CVD生长多壁碳纳米管的拉曼光谱径向呼吸振动模式观察

Valeriy V. Bolotov; Vasiliy E. Kan; Egor V. Knyazev; Peter M. Korusenko; Sergey N. Nesov; Yuriy A. Sten'kin; Viktor A. Sachkov; Irina V. Ponomareva

doi:10.1016/S1872-5805(15)60197-4

CVD生长多壁碳纳米管的拉曼光谱径向呼吸振动模式观察

doi: 10.1016/S1872-5805(15)60197-4

Omsk Scientific Center of Siberian Branch Russian Academy of Sciences, Karl Marx Avenue, 15, Omsk 644024, Russian Federation

详细信息

中图分类号: TQ127.1⁺1
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出版历程
- 收稿日期: 2015-05-08
- 录用日期: 2015-11-10
- 修回日期: 2015-10-10
- 刊出日期: 2015-10-28

An observation of the radial breathing mode in the Raman spectra of CVD-grown multi-wall carbon nanotubes

Omsk Scientific Center of Siberian Branch Russian Academy of Sciences, Karl Marx Avenue, 15, Omsk 644024, Russian Federation

摘要

摘要: 采用拉曼光谱仪、透射电镜、俄歇能谱仪、X射线光电子能谱仪等研究在SiO₂/Si基底上化学沉积的多壁碳纳米管(MWCNTs)经390℃的空气中热处理120 min前后与HCl溶液化学处理前后的结构变化情况。拉曼光谱集中测试低频(250-300 cm^-1)带。结果表明,经热处理和化学处理后,在250-300 cm^-1形成的拉曼带在峰位和半宽几乎没变。由透射电镜可知,小直径碳纳米管的内径值与拉曼光谱测试结果一致。这些结果表明,低频带产生于小直径碳纳米管的内壁中碳原子的径向呼吸振动。
- 碳纳米管 /
- 径向振动模式 /
- 拉曼 /
- 化学气相沉积 /
- 显微镜
Abstract: MWCNTs grown by chemical vapor deposition on SiO₂/Si substrates were investigated by Raman spectroscopy, transmission electron microscopy (TEM), Auger spectroscopy, and X-ray photoelectron spectroscopy before and after an annealing at 390℃ for 120 min in air or chemical treatment with a HCl solution. The Raman spectroscopy was focused on the low-frequency (250-300 cm^-1) band. It is found that the positions and full widths at half maximum of the peaks forming the 250-300 cm^-1 Raman band change little with the annealing or chemical treatment. The measured inner diameters of small-diameter CNTs from TEM agree well with those from Raman spectroscopy. These indicate that the low-frequency band originates from the radial breathing oscillations of carbon atoms in the inner walls of small-diameter MWCNTs.
- Carbon nanotube /
- Radial breathing mode /
- Raman /
- Chemical vapor deposition /
- Microscopy

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参考文献(20)

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