Figure 2
(A) High resolution Ag 3d XPS spectra of different studied silver microstructures; Agball (black-line, curve a), Aglily-flower (red-line, curve b) and AgRose-flower (green-line, curves c), (B) CVs obtained at same silver microstructures (same color code from Fig. 2A); Agball (curve a), Aglily-flower (curve b) and AgRose-flower (curve c) in 0.1 M KOH with a scan rate of 0.1 V/s (inset shows the Pb (UPD) stripping measured in 0.1 M HCl containing 10 mM Pb(NO3)2), (C) CVs measured at the same electrodes in the absence (dashed-lines) and in the presence of 1 mM H2O2 (solid-lines) in 0.1 M KOH with a potential scan rate of 0.02 V/s (same color code as in Fig. 2A. For E/V vs. SCE > 0, the graph mimic the response seen in panel A) and (D) Nyquist plots obtained at the same electrodes in 0.1 M KOH containing 1 mM H2O2 at −0.25 V vs. SCE (same color code as in Fig. 2A).
