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Urea-assisted aqueous exfoliation of graphite for obtaining high-quality graphene
Peng He1, Chao Zhou, Suyun Tian
1State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China. gqding@mail.sim.ac.cn.
Chemical Communications (Cambridge, England)
|February 19, 2015
Abstract:
Urea-assisted aqueous exfoliation of graphite was found to be more efficient than exfoliation in N,N-dimethylformamide (DMF), and high-quality graphene was obtained with a yield up to 2.4%. The mechanism in which a primary amine facilitates aqueous exfoliation was proposed and experimentally validated, which may inspire new strategies for efficient liquid exfoliation.
