Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors

The purpose of this work was the fabrication of a conductive carbon nanotube (CNT) ink. The proposed CNT ink remained remarkably stable over several months. The method includes combining the covalent and non-covalent functionalization, resulting in ink that exhibits excellent storage stability. The...

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Autores principales:	Ana Elisa Ferreira Oliveira, Arnaldo César Pereira, Lucas Franco Ferreira
Formato:	article
Lenguaje:	EN
Publicado:	International Association of Physical Chemists (IAPC) 2021
Materias:	Conductive ink; characterization; electrochemical sensor; carbon materials; stable ink Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/96e3b3fa42f842fcb983b220f623a283
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spelling	oai:doaj.org-article:96e3b3fa42f842fcb983b220f623a2832021-12-02T10:23:18ZDevelopment of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors10.5599/jese.11341847-9286https://doaj.org/article/96e3b3fa42f842fcb983b220f623a2832021-12-01T00:00:00Zhttps://www.pub.iapchem.org/ojs/index.php/JESE/article/view/1134https://doaj.org/toc/1847-9286 The purpose of this work was the fabrication of a conductive carbon nanotube (CNT) ink. The proposed CNT ink remained remarkably stable over several months. The method includes combining the covalent and non-covalent functionalization, resulting in ink that exhibits excellent storage stability. The covalent functionalization was performed in the acid medium using H2SO4 and HNO3, while the non-covalent functionalization used sodium dodecyl sulfate (SDS) and ultrasonication. The materials were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). FTIR and SEM confirmed that at the non-covalent functionalization, SDS was successfully adsorbed on the f-CNT surface, while at the covalent functionalization, the functional groups (-COOH, C=O and -OH) were inserted into the CNT surface. Voltammetry and EIS indicated that SDS in the presence of functional groups facilitates electron transfer by improved electrical conductivity. The final product was a well-dispersed CNT ink with an average ohmic resistance of 18.62 kΩ. This indicates that CNT ink can be used in the fabrication of electrochemical sensors. Ana Elisa Ferreira OliveiraArnaldo César PereiraLucas Franco FerreiraInternational Association of Physical Chemists (IAPC)articleConductive ink; characterization; electrochemical sensor; carbon materials; stable inkChemistryQD1-999ENJournal of Electrochemical Science and Engineering, Vol 11, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Conductive ink; characterization; electrochemical sensor; carbon materials; stable ink Chemistry QD1-999
spellingShingle	Conductive ink; characterization; electrochemical sensor; carbon materials; stable ink Chemistry QD1-999 Ana Elisa Ferreira Oliveira Arnaldo César Pereira Lucas Franco Ferreira Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
description	The purpose of this work was the fabrication of a conductive carbon nanotube (CNT) ink. The proposed CNT ink remained remarkably stable over several months. The method includes combining the covalent and non-covalent functionalization, resulting in ink that exhibits excellent storage stability. The covalent functionalization was performed in the acid medium using H2SO4 and HNO3, while the non-covalent functionalization used sodium dodecyl sulfate (SDS) and ultrasonication. The materials were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). FTIR and SEM confirmed that at the non-covalent functionalization, SDS was successfully adsorbed on the f-CNT surface, while at the covalent functionalization, the functional groups (-COOH, C=O and -OH) were inserted into the CNT surface. Voltammetry and EIS indicated that SDS in the presence of functional groups facilitates electron transfer by improved electrical conductivity. The final product was a well-dispersed CNT ink with an average ohmic resistance of 18.62 kΩ. This indicates that CNT ink can be used in the fabrication of electrochemical sensors.
format	article
author	Ana Elisa Ferreira Oliveira Arnaldo César Pereira Lucas Franco Ferreira
author_facet	Ana Elisa Ferreira Oliveira Arnaldo César Pereira Lucas Franco Ferreira
author_sort	Ana Elisa Ferreira Oliveira
title	Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
title_short	Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
title_full	Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
title_fullStr	Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
title_full_unstemmed	Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
title_sort	development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
publisher	International Association of Physical Chemists (IAPC)
publishDate	2021
url	https://doaj.org/article/96e3b3fa42f842fcb983b220f623a283
work_keys_str_mv	AT anaelisaferreiraoliveira developmentofhighlystableconductivemultiwalledcarbonnanotubeinkusingcovalentandnoncovalentfunctionalizationforelectrochemicalsensors AT arnaldocesarpereira developmentofhighlystableconductivemultiwalledcarbonnanotubeinkusingcovalentandnoncovalentfunctionalizationforelectrochemicalsensors AT lucasfrancoferreira developmentofhighlystableconductivemultiwalledcarbonnanotubeinkusingcovalentandnoncovalentfunctionalizationforelectrochemicalsensors
_version_	1718397304479678464

Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors

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