单分散碳球的制备及其表征  

The Preparation and Characterization of Monodispersed Carbon Spherules

作　　者：曾祥云[1] 杨万里[1] 杨娇[1] 高美珍[1] 

机构地区：[1]兰州大学物理科学与技术学院,磁学与磁性材料教育部重点实验室,兰州730000

出　　处：《材料导报》2014年第2期14-17,共4页Materials Reports

基　　金：国家自然科学基金(NSFC 11034004);磁学与磁性材料教育部重点实验室基金

摘　　要：用溶剂热法合成了直径从500nm到10μm、尺寸均匀的单分散C球。研究了葡萄糖溶液浓度和反应时间对C球直径的影响。分别用SEM、TEM和EDX对C球的形貌和成分进行了表征,用差热法分析了C球的热稳定性。随着葡萄糖浓度的增加和反应时间的延长,C球的直径增加,但是不是无限制的。通过对C球进行表征,提出了C球生成的机理,证明C球是由C纳米颗粒组成的多孔的表面光滑的实心球。Uniform and monodispersed carbon spherules were prepared through solvothermal method.The diameters of the spherules range from 500 nm to 10μm depending on the reaction time and concentration of glucose in the solution.The morphology and composition of the carbon spherules were characterized by SEM,TEM and EDX,the thermogravimetric performance was analysed by TGA.The results show that the dimension of the carbon spherules increases with increasing reaction time and concentration of the glucose.The carbon spherules are porous,smooth and solid,and are composed of nanoparticles.The formation mechanism of the carbon spherules was also proposed.

关 键 词：溶剂热法 C球 模板 多孔 

分 类 号：TQ127.11[化学工程—无机化工]