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| Sample | P-XRD | Raman | |||
|---|---|---|---|---|---|
| 2θ/degree | Crystallite size/nm | Interlayer spacing/nm | I D/IG | Crystallite size/nm | |
| Bi2O3 | 26.8 | 29.2 | 0.33 | — | 34.4 |
| rGO/Bi2O3 | 27.1 | 20.9 | 0.32 | 1.50 | 29.6 |
| N-rGO/Bi2O3 | 27.9 | 19.5 | 0.30 | 1.79 | 28.1 |
| B-rGO/Bi2O3 | 28.0 | 16.8 | 0.30 | 1.82 | 27.3 |
