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Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore

Herein, a facile route leading to good single-walled carbon nanotubes (SWCNT) dispersion or poly (3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) based single-piece nanocomposite membrane is proposed for trace determination of Cu(2+) ions. The single-piece solid contact Cu(2+)-selecti...

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Autores principales: E. Amr, Abd El-Galil, Al-Omar, Mohamed A., H. Kamel, Ayman, A. Elsayed, Elsayed
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6429070/
https://www.ncbi.nlm.nih.gov/pubmed/30845715
http://dx.doi.org/10.3390/molecules24050920
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author E. Amr, Abd El-Galil
Al-Omar, Mohamed A.
H. Kamel, Ayman
A. Elsayed, Elsayed
author_facet E. Amr, Abd El-Galil
Al-Omar, Mohamed A.
H. Kamel, Ayman
A. Elsayed, Elsayed
author_sort E. Amr, Abd El-Galil
collection PubMed
description Herein, a facile route leading to good single-walled carbon nanotubes (SWCNT) dispersion or poly (3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) based single-piece nanocomposite membrane is proposed for trace determination of Cu(2+) ions. The single-piece solid contact Cu(2+)-selective electrodes were prepared after drop casting the membrane mixture on the glassy-carbon substrates. The prepared potentiometric sensors revealed a Nernstian response slope of 27.8 ± 0.3 and 28.1 ± 0.4 mV/decade over the linearity range 1.0 × 10(−3) to 2.0 × 10(−9) and 1.0 × 10(−3) to 1.0 × 10(−9) M with detection limits of 5.4 × 10(−10) and 5.0 × 10(−10) M for sensors based on SWCNTs and PEDOT/PSS, respectively. Excellent long-term potential stability and high hydrophobicity of the nanocomposite membrane are recorded for the prepared sensors due to the inherent high capacitance of SWCNT used as a solid contact material. The sensors exhibited high selectivity for Cu(2+) ions at pH 4.5 over other common ions. The sensors were applied for Cu(2+) assessment in tap water and different tea samples. The proposed sensors were robust, reliable and considered as appealing sensors for copper (II) detection in different complex matrices.
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spelling pubmed-64290702019-04-15 Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore E. Amr, Abd El-Galil Al-Omar, Mohamed A. H. Kamel, Ayman A. Elsayed, Elsayed Molecules Article Herein, a facile route leading to good single-walled carbon nanotubes (SWCNT) dispersion or poly (3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) based single-piece nanocomposite membrane is proposed for trace determination of Cu(2+) ions. The single-piece solid contact Cu(2+)-selective electrodes were prepared after drop casting the membrane mixture on the glassy-carbon substrates. The prepared potentiometric sensors revealed a Nernstian response slope of 27.8 ± 0.3 and 28.1 ± 0.4 mV/decade over the linearity range 1.0 × 10(−3) to 2.0 × 10(−9) and 1.0 × 10(−3) to 1.0 × 10(−9) M with detection limits of 5.4 × 10(−10) and 5.0 × 10(−10) M for sensors based on SWCNTs and PEDOT/PSS, respectively. Excellent long-term potential stability and high hydrophobicity of the nanocomposite membrane are recorded for the prepared sensors due to the inherent high capacitance of SWCNT used as a solid contact material. The sensors exhibited high selectivity for Cu(2+) ions at pH 4.5 over other common ions. The sensors were applied for Cu(2+) assessment in tap water and different tea samples. The proposed sensors were robust, reliable and considered as appealing sensors for copper (II) detection in different complex matrices. MDPI 2019-03-06 /pmc/articles/PMC6429070/ /pubmed/30845715 http://dx.doi.org/10.3390/molecules24050920 Text en © 2019 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/).
spellingShingle Article
E. Amr, Abd El-Galil
Al-Omar, Mohamed A.
H. Kamel, Ayman
A. Elsayed, Elsayed
Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore
title Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore
title_full Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore
title_fullStr Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore
title_full_unstemmed Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore
title_short Single-Piece Solid Contact Cu(2+)-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore
title_sort single-piece solid contact cu(2+)-selective electrodes based on a synthesized macrocyclic calix[4]arene derivative as a neutral carrier ionophore
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6429070/
https://www.ncbi.nlm.nih.gov/pubmed/30845715
http://dx.doi.org/10.3390/molecules24050920
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