One‐Step Exfoliation and Fluorination of Boron Nitride Nanosheets and a Study of Their Magnetic Properties

Abstract A novel, simple, and efficient method for the preparation of the fluorinated hexagonal boron nitride nanosheets (F‐BNNSs) and the corresponding magnetic properties is presented. A one‐step route is used to exfoliate and fluorinate the BNNSs by ammonium fluoride (NH 4 F) from hexagonal boron nitride (h‐BN) powder. Through related instrument characterizations and theoretical calculations, we confirm that large‐area and few‐layer F‐BNNSs were successfully produced by this method, which can be attributed to a fluorination‐assisted exfoliation mechanism from the bulk h‐BN in NH 4 F. More intriguingly, we initially verified that the as‐prepared F‐BNNSs exhibit ferromagnetic characteristics, which would have good potential applications in spintronic devices.