超临界CO_(2)剥离法制备石墨烯的研究进展

Research progress in preparation of graphene by supercritical CO_(2) exfoliation

石墨烯因其独特的结构和优异的性能受到人们广泛的关注。石墨烯已经实现规模化生产,但截至到目前,石墨烯仍未出现大规模的应用,这主要因为规模化生产的石墨烯性能以及石墨烯成本难以满足应用的需要。因此,现在仍需要开发绿色、低成本、高质量的石墨烯制备技术。超临界CO_(2)作为最容易实现的超临界流体,在石墨烯制备上展现出制备的产品质量高、制备时间短、环境友好、低成本、适合大规模生产等优点。本综述总结了近几年来通过超临界CO_(2)剥离法制备石墨烯的主要工艺及其对应的产品质量,并为今后大规模制备石墨烯的研究进行了展望。

Graphene has attracted extensive attention due to its unique structure and excellent properties.Graphene has achieved industrialization;however,it has not yet gained large-scale applications by now.This may be due to the fact that the properties and cost of the graphene obtained from large-scale production are difficult to meet a requirement of the practical applications.The development of green,low-cost,and high-quality graphene is still necessary.As the most easily achievable supercritical fluid,supercritical CO_(2),exhibits a number of advantages for the preparation of graphene,such as high product quality,short preparation time,environmental friendliness,low cost,and suitability for large-scale production.This review summarized the main research processes in the preparation of graphene through supercritical CO_(2) exfoliation in recent years and introduced the corresponding product quality of the resultant graphene.The prospects for future research in the large-scale preparation of graphene were also discussed.