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. 2020 Apr 1;5(14):8219–8229. doi: 10.1021/acsomega.0c00510

Figure 7.

Figure 7

(a) FT-IR spectra of compound C and C-CDs. (b) X-ray photoelectron spectroscopy (XPS) survey of C-CDs. (c) C 1s spectra of C-CDs. (d) N 1s spectra of C-CDs. (e) O 1s spectra of C-CDs.