Figure 3

FE-SEM micrographs of Al₂O₃ at various magnifications (a) 30.00 KX, (b) 50.00 KX and (c) 100.00 KX. FE-SEM micrographs of Al₂O₃-reduced graphene oxide hybrid at various magnifications (d) 30.00 KX, (e) 50.00 KX and (f) 100.00 KX.