Raman spectroscopy of graphene nanoribbons synthesized by longitudinal unzipping of multiwall carbon nanotubes

2014 ◽  
Vol T162 ◽  
pp. 014023 ◽  
Author(s):  
S Jovanović ◽  
T Da Ross ◽  
A Ostric ◽  
D Tošić ◽  
J Prekodravac ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Graphene Nanoribbons ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon

Width dependent edge distribution of graphene nanoribbons unzipped from multiwall carbon nanotubes

2013 ◽  
Vol 113 (17) ◽  
pp. 174307 ◽  
Author(s):  
Z. F. Zhong ◽  
H. L. Shen ◽  
R. X. Cao ◽  
L. Sun ◽  
K. P. Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Nanoribbons ◽  
Multiwall Carbon Nanotubes ◽  
Edge Distribution ◽  
Multiwall Carbon

A comparison between Raman spectroscopy and surface characterizations of multiwall carbon nanotubes

Carbon ◽  
2006 ◽  
Vol 44 (14) ◽  
pp. 3005-3013 ◽  
Author(s):  
P. Delhaes ◽  
M. Couzi ◽  
M. Trinquecoste ◽  
J. Dentzer ◽  
H. Hamidou ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon

scholarly journals Novel Method of Evaluating the Purity of Multiwall Carbon Nanotubes Using Raman Spectroscopy

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Young Chul Choi ◽  
Kyoung-In Min ◽  
Mun Seok Jeong
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Reference Material ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Excitation Wavelength ◽  
Established Method ◽  
Carbon Particles ◽  
Novel Method ◽  
Multiwall Carbon

We propose the quantitative method of evaluating the purity of multiwall carbon nanotubes (MWCNTs) using Raman spectroscopy. High purity MWCNTs were prepared by chemical vapor deposition (CVD) to be used as a reference material with 100% purity. Since the intensity and wavenumber ofD′′-band located at around 1500 cm−1were found to be independent of the excitation wavelength of a laser, the purity of MWCNTs was measured by comparing the intensity ratio ofD′′-band toG-band (ID′′/IG) of the sample with that of a reference material. The established method was verified by testing the mixture of amorphous carbon particles and reference MWCNTs.

Surface Morphology, Structural, and Bonding Characteristic of Carbon Nanotubes for In Vitro Culture Applications

2013 ◽  
Vol 667 ◽  
pp. 464-467
Author(s):  
I. Nurulhuda ◽  
Mohd Amri Johari ◽  
Mat Zain Mazatulikhma ◽  
Mohamad Rusop
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Multiwall Carbon Nanotubes ◽  
In Vitro Study ◽  
Characterization Methods ◽  
Multiwall Carbon ◽  
Bonding Characteristic ◽  
Scanning Electron

In this paper, carbon nanotubes were characterized by several characterization methods such as FESEM (field emission scanning electron microscopy), Raman spectroscopy and fourier transform infrared (FTIR) spectroscopy. FESEM is used to characterize the morphology of carbon nanotubes, the structural is characterize by raman spectroscopy and bonding characteristic is determine by FTIR. The morphology of CNTs is found to be multiwall carbon nanotubes with diameter around 30-50 nm. D-peak was observed at 1341 Cm-1 and G-peak at 1575 Cm-1 based on raman spectroscopy result. The chemical bonding observed at range 2400 - 400 from FTIR spectra. These CNTs will be used for in vitro study in future.

scholarly journals Comparison of Electronic Structure and Magnetic Properties of Few Layer Graphene and Multiwall Carbon Nanotubes

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Sekhar Chandra Ray
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Multiwall Carbon Nanotubes ◽  
Hysteresis Loops ◽  
Structural Defects ◽  
X Ray ◽  
Layer Graphene ◽  
Few Layer Graphene ◽  
Multiwall Carbon

A comparative study has been made for the non-catalyst based few layer graphene (FLG) and Fe-catalyst based multiwall carbon nanotubes (MWCNTs). Magnetic and electronic properties of FLG and MWCNTs were studied using magnetic M-H hysteresis loops and synchrotron radiation based X-ray absorption fine structure spectroscopy measurements. Structural defects and electronic and bonding properties of FLG/MWCNTs have been studied using Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and ultraviolet photoelectron spectroscopy (UPS). The work functions of FLG and MWCNTs are 4.01 eV and 3.79 eV, respectively, obtained from UPS (He-I) spectra. UPS (He-II) results suggest that the density of states (DOS) of MWCNTs is higher than FLG and is consistent with Raman spectroscopy result that shows the defect of MWCNTs is higher than FLG. The magnetic coercivity (Hc) of the MWCNTs (~750 Oe) is higher than FLG (~85 Oe) which could be used for various technological magnetic applications.

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