Synthesis and Characterization of Structure-Controlled Micro-/Nanocomposite TiO₂ Fibers with Enhanced Photocatalytic Activity

Figure 8

SEM images of micro-/nanostructured fibers obtained from sample F4 after calcination in a crucible covered with a cap at 500°C for different times: (a) 4 hours, (b) 5 hours, and (c) 6 hours.

(a)

(b)

(c)