▎ 摘　　要

It is urgent to improve the quality and reduce the cost of graphene for widespread applications. In this work, a simple and cost-effective vapor-liquid reaction route to produce few-layer graphene was developed for the seawater/oil separation. The method can not only achieve direct synthesis of graphene by blowing CO2 bubbles into magnesium (Mg) melt, but also realize efficient extraction of graphene assisted by molten salt. The defect density and production speed of graphene were controlled by adjusting the size and growth time of the CO2 bubble in molten Mg. In addition, the wrinkled morphology of as-fabricated graphene also formed due to the disordered restacking of curly surface. Seawater pollution caused by oil spills could be absorbed within by the wrinkled graphene. This novel method represents a great opportunity to solve the problem of excessive CO2 emission in a sustainable future. In addition, it could be applied to the industrial production of graphene powder easily and also paves a new path for the synthesis of other nanomaterials. (c) 2022 Published by Elsevier B.V.