Templateless Synthesis and Characterization of Hollow Gadolinium Doped Cerium Oxide Nanofibers by Electrospinning

Figure 3

FESEM images of the GDC20 for (a) as-spun nanofibers and those calcined at (b) 500°C, (c) 700°C, and (d) 800°C for 8 h in air.

(a)

(b)

(c)

(d)