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. 2020 Sep 23;13(19):4241. doi: 10.3390/ma13194241

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© 2020 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 (http://creativecommons.org/licenses/by/4.0/).

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Current response (20 scans) of of (a) SPE/GPE/ZnO NPs/GPE, (b) SPE/LPE/ZnO NPs and (c) SPE/OPE/ZnO NPs in 10 mM K₃[Fe(CN)₆] prepared in 0.1 M KCl at pH ≈ 7 at the scan rate of 25 mV/s.

Current response (20 scans) of of (a) SPE/GPE/ZnO NPs/GPE, (b) SPE/LPE/ZnO NPs and (c) SPE/OPE/ZnO NPs in 10 mM K₃[Fe(CN)₆] prepared in 0.1 M KCl at pH ≈ 7 at the scan rate of 25 mV/s.