Carbon spheres prepared via solvent-thermal reaction method and their microstructures after high temperature treatment  

作　　者：尹彩流 文国富 黄启忠 王秀飞 何良明 刘宝容 

机构地区：[1]College of Physics and Electronic Engineering,Guangxi University for Nationalities [2]State Key Laboratory of Powder Metallurgy,Central South University [3]College of Physical Science and Technology,Guangxi University

出　　处：《Journal of Central South University》2010年第5期895-898,共4页中南大学学报（英文版）

基　　金：Project(2006CB600901) supported by the National Basic Research Program of China;Project(0991015) supported by Guangxi Natural Science Foundation,China;Project(200808MS083) supported by Guangxi Education Department Foundation,China

摘　　要：Carbon spheres with size of 50-300 nm were synthesized via a solvent-thermal reaction with calcium carbide and chloroform as reactants in a sealed autoclave.The morphologies and microstructures of carbon spheres before and after high temperature treatment(HTT) were characterized by X-ray diffractometry(XRD) ,scanning electronic microscopy(SEM) ,energy diffraction spectroscopy(EDS) ,and transmission electron microscopy(TEM) .The formation mechanism of carbon spheres was discussed.The results indicate that the carbon spheres convert to hollow polyhedron through HTT.Carbon spheres are composed of entangled and curve graphitic layers with short range order similar to cotton structure,and carbon polyhedron with dimension of 50-250 nm and shell thickness of 15-30 nm.The change of solid spheres to hollow polyhedron with branches gives a new evidence for formation mechanism of hollow carbon spheres.Carbon spheres with size of 50-300 nm were synthesized via a solvent-thermal reaction with calcium carbide and chloroform as reactants in a sealed autoclave. The morphologies and microstructures of carbon spheres before and after high temperature treatment （HTT） were characterized by X-ray diffractometry （XRD）, scanning electronic microscopy （SEM）, energy diffraction spectroscopy （EDS）, and transmission electron microscopy （TEM）. The formation mechanism of carbon spheres was discussed. The results indicate that the carbon spheres convert to hollow polyhedron through HTT. Carbon spheres are composed of entangled and curve graphitic layers with short range order similar to cotton structure, and carbon polyhedron with dimension of 50-250 nm and shell thickness of 15-30 nm. The change of solid spheres to hollow polyhedron with branches gives a new evidence for formation mechanism of hollow carbon spheres.

关 键 词：carbon spheres solvent-thermal method MICROSTRUCTURE high temperature treatment 

分 类 号：O481[理学—固体物理]