As one of the simple and efficient routes to access two-dimensional materials, liquid exfoliation has received considerable interest in recent years. Here, we reported on high-efficient liquid exfoliation of hexagonal boron nitride nanosheets (BNNSs) using monoethanolamine (MEA) aqueous solution. The resulting BNNSs were evaluated in terms of the yield and structure characterizations. The results show that the MEA solution can exfoliate BNNSs more efficiently than the currently known solvents and a high yield up to 42% is obtained by ultrasonic exfoliation in MEA-30 wt% H2O solution. Finally, the BNNS-filled epoxy resin with enhanced performance was demonstrated.

We report our effort in the development of a new synthetic method for fluoro-functionalized graphene oxide, which was prepared via the Hunsdiecker reaction, and the treatment of carboxylated graphene oxide with selectfluor at 90 °C for 10 h under an atmosphere of nitrogen, using silver nitrate as a catalyst.