Study on Raman Spectra of Multi-Walled Carbon Nanotubes with Different Parameters
WU Rong-lin1, 2, SHAO Zheng-zheng2*, CHANG Sheng-li2, ZHANG Xue-ao2, LI He-ping1, LI Xin-hua2
1. School of Chemical and Biological Engineering, Changsha University of Science & Technology, Changsha 414400, China 2. College of Science，National University of Defense Technology, Changsha 414007, China
Abstract：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 relationship between G peak frequency shift and aspect ratio is nearly linear increase. Using the same analysis method, we plotted the different graphs of G peak and D peak intensity vs the aspect ratio of MWCNT, respectively. As the expected, the linear degression relation are existent in the two relationships.
[1] Iijima S. Nature, 1991, 354(7): 56. [2] Li Q, Liu C, Wang Xuesheo, et al. Nanotechnology, 2009, 20: 145702. [3] Qian W Z, Yu J Y, Cheng F E, et al. Chinese Journal of Light Scattering, 2005, 17: 13. [4] Ritter U, Scharff P, Siegmund C, et al. Carbon, 2006, 44: 2694. [5] Suzuki S, Hibino H. Carbon, 2011, 49: 2264. [6] Sharifi T, Nitze F, Barzegar H R, et al. Carbon, 2012, 50: 3535. [7] Kim D Y, Yang C M, Park Y S, et al. Chemical Physics Letters, 2005, 413: 135. [8] Kumar R S, Pravica M G, Cornelius A L, et al. Diamond & Related Materials, 2007, 16: 1250. [9] Ouyanga Y, Conga L M, Chena L, et al. Physica E, 2008, 40: 2386. [10] Hiura H, Ebbesen T W, Tanigaki K. Chemical Physics Letters, 1993, 202: 509. [11] Bacsa W S, Heer W A d, Ugarte1 D, et al. Chemical Physics Letters, 1993, 211: 346. [12] HAN He-xiang, WANG Zhao-ping, LI Guo-hua, et al(韩和相, 汪兆平, 李国华, 等). The Journal of Light Scattering(光散射学报), 1999, 11(3): 187. [13] Martinez M T, Callejas M A, Benito A M, et al. Carbon, 2003, 41: 2247. [14] OUYANG Yu, FANG Yan(欧阳雨, 方 炎). Acta Phycica Sinica(物理学报), 2005, 54(2): 578. [15] WANG Yu-fang, LAN Guo-xiang(王玉芳, 蓝国祥). The Journal of Light Scattering(光散射学报), 1999, 11(1): 36.
