Research Article
Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice
Table 1
Comparison of the QYs of C-dots prepared by various natural precursors.
| Precursor | Size (nm) | Color | QYs (%) | Ref. |
| Apple juice | 2.8 ± 0.4 | Blue | 6.4 | [5] | Strawberry juice | 5.2 | Blue | 6.3 | [6] | Pomelo peel | 2 ± 0.5 | Blue | 6.9 | [9] | Willow bark | 1–4 | Blue | 6.9 | [10] | Watermelon | 2 ± 0.5 | Blue | 7.1 | [11] | Orange juice | 1.5–4.5 | Green | 26 | [7] | Fungus | 2.3 ± 0.3 | Blue | 15.3 | [21] | Carrot juice | 2–8 | Blue | 5.16 | [22] | Soy milk | 13–40 | Blue | | [23] | Garlic | 1–3 | Blue | 5.1–10.5 | [24] | Onion waste | 15 | Blue | 28 | [17] | Lemon juice | 3–5 | Green | 21.37 | In this study |
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