The thermogravimetry (TG) curves (Fig. 2) show that the mass
change of modified and unmodified graphite is obviously different. For
the sample 0#, as temperature increases, 1.11% of mass is lost, which
is probably caused by evaporation of the residual water in the compound.
The mass loss for the modified graphite is much higher. It is
surely that the substances on the surface of graphite make substantial
contributions to the loss.