Figure 6 | Scientific Reports

Figure 6

From: Highly sensitive non-enzymatic electrochemical glucose sensor based on dumbbell-shaped double-shelled hollow nanoporous CuO/ZnO microstructures

Figure 6

(a) The CV responses of the bare and the modified GCE with CuO/ZnO-DSDSHNM at the scan rate of 50 mVs−1 in the absence and presence of 5 mM glucose. (b)The CVs of Nafion/CuO/ZnO-DSDSHNM/GCE at the scan rate of 50 mVfs−1 in 0.5 M NaOH solution at different glucose concentrations. (c) i–t curves of (A) bare GCE, (B) Nafion/ZnO-MS/GCE, (C) Nafion/CuO-MS/GCE, and (D) Nafion/CuO/ZnO-DSDSHNM/GCE by successive addition of 0.50 mM of glucose to the final concentration of 4 mM. The inset plot of (c) is the magnified view of the (A) bare GCE and (B) Nafion/ZnO-MS/GCE by successive addition glucose in the range of 0.50–4 mM.

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