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

Figure 5

XPS spectra of fibers of sample F4 before calcination: (a) F 1s, (b) Ti 2p, (c) O 1s spectra, and (d) spectrum for all the elements in the fiber.

(a)

(b)

(c)

(d)