石墨烯作为一种新型二维碳纳米材料,具有极好的物理性质和极大的应用潜力.如何大规模制备高质量、低成本的石墨烯是石墨烯产业化的关键问题.本文综述了石墨烯的制备方法及其优缺点,详细介绍了超临界流体剥离制备石墨烯的原理、研究现状及表征方法.讨论了超声波和芘基聚合物辅助超临界流体剥离制备石墨烯法的特点.超临界流体剥离制备石墨烯法设备简单、条件易达到、产品质量高,为石墨烯的工业化生产提供了新的思路.
As a new type of two-dimensional carbonaceous material,graphene has excellent physical properties and great application potential.The key problem to realize graphene industrialization is to find a large-scale preparing method of graphene with high quality and low cost.In this paper,the advantages and disadvantages of preparation methods for graphene were first reviewed,and then the mechanism,research status and characterization methods of supercritical fluids exfoliated method were introduced in details.And the features of supercritical fluids exfoliated method with the assistance of ultrasonication and pyrene-polymers were summarized.The advantages of supercritical fluids exfoliated method are simple equipment,processing conditions easy to achieve and products with high quality,and a new way of thinking for the industrial production of graphene is provided.
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