Fig. 2: Morphological characteristics of 2D monocrystalline oxides.

TEM images, magnified TEM images, HRTEM images and the corresponding SAED patterns, XRD, AFM and corresponding atomic structures of 2D Cr2O3 (a), 2D Mn2O3 (b), 2D Fe2O3 (c), 2D Co3O4 (d), 2D NiO (e), 2D CeO2 (f), 2D WO3 (g), and 2D Bi2O3 (h). The insets showed the corresponding EDS mappings.