Synthesis and characterization of long strands of nitrogen-doped single-walled carbon nanotubes
Synthesis and characterization of long strands of nitrogen-doped single-walled carbon nanotubes
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DOI：
10.1016/j.cplett.2006.04.074
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发表时间：
2006-06-24
影响因子：
2.8
通讯作者：
Dresselhaus, M. S.
中科院分区：
文献类型：
--
作者：
Villalpando-Paez, F.;Zamudio, A.;Dresselhaus, M. S.
我们描述了氮掺杂的单壁碳纳米管（N-SWNTs）的合成，其聚集成束并形成长链（< 10 cm），通过二茂铁/乙醇/苄胺（FEB）溶液在Ar气氛中在950 ℃下的热分解。溶液中苄胺的量在0重量%至26重量%之间变化。使用拉曼光谱，我们注意到，随着N含量在起始FEB溶液中的增加，大直径管的生长被抑制。我们观察到，股线的相对电导率随着氮浓度的增加而增加。热重分析（TGA）显示了与N位点上的化学反应有关的高掺杂管的新特征。(c)2006 Elsevier B. V.保留所有权利。
We describe the synthesis of N-doped single-walled carbon nanotubes (N-SWNTs), that agglomerate in bundles and form long strands (< 10 cm), via the thermal decomposition of ferrocene/ethanol/benzylamine (FEB) solutions in an Ar atmosphere at 950 degrees C. The amount of benzylamine in the solution was varied from 0% to 26% by weight. Using Raman spectroscopy, we noted that as the N content is increased in the starting FEB solution, the growth of large diameter tubes is inhibited. We observed that the relative electrical conductivity of the strands increases with increasing nitrogen concentration. Thermogravimetric analysis (TGA) showed novel features for highly doped tubes that are related to chemical reactions on N sites. (c) 2006 Elsevier B.V. All rights reserved.