文献类型：期刊文献

英文题名：Effect of sulfur on the growth of carbon nanotubes by detonation-assisted chemical vapor deposition

作者：Wang, Can[1];Zhan, Liang[1];Wang, Yan-Li[1];Qiao, Wen-Ming[1];Liang, Xiaoyi[1];Ling, Li-Cheng[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：257

期号：3

起止页码：932

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20103813242962);WOS:【SCI-EXPANDED(收录号:WOS:000281941900048)】；

基金：This work is supported by the National Natural Science Foundation of China (NO. 50730003, 50672025 and 20806024) and the Research Fund of China 863 (No. 2008AA062302) and Shanghai International Cooperation Project (No. 08160704000).

语种：英文

外文关键词：Carbon nanotubes; Sulfur; Dynamic reshaping; Bamboo knots

摘要：Thiophene was introduced as an additive in detonation-assisted chemical vapor deposition to investigate the effect of sulfur on the growth of carbon nanotubes. The results reveal that sulfur promoted the growth of hollow tubes, instead of bamboo-like carbon nanotubes without sulfur addition. Structural characterization of products indicates that the dynamic reshaping of the catalyst assisted bamboo-like carbon nanotube growth and the bamboo knots preferentially nucleated on the Ni-graphite step edges. It is suggested that sulfur suppressed the bamboo knot growth through blocking the step sites. The findings are important for understanding of nanotube growth mechanism and the role of sulfur often involved in catalytic reactions. (C) 2010 Elsevier B.V. All rights reserved.