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. 2022 Feb 25;12(5):779. doi: 10.3390/nano12050779

Figure 7.

Figure 7

XPS characterization of Ag/Au-NPs with Ag:Au ratios of 20:80, 40:60, 60:40 and 80:20. (A) Wide energy range scans. (B) Ag 3d core level spectra. The dotted line corresponds to the BE of Ag 3d5/2 (368.2 eV) found in bulk Ag [66].