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. 2019 Jun 14;1(8):2924–2936. doi: 10.1039/c9na00164f

Fig. 2. (a) Illustration of the preparation process of CA (PHM3 algae) nanodots through hydrothermal carbonization. (b) UV-visible absorption spectrum and (c) fluorescence spectrum of the as-prepared CA (PHM3 algae) nanodots at different excitation wavelengths.

Fig. 2