Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours
In this work, the gas-sensing functionality of porous ceramic bodies formed by the slip casting technique was studied using perovskite nanoparticles of an MSnO<sub>3</sub> system (M = Ba, Ca, Zn) synthesized by a chemical route. The performance and reliability of the sensitive materials...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/9/2889 |
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| author | Yasser H. Ochoa-Muñoz Ruby Mejía de Gutiérrez Jorge E. Rodríguez-Páez Isabel Gràcia Stella Vallejos |
| author_facet | Yasser H. Ochoa-Muñoz Ruby Mejía de Gutiérrez Jorge E. Rodríguez-Páez Isabel Gràcia Stella Vallejos |
| author_sort | Yasser H. Ochoa-Muñoz |
| collection | DOAJ |
| description | In this work, the gas-sensing functionality of porous ceramic bodies formed by the slip casting technique was studied using perovskite nanoparticles of an MSnO<sub>3</sub> system (M = Ba, Ca, Zn) synthesized by a chemical route. The performance and reliability of the sensitive materials in the presence of different volatile organic compounds (acetone, ethanol, and toluene), and other gases (CO, H<sub>2</sub> and NO<sub>2</sub>) were analysed. The ZnSnO<sub>3</sub>, BaSnO<sub>3</sub>, and CaSnO<sub>3</sub> sensors showed sensitivities of 40, 16, and 8% ppm<sup>−1</sup> towards acetone, ethanol, and toluene vapours, respectively. Good repeatability and selectivity were also observed for these gaseous analytes, as well as excellent stability for a period of 120 days. The shortest response times were recorded for the ZnSnO<sub>3</sub> sensors (e.g., 4 s for 80 ppm acetone) with marked responses to low concentrations of acetone (1000 ppb). These results are attributed to the porosity of the sensitive materials, which favours the diffusion of gases, induces surface defects, and provides greater surface area and good sensitivity to acetone, as is seen in the case of ZnSnO<sub>3</sub>. |
| first_indexed | 2024-03-10T03:53:52Z |
| format | Article |
| id | doaj.art-99cefeee500645e6816d023b9f841bc3 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T03:53:52Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-99cefeee500645e6816d023b9f841bc32023-11-23T08:51:11ZengMDPI AGMolecules1420-30492022-04-01279288910.3390/molecules27092889Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene VapoursYasser H. Ochoa-Muñoz0Ruby Mejía de Gutiérrez1Jorge E. Rodríguez-Páez2Isabel Gràcia3Stella Vallejos4Composites Materials Group (GMC-CENM), Universidad del Valle, Cali 76001, ColombiaComposites Materials Group (GMC-CENM), Universidad del Valle, Cali 76001, ColombiaCYTEMAC Group, Universidad del Cauca, Popayán 190003, ColombiaInstitute of Microelectronics of Barcelona (IMB-CNM, CSIC), 08193 Bellaterra, SpainInstitute of Microelectronics of Barcelona (IMB-CNM, CSIC), 08193 Bellaterra, SpainIn this work, the gas-sensing functionality of porous ceramic bodies formed by the slip casting technique was studied using perovskite nanoparticles of an MSnO<sub>3</sub> system (M = Ba, Ca, Zn) synthesized by a chemical route. The performance and reliability of the sensitive materials in the presence of different volatile organic compounds (acetone, ethanol, and toluene), and other gases (CO, H<sub>2</sub> and NO<sub>2</sub>) were analysed. The ZnSnO<sub>3</sub>, BaSnO<sub>3</sub>, and CaSnO<sub>3</sub> sensors showed sensitivities of 40, 16, and 8% ppm<sup>−1</sup> towards acetone, ethanol, and toluene vapours, respectively. Good repeatability and selectivity were also observed for these gaseous analytes, as well as excellent stability for a period of 120 days. The shortest response times were recorded for the ZnSnO<sub>3</sub> sensors (e.g., 4 s for 80 ppm acetone) with marked responses to low concentrations of acetone (1000 ppb). These results are attributed to the porosity of the sensitive materials, which favours the diffusion of gases, induces surface defects, and provides greater surface area and good sensitivity to acetone, as is seen in the case of ZnSnO<sub>3</sub>.https://www.mdpi.com/1420-3049/27/9/2889gas sensorsperovskitesporous ceramicZnSnO<sub>3</sub>BaSnO<sub>3</sub>CaSnO<sub>3</sub> |
| spellingShingle | Yasser H. Ochoa-Muñoz Ruby Mejía de Gutiérrez Jorge E. Rodríguez-Páez Isabel Gràcia Stella Vallejos Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours Molecules gas sensors perovskites porous ceramic ZnSnO<sub>3</sub> BaSnO<sub>3</sub> CaSnO<sub>3</sub> |
| title | Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours |
| title_full | Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours |
| title_fullStr | Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours |
| title_full_unstemmed | Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours |
| title_short | Gas Sensors Based on Porous Ceramic Bodies of MSnO<sub>3</sub> Perovskites (M = Ba, Ca, Zn): Formation and Sensing Properties towards Ethanol, Acetone, and Toluene Vapours |
| title_sort | gas sensors based on porous ceramic bodies of msno sub 3 sub perovskites m ba ca zn formation and sensing properties towards ethanol acetone and toluene vapours |
| topic | gas sensors perovskites porous ceramic ZnSnO<sub>3</sub> BaSnO<sub>3</sub> CaSnO<sub>3</sub> |
| url | https://www.mdpi.com/1420-3049/27/9/2889 |
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