-Cheng
以天然鳞片石墨为碳源，采用Hummers法合成了氧化石墨烯，然后在N-甲基-2-吡咯烷酮(NMP)溶剂中微波辐射合成了石墨烯。在微波辐射过程中，NMP溶剂被选择性加热，同时氧化石墨中的含氧基团被分解成CO、CO2和H2O气体，导致氧化石墨的剥离和还原。用X射线衍射仪、扫描电子显微镜、能谱分析、透射电子显微镜、高分辨电子显微镜、SAED、XPS和拉曼光谱对合成的石墨烯进行了表征。结果表明，合成的石墨烯是透明的，大小为几微米，由2-5层高结晶结构的石墨层组成。合成的石墨烯在NMP溶剂中分散均匀。
Graphite oxide was synthesized with Hummers method using natural flake graphite as carbon source, and then graphene was prepared through microwave irradiation in N-methyl-2-pyrrolidinone (NMP) solvent. NMP solvent was heated selectively during the microwave irradiation process, meantime, the oxygen containing groups of graphite oxide were decomposed into CO, CO2 and H2O gases, resulting in the exfoliation and reduction of graphite oxide. XRD, SEM, EDS, TEM, HRTEM, SAED, XPS and Raman were performed to characterize the syn- thesized graphene. The results indicate that the synthesized graphene is transparent with several microns in size, which consists of 2-5 graphitic layers with high crystalline structure. The synthesized graphene can disperse ho- mogenously in the NMP solvent.
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