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. 2020 Nov 23;10(11):2316. doi: 10.3390/nano10112316

Figure 4.

Figure 4

The preparation of fluorescence C-dots from biomass wastes through the hydrothermal method. (a) The preparation and application of C-dots from pomelo peel [58]; (b) absorption spectra of naphthol blue-black (NBB) azo dye over C-dots/ZnO at different irradiation intervals [59]; (c) the photocatalytic degradation of methylene blue (MB) on TiO2–C-dots composite under UV light irradiation [60]; (d) the synthesis and application of C-dots from bamboo leaves [61].