Figure 2

TEM images of (a) oxidized STNO, (b) reduced STNO, (c) oxidized STNMO, (d) reduced STNMO, (e) oxidized STNCO and (f) reduced STNCO.
TEM images of (a) oxidized STNO, (b) reduced STNO, (c) oxidized STNMO, (d) reduced STNMO, (e) oxidized STNCO and (f) reduced STNCO.