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. 2021 Jun 23;11(7):205. doi: 10.3390/bios11070205

Figure 3.

Figure 3

UV–visible absorption spectra and photographs of the vancomycin-coated gold nanoparticles (A). Cyclic voltammetry curves recorded between +1.35 V and −1.40 V at a scan rate of 50 mV/s for a 1 M HCl solution in the absence and in the presence of AuNP@vancomycin (B). Chronoamperograms were recorded by applying a potential of +1.35 V for 60 s, followed by −1.00 V for 100 s, in 1 M HCl solution without (upper curve) and in the presence (lower curve) of AuNP@vancomycin at the surface of a screen-printed carbon electrode (C).