Figure 2.

FESEM images of the secondary growth on TiO2 nanofibers at different reaction time. (a) 10 min, (b) 30 min, (c) 45 min, (d) 1 h, (e) 2 h, and (f) 3 h. Insets show the magnified images of nanostructures.

Sabba et al. Nanoscale Research Letters 2014 9:14   doi:10.1186/1556-276X-9-14
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