▎ 摘　　要

A simple and rapid coagulation method to separate graphene from partially or incompletely reduced graphene oxide is developed in this study. Our isolation technique is not only simple and effective but also can be applied to a quality control in graphene production. Interestingly, the byproduct of our technique is valuable graphene-reinforced PVA hydrogel. (C) 2010 Elsevier Inc. All rights reserved.