Potentiometric sensing of potassium ion (K+) using valinomycin supported on ZnO/rGO nanocomposites.
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| Title: | Potentiometric sensing of potassium ion (K+) using valinomycin supported on ZnO/rGO nanocomposites. |
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| Authors: | Tharini, C.1 (AUTHOR) tharini@crescent.education, Iyappan, G.2 (AUTHOR), Manikandan, E.3 (AUTHOR), Sephra, Percy J.1 (AUTHOR) |
| Source: | Journal of Materials Science: Materials in Electronics. Jul2023, Vol. 34 Issue 19, p1-12. 12p. |
| Abstract: | A solid-contact ion-selective electrode (ISE) was fabricated using zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites as an intermediate layer between glassy carbon electrode (GCE) and ionophore. The resulting solid contact acts as an ion-to-electron transducer in potassium ion-selective electrode (K+-ISE) containing valinomycin as ionophore. The new transducing layer was characterized by using scanning electron microscopy (SEM), X-ray diffraction analysis, and cyclic voltammetry (CV) techniques. Hexagonal wurtzite phase of ZnO was revealed from diffraction analysis and the SEM images showed the formation of one-dimensional nanorods with hexagonal top surfaces. Validation of the sensing material was carried out using CV studies and the experimental studies showed that ZnO/rGO has a strong capability to function as a solid contact in the fabrication of K+-ISEs. Valinomycin-based ISE developed using ZnO/rGO showed a high sensitivity of 9.95 µA (µM)−1 cm− 2 with a faster response time of ~ 2 s and limit of detection (LOD) of 0.956 mM. Interference studies, reproducibility, and long-term stability of the sensing material toward K+ detection were assessed and the results showed that the ZnO/rGO redox capacitance is favorable for solid contact as K+-ISE for real-time application in soil analysis. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 167345919 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Potentiometric sensing of potassium ion (K<superscript>+</superscript>) using valinomycin supported on ZnO/rGO nanocomposites. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Tharini%2C+C%2E%22">Tharini, C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tharini@crescent.education</i><br /><searchLink fieldCode="AR" term="%22Iyappan%2C+G%2E%22">Iyappan, G.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Manikandan%2C+E%2E%22">Manikandan, E.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sephra%2C+Percy+J%2E%22">Sephra, Percy J.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Jul2023, Vol. 34 Issue 19, p1-12. 12p. – Name: Abstract Label: Abstract Group: Ab Data: A solid-contact ion-selective electrode (ISE) was fabricated using zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites as an intermediate layer between glassy carbon electrode (GCE) and ionophore. The resulting solid contact acts as an ion-to-electron transducer in potassium ion-selective electrode (K+-ISE) containing valinomycin as ionophore. The new transducing layer was characterized by using scanning electron microscopy (SEM), X-ray diffraction analysis, and cyclic voltammetry (CV) techniques. Hexagonal wurtzite phase of ZnO was revealed from diffraction analysis and the SEM images showed the formation of one-dimensional nanorods with hexagonal top surfaces. Validation of the sensing material was carried out using CV studies and the experimental studies showed that ZnO/rGO has a strong capability to function as a solid contact in the fabrication of K+-ISEs. Valinomycin-based ISE developed using ZnO/rGO showed a high sensitivity of 9.95 µA (µM)−1 cm− 2 with a faster response time of ~ 2 s and limit of detection (LOD) of 0.956 mM. Interference studies, reproducibility, and long-term stability of the sensing material toward K+ detection were assessed and the results showed that the ZnO/rGO redox capacitance is favorable for solid contact as K+-ISE for real-time application in soil analysis. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10854-023-10806-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Titles: – TitleFull: Potentiometric sensing of potassium ion (K+) using valinomycin supported on ZnO/rGO nanocomposites. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Tharini, C. – PersonEntity: Name: NameFull: Iyappan, G. – PersonEntity: Name: NameFull: Manikandan, E. – PersonEntity: Name: NameFull: Sephra, Percy J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 09574522 Numbering: – Type: volume Value: 34 – Type: issue Value: 19 Titles: – TitleFull: Journal of Materials Science: Materials in Electronics Type: main |
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