Figure 3

Morphology and microstructures of SnO2[O]rTiO2-PGN: (a) and (d) TEM images collected under lower magnification to present the overall structure. The areas in red circles are magnified in (b) and (e), respectively. The lattice spacing values of the number points are shown in the (c) and (f) contrast profiles. (g) SnO2[O]rTiO2-PGN SEM image. (h) EDS mapping data. (i) BET measurement information. Inset, N2 adsorption/desorption profiles.