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A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor

Developing a sensing layer with high electroactive properties is an important aspect for proper functionality of a wearable sensor. The polymeric nanocomposite material obtained by a simple electropolymerization on gold interdigitated electrodes (IDEs) can be optimized to have suitable conductive pr...

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Autores principales: Savin, Mihaela, Mihailescu, Carmen-Marinela, Avramescu, Viorel, Dinulescu, Silviu, Firtat, Bogdan, Craciun, Gabriel, Brasoveanu, Costin, Pachiu, Cristina, Romanitan, Cosmin, Serban, Andreea-Bianca, Ion, Alina Catrinel, Moldovan, Carmen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7961761/
https://www.ncbi.nlm.nih.gov/pubmed/33807640
http://dx.doi.org/10.3390/s21051801
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author Savin, Mihaela
Mihailescu, Carmen-Marinela
Avramescu, Viorel
Dinulescu, Silviu
Firtat, Bogdan
Craciun, Gabriel
Brasoveanu, Costin
Pachiu, Cristina
Romanitan, Cosmin
Serban, Andreea-Bianca
Ion, Alina Catrinel
Moldovan, Carmen
author_facet Savin, Mihaela
Mihailescu, Carmen-Marinela
Avramescu, Viorel
Dinulescu, Silviu
Firtat, Bogdan
Craciun, Gabriel
Brasoveanu, Costin
Pachiu, Cristina
Romanitan, Cosmin
Serban, Andreea-Bianca
Ion, Alina Catrinel
Moldovan, Carmen
author_sort Savin, Mihaela
collection PubMed
description Developing a sensing layer with high electroactive properties is an important aspect for proper functionality of a wearable sensor. The polymeric nanocomposite material obtained by a simple electropolymerization on gold interdigitated electrodes (IDEs) can be optimized to have suitable conductive properties to be used with direct current (DC) measurements. A new layer based on polyaniline:poly(4-styrenesulfonate) (PANI:PSS)/single-walled carbon nanotubes (SWCNT)/ferrocene (Fc) was electrosynthesized and deposed on interdigital transducers (IDT) and was characterized in detail using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoemission spectroscopy (XPS), and X-ray diffraction (XRD). The sensor characteristics of the material towards carbon monoxide (CO) in the concentration range of 10–300 ppm were examined, showing a minimal relative humidity interference of only 1% and an increase of sensitivity with the increase of CO concentration. Humidity interference could be controlled by the number of CV cycles when a compact layer was formed and the addition of Fc played an important role in the decrease of humidity. The results for CO detection can be substantially improved by optimizing the number of deposition cycles and enhancing the Fc concentration. The material was developed for selective detection of CO in real environmental conditions and shows good potential for use in a wearable sensor.
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spelling pubmed-79617612021-03-17 A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor Savin, Mihaela Mihailescu, Carmen-Marinela Avramescu, Viorel Dinulescu, Silviu Firtat, Bogdan Craciun, Gabriel Brasoveanu, Costin Pachiu, Cristina Romanitan, Cosmin Serban, Andreea-Bianca Ion, Alina Catrinel Moldovan, Carmen Sensors (Basel) Article Developing a sensing layer with high electroactive properties is an important aspect for proper functionality of a wearable sensor. The polymeric nanocomposite material obtained by a simple electropolymerization on gold interdigitated electrodes (IDEs) can be optimized to have suitable conductive properties to be used with direct current (DC) measurements. A new layer based on polyaniline:poly(4-styrenesulfonate) (PANI:PSS)/single-walled carbon nanotubes (SWCNT)/ferrocene (Fc) was electrosynthesized and deposed on interdigital transducers (IDT) and was characterized in detail using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoemission spectroscopy (XPS), and X-ray diffraction (XRD). The sensor characteristics of the material towards carbon monoxide (CO) in the concentration range of 10–300 ppm were examined, showing a minimal relative humidity interference of only 1% and an increase of sensitivity with the increase of CO concentration. Humidity interference could be controlled by the number of CV cycles when a compact layer was formed and the addition of Fc played an important role in the decrease of humidity. The results for CO detection can be substantially improved by optimizing the number of deposition cycles and enhancing the Fc concentration. The material was developed for selective detection of CO in real environmental conditions and shows good potential for use in a wearable sensor. MDPI 2021-03-05 /pmc/articles/PMC7961761/ /pubmed/33807640 http://dx.doi.org/10.3390/s21051801 Text en © 2021 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
Savin, Mihaela
Mihailescu, Carmen-Marinela
Avramescu, Viorel
Dinulescu, Silviu
Firtat, Bogdan
Craciun, Gabriel
Brasoveanu, Costin
Pachiu, Cristina
Romanitan, Cosmin
Serban, Andreea-Bianca
Ion, Alina Catrinel
Moldovan, Carmen
A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor
title A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor
title_full A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor
title_fullStr A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor
title_full_unstemmed A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor
title_short A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor
title_sort new hybrid sensitive pani/swcnt/ferrocene-based layer for a wearable co sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7961761/
https://www.ncbi.nlm.nih.gov/pubmed/33807640
http://dx.doi.org/10.3390/s21051801
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