Synthesis, Analysis, and Testing of BiOBr-Bi₂WO₆ Photocatalytic Heterojunction Semiconductors

Figure 3

FE-SEM images of BiOBr-Bi₂WO₆ composites synthesized for (a) 3 h, (b) 6 h, (c) 9 h, (d) 12 h, and (e) 15 h under 120°C and that of (f) pure Bi₂WO₆.

(a)

(b)

(c)

(d)

(e)

(f)