Polymerized carbon nitride nanobells
文献类型：期刊论文
| 作者 | Zhang, GY ; Ma, XC ; Zhong, DY ; Wang, EG |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2002 |
| 卷号 | 91期号:11页码:9324 |
| 关键词 | GRAPHITIC CARBON NANOTUBES GROWTH NITROGEN VAPOR MICROSTRUCTURE MICROTUBULES PYROLYSIS MECHANISM |
| ISSN号 | 0021-8979 |
| 通讯作者 | Wang, EG (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Surface Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Well-aligned carbon nitride nanotubes are fabricated by microwave plasma assisted chemical vapor deposition using iron as the catalyst. These nanotubes are linearly polymerized by carbon nitride nanobells with catalyst particles in the root, as revealed by high-resolution transmission electron microscopy. Carbon nitride nanotube film is analyzed by x-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), and Raman spectroscopy. Both XPS and AES reveal a nitrogen content of about 2% in the film. Raman spectroscopy exhibits a good crystallization of these carbon nitride nanotubes. Electron energy loss spectroscopy is used to study the local distribution of nitrogen in a single nanotube, which indicates that nitrogen prefers to locate at curved graphite sheets, at the top of the nanobells, and that incorporation of nitrogen results in the decrease of the crystallization. Based on these results, a growth model is proposed to explain this periodically stacked nanobell structure. In this model, we propose that graphite sheets only precipitate along the surface of catalyst particles and that lower growth rate at the top curve surface of the bell-like catalyst particle is the key factor influencing formation of this special microstructure. A heterojunction between a tubular carbon nanotube and a carbon nitride nanobell also has been fabricated by a two-step growth technique. And short carbon nitride nanotubes with a few nanobells or even just one nanobell are obtained by both physical and chemical methods. Furthermore, we studied the field emission properties and have obtained a threshold field of as low as about 1 V/mum. A novel side-emission mechanism has been proposed based on the special polymerized nanobell structures. (C) 2002 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51142]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, GY,Ma, XC,Zhong, DY,et al. Polymerized carbon nitride nanobells[J]. JOURNAL OF APPLIED PHYSICS,2002,91(11):9324. |
| APA | Zhang, GY,Ma, XC,Zhong, DY,&Wang, EG.(2002).Polymerized carbon nitride nanobells.JOURNAL OF APPLIED PHYSICS,91(11),9324. |
| MLA | Zhang, GY,et al."Polymerized carbon nitride nanobells".JOURNAL OF APPLIED PHYSICS 91.11(2002):9324. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。