▎ 摘　　要

In this study, the water-soluble magnetic-graphene nanocomposites (Fe3O4@GNs-SO3H) were fabricated via a simple and efficient approach. The water-soluble magnetic-graphene nanocomposites were applied as an effective adsorbent for removal of organic dye, malachite green, from aqueous solution. It is noteworthy that the nanocomposites displayed good water-dispersibility, rapid absorption rate, high absorption capacity, and convenient magnetic separation. Furthermore, the novel adsorbent could be recovered and recycled for 15 consecutive trials without significant loss of its activity.