Facile Preparation of Porous Inorganic SiO₂ Nanofibrous Membrane by Electrospinning Method

Figure 2

SEM images of the carbon spheres (a), PVA/SiO₂/C nanofibers with different concentrations of carbon nanospheres: 0 (b), 50 (c), and 75 mg/mL (d); inset of (d) is the cross section SEM image of fibers in (d); the inset graphs are the diameter distribution.

(a)

(b)

(c)

(d)