Table 3 Absorption and emission characteristics, along with quantum yields (QY), of CQDs, ordered by QY values. The emission peak reported for this study was obtained at an excitation wavelength of 340 nm.
Material | Absorption peak (nm) | Emission peak (nm) | QY (%) | Ref. |
|---|---|---|---|---|
CQDs from flour | 365 | 442 | 5.4 | |
CQDs from strawberry juice | 344 | 427 | 6.3 | |
CQDs from orange peels | 332 | 426 | 11.37 | |
CQDs from potatoes | 323 | 405 | 15 | |
CQDs from orange peels | 300 | 520 | 16.2 | |
CQDs from sugarcane industrial wastes | 330 | 420 | 17.98 | |
CQDs from honey | 338 | 435 | 19.8 | |
CQDs from banana peels | 355 | 429 | 20 | |
CQDs from orange peels | 338 | 419 | 21.7 | This work |
CQDs from gelatin | 350 | 430 | 31.6 | |
CQDs from oatmeal | 360 | 438 | 37.4 | |
CQDs from orange pomace | 340 | 448 | 54.26 | |
CQDs from Tween\(\circledR\) 80 solution, citric acid and urea | 350 | 440 | 75.5 |
