Figure 4 | Scientific Reports

Figure 4

From: Immobilization of myoglobin on Au nanoparticle-decorated carbon nanotube/polytyramine composite as a mediator-free H2O2 and nitrite biosensor

Figure 4

(A) CVs of (a) bare electrode, (b) f-MWCNT-PTy, (c) Au-PTy-f-MWCNT composite and (d) Mb/Au-PTy-f-MWCNT-modified electrodes in 0.05 M deoxygenated PBS (pH 7) at a scan rate of 50 mV s−1. (B) CVs of Mb/Au-PTy-f-MWCNT-modified electrode in N2-saturated PBS (0.05 M, pH 6.5) at different scan rates of (a–j) 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100 mV s−1. (C) Plot of the anodic and cathodic peak currents vs. scan rates. (D) Cyclic voltammograms of Mb/Au-PTy-f-MWCNT biocomposite-modified electrode for 100 multiple cycles in 10 μM H2O2 in 0.05 M PBS (pH 7) at a scan rate of 100 mV s−1.

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