▎ 摘　　要

In 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 BaFe12O19 is oily gel. It means that the BaFe12O19 oily gel can enter between the layers of expand graphite. When BaFe12O19 oily gel is self combusted to form BaFe12O19 particles, 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. (C) 2017 Elsevier B.V. All rights reserved.