Towards Selective and Sensitive Detection of Carbon Monoxide with CuO/ZnO Heterojunction NanocompositePrepared by an Organometallic Approach
| العنوان: | Towards Selective and Sensitive Detection of Carbon Monoxide with CuO/ZnO Heterojunction NanocompositePrepared by an Organometallic Approach |
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| المؤلفون: | Jońca, Justyna, Fajerwerg, Katia, Kahn, Myrtil, Menini, Philippe, Sówka, Izabela, Fau, Pierre |
| المساهمون: | Wroclaw University of Science and Technology, Laboratoire de chimie de coordination (LCC), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Équipe MICrosystèmes d'Analyse (LAAS-MICA), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Laboratoire de physique et chimie des nano-objets (LPCNO), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Fédération de recherche « Matière et interactions » (FeRMI), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grantagreement No 101033564 |
| المصدر: | Sensors & Transducers Journal Sensors & Transducers Journal, 2022, 259 (5), pp.99-108 |
| بيانات النشر: | HAL CCSD, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | CuO/ZnO nanocomposite, Organometallic approach CuO/ZnO nanocomposite Heterojunction MOS gas sensors, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Heterojunction, Organometallic approach, MOS gas sensors |
| الوصف: | International audience; Nanometer size p-n heterojunction has been created from CuO and ZnO anisotropic nanoparticles prepared by a one-pot organometallic approach. The method is based on the hydrolysis or oxidation of an adequate metal-organic precursors in pure octylamine. The CuO and ZnO nanostructures were dispersed in ethanol and then, mixed at different mass ratios, i.e. CuO(75%)/ZnO(25%), CuO(50%)/ZnO(50%) and CuO(25%)/ZnO(75%). Finally, the CuO and ZnO suspensions and their mixtures were deposited on miniaturized gas sensors substrates by an ink-jet printing method and heated up gradually to 550 oC in ambient air. Then, the as-prepared sensors have been exposed to CO (100 ppm), C3H8 (100 ppm) and NH3 (5 ppm) at different working temperatures (from 75 oC to 400 oC) and under 50 % of relative humidity (RH). Among all prepared sensors the one based on the mixture of CuO (75 %) and ZnO (25 %) presents a very sensitive and selective response to CO. Indeed, at the operating temperature of 165 oC, a high sensitivity towards CO was obtained (SCO=624 %). In these conditions, the sensor exhibited low sensitivity to other tested gases (KCO/C3H8= 14.5 and KCO/NH3= 26) but its response time was quite long (t90=2.3 min) and the recovery was very sluggish (t10>20 min). Therefore, it was better to increase the working temperature up to 300 oC. Although the sensitivity and selectivity towards CO worsened (SCO=177%, KCO/C3H8= 4.7 and KCO/NH3= 9.8) the response/recovery time decreased to 50 s/4.5 min. The gas sensing performances of the CuO(75%)/ZnO(25%) composite was attributed to both high surface to volume ratio of the prepared nanostructures and the p-n heterojunction established between the CuO and ZnO nanoparticles. |
| اللغة: | English |
| تدمد: | 1726-5479 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=od______4074::10c8f07b3927f8631b1f99967b725b2a https://hal.science/hal-03991893 |
| رقم الأكسشن: | edsair.od......4074..10c8f07b3927f8631b1f99967b725b2a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17265479 |
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