Electrospinning Preparation and Photocatalytic Activity of Porous TiO₂ Nanofibers

Figure 3

SEM image of nanofibers prepared without (a, b) and with carbon nanospheres (c, d); SEM images of nanofibers before (a, c) and after (b, d) calcination.

(a)

(b)

(c)

(d)