Preparation of carbon sphere from corn starch by a simple method

被引：25
作者：
Zhao, Shuo [1 ]
Wang, Chengyang [1 ]
Chen, Mingming [1 ]
Shi, Zhiqiang [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 19期
关键词：
carbon sphere; corn starch; heat treatment; microstructure;
D O I：
10.1016/j.matlet.2008.02.057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Carbon spheres with a regular and perfect shape was successfully synthesized from corn starch by a two stage process: oxidation and carbonization. In this process, oxidation treatment was the main step; the optimal oxidation temperature was 210 degrees C. The resulting products were characterized by using combined techniques including X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The results showed that the products could keep the original shape of corn starch perfectly, and the diameters of carbon spheres ranged from 5 to 25 pm. It showed characteristic structure of non-graphitizing carbons heated at high temperatures. The preparation mechanism has also been discussed. (C) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：3322 / 3324
页数：3
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