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. 2019 Aug 16;19:662–675. doi: 10.1016/j.isci.2019.08.019

Figure 2.

Figure 2

Characterizations of the Chemical Compositions of GDY and GDYO

(A and B) Representative transmission electron microscopic mapping of (A) GDY and (B) GDYO.

(C–F) (C) Raman spectra and (D) FTIR spectra of GDY and GDYO. C 1s peak in the XPS spectra of (E) GDY and (F) GDYO.