Synthesis and Optimization of Visible Light Active BiVO₄ Photocatalysts for the Degradation of RhB

Figure 3

SEM images of BiVO₄ samples obtained from various synthesis methods: (a) coprecipitation, (b) combustion, (c) calcination, (d) hydrothermal, (e) calcination and hydrothermal method.

(a)

(b)

(c)

(d)

(e)