Figure 4.

Structure, Morphology, and Optical Properties

(A) XRD patterns of TXT, ET, and WT photocatalysts (XRD pattern of FTO was used as a baseline for comparison with catalyst films).

(B) Raman spectrum of fabricated photocatalyst films.

(C), (D), and (E) FE-SEM images of the nanoporous WT, ET, and TXT photocatalysts with their particle size distribution (inserted).

(F) Amperometric i-t curves of TXT, ET, and WT photocatalysts under chopped illumination.

(G) Electrochemical impedance spectroscopy (EIS) Nyquist plot of TXT, ET, and WT catalyst films.