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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Cyclic voltammograms of 10 µM insulin on SPCE/MWCNT/NiO1.5 at different scan rates (A). The dependences of the peak current on scan rate (B), peak current on the square root of scan rate (C), and of logI on logv (D).