Solvent-free preparation of hydrophilic fluorinated graphene oxide modified with amino-groups

Fluorinated graphene has attracted a lot of scientific interest due to its excellent properties and novel structure, but its applications are still challenging because of its poor dispersion and severe agglomeration. We propose a solvent-free synthesis of novel modified fluorinated graphene oxide (mFGO) with good water compatibility with. We used graphene oxide (GO) prepared by Hummers method as a precursor. The oxygen-containing functional groups on GO were hydrothermally reacted to convert GO into FGO. Then, the amino functional groups were introduced to the FGO surface by a solvent-free urea modification reaction. This method produced graphene modified with both fluorine and amino groups in high yield. It shows great potential in introducing mFGO as a reactive modifier in waterborne epoxy materials for a variety of industrial applications.