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. 2016 Aug 11;6:31496. doi: 10.1038/srep31496

Figure 4. SEM images of prepared samples.

Figure 4

(a) Pure SnO2 octahedrons at low and high (inset) magnifications. (b,c) GCNT-SnO2 aerogels with vertically aligned pores at different magnifications, and the inset in (b) shows the optical image of GCNT-SnO2 aerogel. (d) CNTs tightly bonded on the surface of giant graphene sheets. (e) GCNT-SnO2(1) aerogels with low content of SnO2 octahedrons, and the inset confirms the clear octahedron-shaped morphology of SnO2 octahedrons in GCNT-SnO2 aerogel. (f–h) SEM images of GCNT-SnO2(2), GCNT-SnO2(3) and GCNT-SnO2(4) aerogels, respectively. (i) High resolution SEM image of enlarged part of GCNT-SnO2(4) aerogel.