Research Article

Enhanced Photoactivity of Fe + N Codoped Anatase-Rutile Nanowire Film under Visible Light Irradiation

Figure 4

XPS spectra of (a) survey spectrum, (b) N 1s, and (c) Fe 2p for codoped TiO2.
398508.fig.004a
(a)
398508.fig.004b
(b)
398508.fig.004c
(c)