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. 2022 Oct 21;12(20):3696. doi: 10.3390/nano12203696

Figure 1.

Figure 1

Schematic illustration of the development of GQDs from biomass waste. Biomass waste is first converted into biochar via pyrolysis and then treated at 200–250 °C for several hours in the presence of Oxone and DMF to produce GQDs.