標題: | Synthesis of carbon hollow spheres and particles from CCl4 and Mo |
作者: | Chien, Chun-Hsiung Sheng, Pei-Sun Wang, Chia-Hsi Huang, Chi-Hao Lin, Huang-Kai Lee, Chi-Young Chiu, Hsin-Tien 應用化學系 Department of Applied Chemistry |
關鍵字: | powder technology;carbon hollow spheres;electron microscopy |
公開日期: | 31-三月-2008 |
摘要: | Carbon materials with different morphology were prepared by reacting CCl4 and Mo at 873-1173 K. At 873-973 K, hollow spheres (diameter: 1-3 mu m, shell thickness: 50 nm) were obtained. At 1073 K, particles (diameter: 50-100 nm) encapsulated in spherical shells (diameter: 1-5 mu m) were collected. At H 73 K, formation of particles (diameter: 200-300 nm) was observed. Mo acted as a reagent to remove chlorine atoms from the carbon source and a template for the formation of the spherical structures. We propose that reaction temperature and polymerization of chlorinated species formed from the pyrolysis of CCl4 affect the morphology of carbon products greatly. (C) 2007 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.matlet.2007.08.027 http://hdl.handle.net/11536/9548 |
ISSN: | 0167-577X |
DOI: | 10.1016/j.matlet.2007.08.027 |
期刊: | MATERIALS LETTERS |
Volume: | 62 |
Issue: | 8-9 |
起始頁: | 1176 |
結束頁: | 1178 |
顯示於類別: | 期刊論文 |