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Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism
NO(2) is one of the main greenhouse gases, which is mainly generated by the combustion of fossil fuels. In addition to its contribution to global warming, this gas is also directly dangerous to humans. The present work reports the structural and gas sensing properties of the CaCu(3)Ti(4)O(12) compou...
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/PMC10179786/ https://www.ncbi.nlm.nih.gov/pubmed/37176271 http://dx.doi.org/10.3390/ma16093390 |
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author | Espinoza-González, Rodrigo Caamaño, Josefa Castillo, Ximena Orlandi, Marcelo O. Felix, Anderson A. Flores, Marcos Blanco, Adriana Castro-Castillo, Carmen Gracia, Francisco |
author_facet | Espinoza-González, Rodrigo Caamaño, Josefa Castillo, Ximena Orlandi, Marcelo O. Felix, Anderson A. Flores, Marcos Blanco, Adriana Castro-Castillo, Carmen Gracia, Francisco |
author_sort | Espinoza-González, Rodrigo |
collection | PubMed |
description | NO(2) is one of the main greenhouse gases, which is mainly generated by the combustion of fossil fuels. In addition to its contribution to global warming, this gas is also directly dangerous to humans. The present work reports the structural and gas sensing properties of the CaCu(3)Ti(4)O(12) compound prepared by the sol-gel technique. Rietveld refinement confirmed the formation of the pseudo-cubic CaCu(3)Ti(4)O(12) compound, with less than 4 wt% of the secondary phases. The microstructural and elemental composition analysis were carried out using scanning electron microscopy and X-ray energy dispersive spectroscopy, respectively, while the elemental oxidation states of the samples were determined by X-ray photoelectron spectroscopy. The gas sensing response of the samples was performed for different concentrations of NO(2), H(2), CO, C(2)H(2) and C(2)H(4) at temperatures between 100 and 300 °C. The materials exhibited selectivity for NO(2), showing a greater sensor signal at 250 °C, which was correlated with the highest concentration of nitrite and nitrate species on the CCTO surface using DRIFT spectroscopy. |
format | Online Article Text |
id | pubmed-10179786 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101797862023-05-13 Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism Espinoza-González, Rodrigo Caamaño, Josefa Castillo, Ximena Orlandi, Marcelo O. Felix, Anderson A. Flores, Marcos Blanco, Adriana Castro-Castillo, Carmen Gracia, Francisco Materials (Basel) Article NO(2) is one of the main greenhouse gases, which is mainly generated by the combustion of fossil fuels. In addition to its contribution to global warming, this gas is also directly dangerous to humans. The present work reports the structural and gas sensing properties of the CaCu(3)Ti(4)O(12) compound prepared by the sol-gel technique. Rietveld refinement confirmed the formation of the pseudo-cubic CaCu(3)Ti(4)O(12) compound, with less than 4 wt% of the secondary phases. The microstructural and elemental composition analysis were carried out using scanning electron microscopy and X-ray energy dispersive spectroscopy, respectively, while the elemental oxidation states of the samples were determined by X-ray photoelectron spectroscopy. The gas sensing response of the samples was performed for different concentrations of NO(2), H(2), CO, C(2)H(2) and C(2)H(4) at temperatures between 100 and 300 °C. The materials exhibited selectivity for NO(2), showing a greater sensor signal at 250 °C, which was correlated with the highest concentration of nitrite and nitrate species on the CCTO surface using DRIFT spectroscopy. MDPI 2023-04-26 /pmc/articles/PMC10179786/ /pubmed/37176271 http://dx.doi.org/10.3390/ma16093390 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 Espinoza-González, Rodrigo Caamaño, Josefa Castillo, Ximena Orlandi, Marcelo O. Felix, Anderson A. Flores, Marcos Blanco, Adriana Castro-Castillo, Carmen Gracia, Francisco Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism |
title | Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism |
title_full | Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism |
title_fullStr | Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism |
title_full_unstemmed | Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism |
title_short | Selective NO(2) Detection of CaCu(3)Ti(4)O(12) Ceramic Prepared by the Sol-Gel Technique and DRIFT Measurements to Elucidate the Gas Sensing Mechanism |
title_sort | selective no(2) detection of cacu(3)ti(4)o(12) ceramic prepared by the sol-gel technique and drift measurements to elucidate the gas sensing mechanism |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179786/ https://www.ncbi.nlm.nih.gov/pubmed/37176271 http://dx.doi.org/10.3390/ma16093390 |
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