摘要
Graphene sponge(GS) is a porous 3D structure of graphene. Although hydrothermal reduction, chemical vapor deposition, solution reduction and high temperature annealing could be used for the preparation of GS, the size and shape cannot be well controlled. Herein, we reported a facile method to prepare GS under mild condition in a size and shape controllable way. Graphene oxide was lyophilized to form the spongy structure and reduced by steamy hydrazine hydrate to produce GS. The size and shape of GS prepared were nearly identical to that of the container. The reduction degree of GS could be regulated by the reduction temperature and time.
基金
financial support from the China Natural Science Foundation (No. 201307101)
the Science and Technology Department of Sichuan Province (No. 20134FZ0060)
Top-notch Young Talents Program of China
the Project of Postgraduate Degree Construction
Southwest University for Nationalities (No. 2015XWD-S0703)
