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

Figure 4

FE-SEM images of BiOBr-Bi₂WO₆ composites synthesized for 6 h under (a) 90°C, (b) 120°C, (c) 150°C, (d) 180°C, and (e) 210°C and that of (f) pure BiOBr.

(a)

(b)

(c)

(d)

(e)

(f)