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. 2022 Dec 1;7(49):45067–45076. doi: 10.1021/acsomega.2c05486

Figure 4.

Figure 4

Physical characterization. (A) Raman spectra of GF, OGF, and Cu-OGF pH 2; (B) XRD patterns of GF, as-prepared Cu-OGF pH 2, reduced Cu-OGF pH 2, Cu2O (JCPDS 03-065-3288), and Cu (JCPDS 00-004-0836); and (C) EDX spectra of the Cu-OGF pH 2 surface.