Table 2. Optical Band Gaps for BiVO4 and the BiVO4/MWCNTs Nanocomposite.
| materials | wavelength (nm) | energy band gap (eV) |
|---|---|---|
| BiVO4 nanostructures before adding MWCNTs | 466 | 2.6 |
| BiVO4/MWCNTs nanocomposite | 520 | 2.48 |
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