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An efficient amperometric sensor for chloride ion detection through electroactive e-spun PVA-PANi-g-C3N4 nanofiber

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Abstract

A novel method for selective and sensitive detection of chloride ion plays a vital role in environmental monitoring, industrial and healthcare sectors. Here, we spotlight the synthesis, characterization and electrochemical performance analysis of electrospun PVA-PANi-g-C3N4 nanofibers (NFs) over screen printed carbon electrode and engaged as a modified NF electrode for chloride ion determination. The resulting nanofibers morphological views, functional groups and elemental composition were captured and recorded by FESEM, FTIR and XPS. The electrochemical behaviour of PVA-PANi-g-C3N4 NFs was studied by cyclic voltammetry, electrochemical impedance spectroscopy, and chronoamperometric techniques, as the results directed that the modified NF electrode reveals a significant electrochemical sensitivity, selectivity for Cl− ion with the value of linear regression co-efficient R2 = 0.99. The lowest limit of detection 0.2 µM with greater sensitivity (1.6082 µM µA/cm2) was succeeded. Owing to its synergistic interaction amid the PVA-PANi with g-C3N4 NF combinations an efficient electron transfer pathway was achieved which leads to an excellent ionic diffusion. Further, the outcomes from the real sample analysis creating them attractive and helping in profound study for electrochemical sensor towards practical applications.

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Acknowledgements

Authors are grateful to the Researchers Supporting Project No. (RSP-2021/1), King Saud University, Riyadh, Saudi Arabia.

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Authors and Affiliations

  1. Nano Electrochemistry Lab (NEL), Department of Chemistry, National Institute of Technology Puducherry, Karaikal, 609-609, India

    Bavatharani Chokkiah & Ragupathy Dhanusuraman

  2. Indian Institute of Technology Jammu, Jammu, J&K, 181221, India

    Muthusankar Eswaran

  3. Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia

    Saikh Mohammad Wabaidur & Zeid Abdullah Alothman

  4. Research Institute of Advanced Energy Technology, Kyungpook National University, Daegu, 41566, South Korea

    Soo Chool Lee

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  1. Bavatharani Chokkiah
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Chokkiah, B., Eswaran, M., Wabaidur, S.M. et al. An efficient amperometric sensor for chloride ion detection through electroactive e-spun PVA-PANi-g-C3N4 nanofiber. J Mater Sci: Mater Electron 33, 9425–9437 (2022). https://doi.org/10.1007/s10854-021-07378-0

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