Figure 8

Morphology and dispersion stability of the lubricating oils with rGO concentration (a) 0.2 and (b) 1.0 mg.mL−1 analyzed by TEM.
Morphology and dispersion stability of the lubricating oils with rGO concentration (a) 0.2 and (b) 1.0 mg.mL−1 analyzed by TEM.