fig9

Figure 9. The EPR spectra of CDs/HCPP and CDs/HCPP-700 particles. CDs/HCPP: Carbon dots incorporated in hydrochar; EPR: electron paramagnetic resonance.
Figure 9. The EPR spectra of CDs/HCPP and CDs/HCPP-700 particles. CDs/HCPP: Carbon dots incorporated in hydrochar; EPR: electron paramagnetic resonance.
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