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. 2015 Jan 26;15(2):2709–2722. doi: 10.3390/s150202709

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Figure 5. — Cyclic voltammograms of (a) bare GCE; (b) rGSs/GCE; (c) Au/GCE; (d) Pt/GCE; (e) Pt-Au/GCE and (f) Pt/rGSs/GCE; (g) Pt-Au/rGSs/GCE in 0.1 M PBS (pH = 7.4) containing 0.1 mM H₂O₂ at a scan rate of 100 mV·s⁻¹.