聚合物辅助液相剥离制备石墨烯的机理研究进展

Recent progress in mechanism of polymer-assisted liquid exfoliation for the preparation of graphene

液相剥离法因为有望实现高品质石墨烯的宏量制备而备受关注。与纯溶剂剥离和小分子表面活性剂辅助的液相剥离相比,聚合物辅助的液相剥离不仅可以使用低沸点的溶剂,而且所得石墨烯分散液浓度高、稳定性好。对聚合物辅助液相剥离制备石墨烯的机理进行了综述,特别是基于界面相互作用的剥离机理和基于空间排斥作用的稳定机理,并对聚合物辅助液相剥离制备石墨烯的发展进行了展望。

Much attention has been focused on the liquid exfoliation for its promising application in scale-production of high quality graphene.Compared with the pure solvent exfoliation and small surfactant molecule assisted exfoliation,high concentration and more stable graphene dispersions can be produced with polymer-assisted exfoliation in low boiling point solvent.Herein,the mechanism of polymer-assisted liquid exfoliation for the preparation of graphene has been summarized,especially for the exfoliation mechanism based on interfacial interaction and the stability mechanism based on steric repulsive effect.Finally,outlook of the future of polymer-assisted liquid exfoliation for the fabrication of graphene were also provided.