Production and growth mechanisms of BCN nanotubes

被引：19

作者：

Zhang, HR ^{[1
]}

Liang, EJ

Ding, P

Du, ZL

Guo, XY

机构：

[1] Zhengzhou Univ, Sch Phys Sci & Engn, Zhengzhou 450052, Peoples R China

[2] Henan Univ, Henan Prov Key Lab Mat Chem & Phys, Kaifeng 475001, Peoples R China

来源：

ACTA PHYSICA SINICA | 2002年 / 51卷 / 12期

关键词：

BCN nanotube; pyrolysis; transnission electron microscopy; Raman spectroscopy;

D O I：

10.7498/aps.51.2901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Bamboo-shaped BCN nanotubes have been prepared by pyrolysis of ethylene diamine, ferrocene and sodium borohydride over cobalt catalyst in N-2/H-2 atmosphere at 780-970degreesC. The growth mechanisms of the bamboo-shaped nanotubes are discussed based on the transmission electron microscopy(TEM) and Raman spectroscopic observations. A comparision of the structures for C, CNx and BCN nanotubes indicates that a pentagonal structure hybridized with both B and N has lower formation energy than with only N. This is the main reason for the bamboo-shaped morphorlogy. It is shown that BCN nanotubes generated at 860degreesC possess the densest bamboo-shaped structure, best quality and highest yields. Scanning Auger micro-probe analysis indicates that the composite ratio of B:N:C is 1.7:1.5:96.8.

引用

页码：2901 / 2905

页数：5

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