三维石墨烯的水热法制备及其吸附性能研究

Hydrothermal synthesis of three-dimensional graphene and its adsorption property

系统研究了一种在水热条件下制备三维石墨烯的新方法,建立了最佳的稳定制备工艺。该方法不需要添加化学交联剂,简单、可控性高。经X射线衍射、扫描电镜、视频接触角测量仪,拉曼光谱检测分析表明,制备的三维石墨烯样品具有密度低、孔隙率、机械强度及吸附率高的特点,与其它方法相比,此制备工艺具有较好的稳定性和重复性。制备的三维石墨烯有望应用在超级电容器、储氢材料、催化剂和环境保护等方面。

Three-dimensional graphene （3D） has attracted increasing attention due to its excellent performance such as light weight, high porosity, large specific surface area and high mechanical strength. In this paper, we report a simple and controllable method for the preparation of 3D architectures of graphene by the hydrothermal synthesis at 180℃. There were no chemical crosslinking agents are needed during the synthesis process. The as- prepared 3D graphene were characterized by use of X-ray diffraction, scanning electronic microscope, video con- tact angle measuring instrument and Raman spectroscope. The results show that the 3D graphene architectures have low densities, high porosity, high mechanical properties and high efficient absorption, compared with oth- er methods, this method has shown better stability and reproducibility. The prepared 3D graphene can be expec- ted to be used in the fields of supercapacitors, hydrogen storage, catalysts and environmental protection etc.