Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2
This work focuses on the synthesis and gas sensing properties of ZnO nanowalls (ZnO NWLs) grown by a simple cheap chemical bath deposition method on a thin layer of aluminum (about 20 nm thick) printed on the Pt interdigitated electrodes area of conductometric alumina platforms. Post-deposition anne...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-07-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/5/3/20 |
| _version_ | 1819007092998012928 |
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| author | Elena Bruno Vincenzina Strano Salvo Mirabella Nicola Donato Salvatore Gianluca Leonardi Giovanni Neri |
| author_facet | Elena Bruno Vincenzina Strano Salvo Mirabella Nicola Donato Salvatore Gianluca Leonardi Giovanni Neri |
| author_sort | Elena Bruno |
| collection | DOAJ |
| description | This work focuses on the synthesis and gas sensing properties of ZnO nanowalls (ZnO NWLs) grown by a simple cheap chemical bath deposition method on a thin layer of aluminum (about 20 nm thick) printed on the Pt interdigitated electrodes area of conductometric alumina platforms. Post-deposition annealing in nitrogen atmosphere at 300 °C enabled the formation of a ZnO intertwined 2D foils network. A wide characterization was carried out to investigate the composition, morphology and microstructure of the nanowalls layer formed. The gas sensing properties of the films were studied by measuring the changes of electrical resistance upon exposure to low concentrations of carbon monoxide (CO) and nitrogen dioxide (NO2) in air. The sensor response to CO or NO2 was found to be strongly dependent on the operating temperature, providing a means to tailor the sensitivity and selectivity toward these selected target gases. |
| first_indexed | 2024-12-21T00:19:05Z |
| format | Article |
| id | doaj.art-86387bfd0c8545c8863678cd08858616 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-12-21T00:19:05Z |
| publishDate | 2017-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-86387bfd0c8545c8863678cd088586162022-12-21T19:22:09ZengMDPI AGChemosensors2227-90402017-07-01532010.3390/chemosensors5030020chemosensors5030020Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2Elena Bruno0Vincenzina Strano1Salvo Mirabella2Nicola Donato3Salvatore Gianluca Leonardi4Giovanni Neri5MATIS IMM-CNR and Department of Physics and Astronomy, University of Catania, Via S. Sofia 64, 95123 Catania, ItalyMATIS IMM-CNR and Department of Physics and Astronomy, University of Catania, Via S. Sofia 64, 95123 Catania, ItalyMATIS IMM-CNR and Department of Physics and Astronomy, University of Catania, Via S. Sofia 64, 95123 Catania, ItalyDepartment of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, ItalyDepartment of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, ItalyDepartment of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, ItalyThis work focuses on the synthesis and gas sensing properties of ZnO nanowalls (ZnO NWLs) grown by a simple cheap chemical bath deposition method on a thin layer of aluminum (about 20 nm thick) printed on the Pt interdigitated electrodes area of conductometric alumina platforms. Post-deposition annealing in nitrogen atmosphere at 300 °C enabled the formation of a ZnO intertwined 2D foils network. A wide characterization was carried out to investigate the composition, morphology and microstructure of the nanowalls layer formed. The gas sensing properties of the films were studied by measuring the changes of electrical resistance upon exposure to low concentrations of carbon monoxide (CO) and nitrogen dioxide (NO2) in air. The sensor response to CO or NO2 was found to be strongly dependent on the operating temperature, providing a means to tailor the sensitivity and selectivity toward these selected target gases.https://www.mdpi.com/2227-9040/5/3/20ZnOnanowallsconductometric sensorCO sensorNO2 sensor |
| spellingShingle | Elena Bruno Vincenzina Strano Salvo Mirabella Nicola Donato Salvatore Gianluca Leonardi Giovanni Neri Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2 Chemosensors ZnO nanowalls conductometric sensor CO sensor NO2 sensor |
| title | Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2 |
| title_full | Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2 |
| title_fullStr | Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2 |
| title_full_unstemmed | Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2 |
| title_short | Comparison of the Sensing Properties of ZnO Nanowalls-Based Sensors toward Low Concentrations of CO and NO2 |
| title_sort | comparison of the sensing properties of zno nanowalls based sensors toward low concentrations of co and no2 |
| topic | ZnO nanowalls conductometric sensor CO sensor NO2 sensor |
| url | https://www.mdpi.com/2227-9040/5/3/20 |
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