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. 2023 Sep 7;23(18):7732. doi: 10.3390/s23187732

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© 2023 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 (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Cyclic voltammograms measured in 0.50 M H₂SO₄ within the potential range of $-$ 0.5 V to 1.5 V vs. Ag|AgCl at a scan rate of 50 mV $s^{- 1}$ using bare GCE, MWCNT/Nafion-modified GCE (a), and TiO2/MWCNT/Nafion-modified GCE (b).