Table 1 XRD analysis detail of carbon peak (002) of GSCWCO.

From: Sustainable synthesis of graphene sand composite from waste cooking oil for dye removal

Peak position (2θ, °)

d (Å)

FWHM (β)

Crystallite size (nm)

Graphene layer, n

26.84

3.29

0.23675

34.48

11.48