▎ 摘　　要

With its unique physical properties, graphene creates an exceptional platform for fundamental science and a promising material for many applications. However, the large-scale production of graphene with high quality and few layers is still challenging. To understanding the preparation methods of the graphene and the influence of their process parameters on the electronic structure is not only crucial for developing its applications in research fields, but also vital for the future graphene industrial production. This work is an overview of the most state-of-the-art research approaches and latest advancement described in the literature for synthesizing graphene and their associated properties.