A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite
A tin oxide (SnO<sub>2</sub>) and reduced graphene oxide (rGO) hybrid composite gas sensor for high-performance carbon dioxide (CO<sub>2</sub>) gas detection at room temperature was studied. Since it can be used independently from a heater, it emerges as a promising candidate...
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MDPI AG
2021-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/3/522 |
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| author | Zhi Yan Lee Huzein Fahmi bin Hawari Gunawan Witjaksono bin Djaswadi Kamarulzaman Kamarudin |
| author_facet | Zhi Yan Lee Huzein Fahmi bin Hawari Gunawan Witjaksono bin Djaswadi Kamarulzaman Kamarudin |
| author_sort | Zhi Yan Lee |
| collection | DOAJ |
| description | A tin oxide (SnO<sub>2</sub>) and reduced graphene oxide (rGO) hybrid composite gas sensor for high-performance carbon dioxide (CO<sub>2</sub>) gas detection at room temperature was studied. Since it can be used independently from a heater, it emerges as a promising candidate for reducing the complexity of device circuitry, packaging size, and fabrication cost; furthermore, it favors integration into portable devices with a low energy density battery. In this study, SnO<sub>2</sub>-rGO was prepared via an in-situ chemical reduction route. Dedicated material characterization techniques including field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) were conducted. The gas sensor based on the synthesized hybrid composite was successfully tested over a wide range of carbon dioxide concentrations where it exhibited excellent response magnitudes, good linearity, and low detection limit. The synergistic effect can explain the obtained hybrid gas sensor’s prominent sensing properties between SnO<sub>2</sub> and rGO that provide excellent charge transport capability and an abundance of sensing sites. |
| first_indexed | 2024-03-09T04:01:04Z |
| format | Article |
| id | doaj.art-038f721e4c4044a59827236732ba932c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T04:01:04Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-038f721e4c4044a59827236732ba932c2023-12-03T14:13:27ZengMDPI AGMaterials1996-19442021-01-0114352210.3390/ma14030522A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid CompositeZhi Yan Lee0Huzein Fahmi bin Hawari1Gunawan Witjaksono bin Djaswadi2Kamarulzaman Kamarudin3Department of Electrical and Electronics Engineering, Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, MalaysiaDepartment of Electrical and Electronics Engineering, Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, MalaysiaDepartment of Electrical and Electronics Engineering, Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, MalaysiaSchool of Mechatronics Engineering, Universiti Malaysia Perlis (UniMAP), Kangar 01000, MalaysiaA tin oxide (SnO<sub>2</sub>) and reduced graphene oxide (rGO) hybrid composite gas sensor for high-performance carbon dioxide (CO<sub>2</sub>) gas detection at room temperature was studied. Since it can be used independently from a heater, it emerges as a promising candidate for reducing the complexity of device circuitry, packaging size, and fabrication cost; furthermore, it favors integration into portable devices with a low energy density battery. In this study, SnO<sub>2</sub>-rGO was prepared via an in-situ chemical reduction route. Dedicated material characterization techniques including field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) were conducted. The gas sensor based on the synthesized hybrid composite was successfully tested over a wide range of carbon dioxide concentrations where it exhibited excellent response magnitudes, good linearity, and low detection limit. The synergistic effect can explain the obtained hybrid gas sensor’s prominent sensing properties between SnO<sub>2</sub> and rGO that provide excellent charge transport capability and an abundance of sensing sites.https://www.mdpi.com/1996-1944/14/3/522SnO<sub>2</sub>-rGO hybrid compositechemoresistive gas sensorCO<sub>2</sub>room temperature operationdetection limit |
| spellingShingle | Zhi Yan Lee Huzein Fahmi bin Hawari Gunawan Witjaksono bin Djaswadi Kamarulzaman Kamarudin A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite Materials SnO<sub>2</sub>-rGO hybrid composite chemoresistive gas sensor CO<sub>2</sub> room temperature operation detection limit |
| title | A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite |
| title_full | A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite |
| title_fullStr | A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite |
| title_full_unstemmed | A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite |
| title_short | A Highly Sensitive Room Temperature CO<sub>2</sub> Gas Sensor Based on SnO<sub>2</sub>-rGO Hybrid Composite |
| title_sort | highly sensitive room temperature co sub 2 sub gas sensor based on sno sub 2 sub rgo hybrid composite |
| topic | SnO<sub>2</sub>-rGO hybrid composite chemoresistive gas sensor CO<sub>2</sub> room temperature operation detection limit |
| url | https://www.mdpi.com/1996-1944/14/3/522 |
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