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. 2023 Jun 3;13:9048. doi: 10.1038/s41598-023-36076-6

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Cyclic voltammety of 3B-based electrodes towards the direct voltammetric oxidations of different concentrations of H₂O₂ in (PBS pH = 7.0). The calibration curve is presented in the inset figure. (b) Chronoamperometric calibration curves of bare, 0B, 1B, 2B, and 3B toward different concentrations of H₂O₂ in (PBS pH = 7.0). (c) pH effect on the sensor performance towards the sensitivity of direct peroxides detection.