Figure 3From: Thiol-functionalized magnetite/graphene oxide hybrid as a reusable adsorbent for Hg2+ removalHysteresis loop and extraction of the thiol-functionalized MGO. (a) Hysteresis curve of thiol-functionalized MGO (inset, close view of hysteresis loops) and (b) the water solution dispersed with thiol-functionalized MGO and magnetic separation.Back to article page