4.7 Article

Urea-assisted aqueous exfoliation of graphite for obtaining high-quality graphene

Journal

CHEMICAL COMMUNICATIONS
Volume 51, Issue 22, Pages 4651-4654

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc00059a

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Funding

  1. National Science and Technology Major Project [2011ZX02707]
  2. National Natural Science Foundation of China [11104303]
  3. Chinese Academy of Sciences [KGZD-EW-303, XDA02040000]

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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.

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