Study on Raman spectra of multi-walled carbon nanotubes with different parameters

• Published in: Guang pu xue yu guang pu fen xi Vol. 34; no. 4; p. 982
• Main Authors: Wu, Rong-Lin, Shao, Zheng-Zheng, Chang, Sheng-Li, Zhang, Xue-Ao, Li, He-Ping, Li, Xin-Hua
• Format: Journal Article
• Language: Chinese
• Published: China 01.04.2014
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2014)04-0982-04

In order to study the influencing factors on Raman spectroscopy, we research a series of comparative Raman spectroscopy of multi-walled carbon nanotubes (MWCNT) with different tube diameter and length. The results suggest that the G peak and D peak of MWCNT are all red-shifted as compared to that of polycrystalline graphite; In the same conditions, the peak intensity (G peak and D peak) is directly proportional to the diameter of the MWCNT, and inversely proportional to the length of the MWCNT; G peak frequency shift is closely related to the MWCNT diameter and length, which are inversely proportional to the diameter (with identical results of the single-walled carbon nanotube radial breathing modes) and direct proportional to the length. While, the influences of the diameter and length on D peak frequency shift are weak, and future analysis for the reason of this kind of phenomenon is as follows. Subsequently, we investigated the relation between D peak frequency shift and MWCNT aspect ratio, the relationshi