• 文献标题:   Size and shape controllable preparation of graphene sponge by freezing, lyophilizing and reducing in container
  • 文献类型:   Article
  • 作  者:   ZHAO LQ, YU BW, ZHANG XL, WU RH, LIU XY, LIAO R, YANG ST, LUO JB
  • 作者关键词:   graphene sponge, size, shape, reduction, porous material
  • 出版物名称:   SCIENCE CHINATECHNOLOGICAL SCIENCES
  • ISSN:   1674-7321 EI 1869-1900
  • 通讯作者地址:   Southwest Univ Nationalities
  • 被引频次:   3
  • DOI:   10.1007/s11431-016-6040-3
  • 出版年:   2016

▎ 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.