fig4
Figure 4. FT-IR spectra a. and Raman spectrum b. of the as-prepared materials. CDs/HCPP: Carbon dots incorporated in hydrochar; CDs: carbon dots; PP: pomelo peel; FT-IR: Fourier transform infrared spectroscopy.
Figure 4. FT-IR spectra a. and Raman spectrum b. of the as-prepared materials. CDs/HCPP: Carbon dots incorporated in hydrochar; CDs: carbon dots; PP: pomelo peel; FT-IR: Fourier transform infrared spectroscopy.
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