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The bands observed for Cu2O in B7 sample compared with the bands for pure copper oxides.
| B7 sample point B bands (cm−1) | B7 sample point C bands (cm−1) | Cu2O reference bands (cm−1) | CuO reference bands (cm−1) |
|---|---|---|---|
| 154 | 151 | 147 | – |
| 217 | 219 | 219 | – |
| – | – | – | 292 |
| – | – | – | 342 |
| – | 417 | 413 | – |
| – | 499 | 491 | – |
| 500 | – | ||
| – | – | – | 624 |
| 650 | 647 | 630 | – |
| 643 | – |
