Skip to main content
. 2019 Dec 31;12:14. doi: 10.1007/s40820-019-0351-4

Fig. 2.

Fig. 2

Morphological and structural characterizations for mesoporous Mn2O3. TEM images of mesoporous Mn2O3 synthesized at various concentrations of Mn2+: a MMO-3.2, b MMO-4.9, c MMO-6.1, d MMO-7.3. e HRTEM images and f SAED patterns of MMO-3.2. g TEM and elemental mapping of manganese, oxygen and carbon elements of MMO-3.2. h XRD pattern of MMO with different pore sizes. i FTIR spectrum of MMO-3.2 (line A: Mn2O3 obtained at 350 °C, line B: Mn2+ coordinated with citric acid, line C: citric acid ligand)