Facile synthesis of graphene nanosheets via barium ferrite assisted intercalation and secondary expansion of graphite

摘要

Highlights•We proposed a new method to prepare graphene nanosheets (GNs).•This work provides a simple, time-saving and safe method to prepare GNs.•This preparation process has the potential for mass preparation.AbstractIn this work, we proposed a new method to prepare graphene nanosheets. Expand graphite has large sheet spacing and oil absorption, and the self-combustion precursor of BaFe12O19is oily gel. It means that the BaFe12O19oily gel can enter between the layers of expand graphite. When BaFe12O19oily gel is self-combusted to form BaFe12O19particles, it has a significant increase in volume. Expand graphite will occur secondary expansion and be peeled into graphene nanosheets. We characterized it by several ways and this is a time-saving, convenient, and low-cost method.