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. 2016 Mar 4;2(3):e1501554. doi: 10.1126/sciadv.1501554

Fig. 3. TEM characterizations of mesoporous aTiO2 hollow spheres.

Fig. 3

(A to C) aTiO2 hollow spheres with identical hollow core size of about 230 nm but varied shell thicknesses: 8 nm (A), 41 nm (B), and 54 nm (C). (D to F) aTiO2 hollow spheres with average diameter (core size) of 300 (270) nm (D), 410 (325) nm (E), and 680 (475) nm (F).