期刊
APPLIED SURFACE SCIENCE
卷 258, 期 10, 页码 4563-4568出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2012.01.028
关键词
Carbon nanotubes; Chemical vapor deposition; Spray pyrolysis
类别
资金
- Department of National Defense (DND)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair (CRC)
- Canada Foundation for Innovation (CFI)
- Ontario Research Fund (ORF
- Ontario Early Researcher Award (ERA)
- Ontario Graduate Scholarship Program (OGS)
- University of Western Ontario
Vertically aligned nitrogen-doped carbon nanotubes (CNTs) with modulated nitrogen content have been synthesized in a large scale by using spray pyrolysis chemical vapor deposition technique. The effects of nitrogen doping on the growth, structure and electrical performance of carbon nanotubes have been systematically examined. Field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman techniques have been employed to characterize the morphology, composition, and vibrational properties of nanotubes. The results indicate that the nitrogen incorporation significantly influences the growth rate, morphology, size and structure of nanotubes. Electrical measurement investigation of the nanotubes indicates that the change in electrical resistance increases with temperature and pressure as the nitrogen concentration increases inside the tubes. This work presents a versatile, safe, and easy way to scale up route of growing carbon nanotubes with controlled nitrogen content and modulated structure, and may provide an insight in developing various nitrogen-doped carbon-based nanodevices. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据