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Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature
Detection of greenhouse gases is essential because harmful gases in the air diffuse rapidly over large areas in a short period of time, causing air pollution that will induce climate change with catastrophic consequences over time. Among the materials with favorable morphologies for gas detection (n...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10217049/ https://www.ncbi.nlm.nih.gov/pubmed/37232947 http://dx.doi.org/10.3390/gels9050355 |
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author | Chelu, Mariana Chesler, Paul Hornoiu, Cristian Anastasescu, Mihai Calderon-Moreno, Jose Maria Mitrea, Daiana Brasoveanu, Costin Moldovan, Carmen Gartner, Mariuca |
author_facet | Chelu, Mariana Chesler, Paul Hornoiu, Cristian Anastasescu, Mihai Calderon-Moreno, Jose Maria Mitrea, Daiana Brasoveanu, Costin Moldovan, Carmen Gartner, Mariuca |
author_sort | Chelu, Mariana |
collection | PubMed |
description | Detection of greenhouse gases is essential because harmful gases in the air diffuse rapidly over large areas in a short period of time, causing air pollution that will induce climate change with catastrophic consequences over time. Among the materials with favorable morphologies for gas detection (nanofibers, nanorods, nanosheets), large specific surfaces, high sensitivity and low production costs, we chose nanostructured porous films of In(2)O(3) obtained by the sol-gel method, deposited on alumina transducers, with gold (Au) interdigitated electrodes (IDE) and platinum (Pt) heating circuits. Sensitive films contained 10 deposited layers, involving intermediate and final thermal treatments to stabilize the sensitive film. The fabricated sensor was characterized using AFM, SEM, EDX and XRD. The film morphology is complex, containing fibrillar formations and some quasi-spherical conglomerates. The deposited sensitive films are rough, thus favoring gas adsorption. Ozone sensing tests were performed at different temperatures. The highest response of the ozone sensor was recorded at room temperature, considered to be the working temperature for this specific sensor. |
format | Online Article Text |
id | pubmed-10217049 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-102170492023-05-27 Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature Chelu, Mariana Chesler, Paul Hornoiu, Cristian Anastasescu, Mihai Calderon-Moreno, Jose Maria Mitrea, Daiana Brasoveanu, Costin Moldovan, Carmen Gartner, Mariuca Gels Article Detection of greenhouse gases is essential because harmful gases in the air diffuse rapidly over large areas in a short period of time, causing air pollution that will induce climate change with catastrophic consequences over time. Among the materials with favorable morphologies for gas detection (nanofibers, nanorods, nanosheets), large specific surfaces, high sensitivity and low production costs, we chose nanostructured porous films of In(2)O(3) obtained by the sol-gel method, deposited on alumina transducers, with gold (Au) interdigitated electrodes (IDE) and platinum (Pt) heating circuits. Sensitive films contained 10 deposited layers, involving intermediate and final thermal treatments to stabilize the sensitive film. The fabricated sensor was characterized using AFM, SEM, EDX and XRD. The film morphology is complex, containing fibrillar formations and some quasi-spherical conglomerates. The deposited sensitive films are rough, thus favoring gas adsorption. Ozone sensing tests were performed at different temperatures. The highest response of the ozone sensor was recorded at room temperature, considered to be the working temperature for this specific sensor. MDPI 2023-04-23 /pmc/articles/PMC10217049/ /pubmed/37232947 http://dx.doi.org/10.3390/gels9050355 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chelu, Mariana Chesler, Paul Hornoiu, Cristian Anastasescu, Mihai Calderon-Moreno, Jose Maria Mitrea, Daiana Brasoveanu, Costin Moldovan, Carmen Gartner, Mariuca Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature |
title | Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature |
title_full | Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature |
title_fullStr | Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature |
title_full_unstemmed | Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature |
title_short | Chemiresistors with In(2)O(3) Nanostructured Sensitive Films Used for Ozone Detection at Room Temperature |
title_sort | chemiresistors with in(2)o(3) nanostructured sensitive films used for ozone detection at room temperature |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10217049/ https://www.ncbi.nlm.nih.gov/pubmed/37232947 http://dx.doi.org/10.3390/gels9050355 |
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