Figure 2.
Cyclic voltammograms of bare SPE, SPE/clay/CS, and SPE/clay/AuNPs/CS: (a) Kaol, (b) Mt, (c) Bent, and (d) Sep in 0.1 M PBS (pH 9.0) containing 10 mM [Fe(CN)6]3–/4– and 0.1 M KCl; scan rate 50 mV/s.
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