Table 2.
Band gap energy values (Eg), indirect (I) and direct (D), obtained from Tauc plots of GO and RGO based aqueous nanofluids.
| Sample | Optical band gap energies (eV) | |
|---|---|---|
| n = 2 (I) | n = ½ (D) | |
| GO | 3.4–4.4 | 2.2–3.4 |
| RGO | 3.4–4.3 | 2.5–3.7 |
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