(Color online) XPS wide scan spectra of (a) pristine MWCNTs, (b) MWCNTs irradiated in air, and (c) MWCNTs irradiated in ECP.
(Color online) An example of XPS C1s peak deconvolution of MWCNTs and the assigned bonds.
(Color online) Raman spectra of MWCNTs before and after γ-ray irradiation, (a) pristine, (b) irradiated in air, and (c) irradiated in ECP. (The curves were shifted vertically for clarity.)
(Color online) An example of deconvolution of Raman spectra for MWCNTs.
(Color online) X-ray diffraction patterns of MWCNTs, (a) pristine, (b) irradiated in air, and (c) irradiated in ECP. (The small illustration is local amplification of (002) peak.)
(Color online) Plots of I D/I G and FWHMG as a function of interlayer spacing d 002 for MWCNTs.
(Color online) The schematic illustration of structural change in MWCNTs.
Atomic concentration measured by XPS experimental data.
XPS analysis results of MWCNTs irradiated in different conditions.
Relative intensity ratio (I D/I G), positon (V), and FWHM of the different bands.
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