Research Article
Effect of Surface Site Defects on Photocatalytic Properties of BiVO4/TiO2 Heterojunction for Enhanced Methylene Blue Degradation
Figure 4
SEM images of the as elaborated samples: (a), (b) BiVO4, (c) TiO2, and (d) 2 wt% BiVO4/TiO2.
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| (b) |
| (c) |
| (d) |