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Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane

[Image: see text] Graphene oxide (GO) is an ultrathin carbon nanosheet with various oxygen-containing functional groups. The utilization of GO has attracted tremendous attention in a number of areas, such as electronics, optics, optoelectronics, catalysis, and bioengineering. Here, we report the dev...

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Autores principales: Miyamoto, Azumi, Kuwaki, Yuta, Sano, Toshifumi, Hatakeyama, Kazuto, Quitain, Armand, Sasaki, Mitsuru, Kida, Tetsuya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641019/
https://www.ncbi.nlm.nih.gov/pubmed/31457634
http://dx.doi.org/10.1021/acsomega.7b00239
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author Miyamoto, Azumi
Kuwaki, Yuta
Sano, Toshifumi
Hatakeyama, Kazuto
Quitain, Armand
Sasaki, Mitsuru
Kida, Tetsuya
author_facet Miyamoto, Azumi
Kuwaki, Yuta
Sano, Toshifumi
Hatakeyama, Kazuto
Quitain, Armand
Sasaki, Mitsuru
Kida, Tetsuya
author_sort Miyamoto, Azumi
collection PubMed
description [Image: see text] Graphene oxide (GO) is an ultrathin carbon nanosheet with various oxygen-containing functional groups. The utilization of GO has attracted tremendous attention in a number of areas, such as electronics, optics, optoelectronics, catalysis, and bioengineering. Here, we report the development of GO-based solid electrolyte gas sensors that can continuously detect combustible gases at low concentrations. GO membranes were fabricated by filtration using a colloidal solution containing GO nanosheets synthesized by a modified Hummers’ method. The GO membrane exposed to humid air showed good proton-conducting properties at room temperature, as confirmed by hydrogen concentration cell measurements and complex impedance analyses. Gas sensor devices were fabricated using the GO membrane fitted with a Pt/C sensing electrode. The gas-sensing properties were examined by potentiometric and amperometric techniques. The GO sensor showed high, stable, and reproducible responses to hydrogen at parts per million concentrations in humid air at room temperature. The sensing mechanism is explained in terms of the mixed-potential theory. Our results suggest the promising capability of GO for the electrochemical detection of combustible gases.
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spelling pubmed-66410192019-08-27 Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane Miyamoto, Azumi Kuwaki, Yuta Sano, Toshifumi Hatakeyama, Kazuto Quitain, Armand Sasaki, Mitsuru Kida, Tetsuya ACS Omega [Image: see text] Graphene oxide (GO) is an ultrathin carbon nanosheet with various oxygen-containing functional groups. The utilization of GO has attracted tremendous attention in a number of areas, such as electronics, optics, optoelectronics, catalysis, and bioengineering. Here, we report the development of GO-based solid electrolyte gas sensors that can continuously detect combustible gases at low concentrations. GO membranes were fabricated by filtration using a colloidal solution containing GO nanosheets synthesized by a modified Hummers’ method. The GO membrane exposed to humid air showed good proton-conducting properties at room temperature, as confirmed by hydrogen concentration cell measurements and complex impedance analyses. Gas sensor devices were fabricated using the GO membrane fitted with a Pt/C sensing electrode. The gas-sensing properties were examined by potentiometric and amperometric techniques. The GO sensor showed high, stable, and reproducible responses to hydrogen at parts per million concentrations in humid air at room temperature. The sensing mechanism is explained in terms of the mixed-potential theory. Our results suggest the promising capability of GO for the electrochemical detection of combustible gases. American Chemical Society 2017-06-28 /pmc/articles/PMC6641019/ /pubmed/31457634 http://dx.doi.org/10.1021/acsomega.7b00239 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Miyamoto, Azumi
Kuwaki, Yuta
Sano, Toshifumi
Hatakeyama, Kazuto
Quitain, Armand
Sasaki, Mitsuru
Kida, Tetsuya
Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane
title Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane
title_full Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane
title_fullStr Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane
title_full_unstemmed Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane
title_short Solid Electrolyte Gas Sensor Based on a Proton-Conducting Graphene Oxide Membrane
title_sort solid electrolyte gas sensor based on a proton-conducting graphene oxide membrane
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641019/
https://www.ncbi.nlm.nih.gov/pubmed/31457634
http://dx.doi.org/10.1021/acsomega.7b00239
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