▎ 摘　　要

A facile and highly efficient microwave-assisted method was used to synthesise water-soluble graphene from graphene oxide involving pre-reduction, grafting and post-reduction. Polyacrylamide (PAM) chains have been rapidly grafted onto the graphene sheets (GS) via free-radical polymerization under sequential microwave irradiations. Grafting of PAM chains on the sides of the GS increased the thickness of the sheets and improved the water-solubility of the GS.