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Beilstein J. Nanotechnol. 2024, 15, 755–766, doi:10.3762/bjnano.15.63
Figure 1: UV–vis absorbance spectra of CQD samples synthesized with a) urea (M1 grape and M5 watermelon); b) ...
Figure 2: Size distribution of CQDs by dynamic light scattering.
Figure 3: FTIR of a) grape pomace peel with carbonyl peaks, carbon/nitrogen bonds, OH vibrations and some ove...
Figure 4: Raman spectra recorded for CQDs prepared from grape pomace (left) and watermelon peel (right) as ca...
Figure 5: PL spectra, the samples were excited at 350 nm. The graphics corresponds to a) grape pomace peel an...
Figure 6: Upconversion process of the quantum confinement effect.
Figure 7: Upconversion PL of the samples, the graphics corresponds to grape pomace peel (M1 to M4) and waterm...
Figure 8: First order adjustment for MB photodegradation for a) grape pomace, W lamp; b) grape pomace, sunlig...
Figure 9: Rate constant values for the photocatalytic activity of CQDs synthesized from grape pomace and wate...
Figure 10: Percentage of MB degradation presented by CQDs to be used as catalysts in the degradation of MB dye...