Table 1. Comparative Structural Parameters of GO and rGO Derived from XRD Analysisa.
peak (002) |
peak (100) |
|||||||
---|---|---|---|---|---|---|---|---|
sample | 2θ [deg] | fwhm [deg] | H [nm] | d[nm] | n | 2θ [deg] | fwhm [deg] | D [nm] |
GO | 10.68 | 1.10 | 7.88 | 0.827 | 9–10 | 42.40 | 1.09 | 8.5 |
rGO | 25.12 | 3.14 | 2.82 | 0.354 | 8 | 42.77 | 1.74 | 5.3 |
The angle of the diffraction peak, represented as 2θ [deg], indicates the crystal orientation. The peak width at half its maximum height denoted as fwhm [deg], is related to the size of the crystallites. The height of the (002) peak, labeled H [nm], can suggest the stack’s thickness. The distance between the crystal layers, shown as d [nm], reveals the spacing within the crystal structure. The parameter “n” estimates the number of layers in the material. Finally, D [nm] refers to the size of the coherent crystalline domains.