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氧化石墨烯(GO)是石墨烯应用过程中非常重要的前驱体之一,然而源于其热不稳定性且只能分散于高极性溶剂中,限制了它的进一步发展。基于氧化石墨烯的共价功能化技术可以较好地克服以上缺点,对于发展具有阻燃性能的新型复合材料具有重要的理论及实践意义。本文针对GO上不同反应基团,综述了利用共价化学修饰策略制备具有高分散性及热稳定性的功能化石墨烯纳米材料的研究进展。
Graphene oxide (GO) is one of the most important precursors in the application of graphene. However, due to its thermal instability, it can only be dispersed in high-polarity solvents, which limits its further development. The covalent functionalization based on graphene oxide can overcome these shortcomings well and has important theoretical and practical significance for the development of new composite materials with flame retardancy. In this paper, different reactive groups on GO were reviewed in this paper. The progress in the preparation of functionalized graphene nanomaterials with high dispersion and thermal stability by covalent chemical modification strategy was reviewed.