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. 2021 Dec 24;22(1):105. doi: 10.3390/s22010105

Figure 3.

Figure 3

Cyclic voltammograms in the presence of K3[Fe(CN)6]/K4[Fe(CN)6] for: bare electrode (curve a), Cs-CNTs/GCE (curve b), AuNPs/Cs-CNTs/GCE (curve c), Apta/AuNPs/Cs-CNTS/GCE (curve d), Cd2+/Apta/AuNPs/Cs-CNTS/GCE (curve e). Potential was scanned from 1 V to −1 V with a scan rate of 50 mV s−1.