Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine
Despite their high surface reactivity, the gas sensor based on Co3O4 nanoparticles frequently suffers from a low response to volatile organic compounds (VOCs) due to high-temperature sintering and inefficient resistance modulation. Herein, halloysite nanotubes (HNTs) were incorporated as the additiv...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423001436 |
| _version_ | 1797858835692519424 |
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| author | Jie Fan Chao Yang Xueying Zhao Dan Li Feng Xiao Ronglan Wu Lu Wang |
| author_facet | Jie Fan Chao Yang Xueying Zhao Dan Li Feng Xiao Ronglan Wu Lu Wang |
| author_sort | Jie Fan |
| collection | DOAJ |
| description | Despite their high surface reactivity, the gas sensor based on Co3O4 nanoparticles frequently suffers from a low response to volatile organic compounds (VOCs) due to high-temperature sintering and inefficient resistance modulation. Herein, halloysite nanotubes (HNTs) were incorporated as the additive into the Co3O4 nanoparticle matrix to enhance the sensing property toward VOCs in terms of gas response (Rg/Ra) and operation stability. Co3O4 nanoparticles intimately attached on HNTs were achieved by a facile deposition-precipitation method followed by calcination. The best-performing Co3O4/0.3HNTs-based sensor had a high gas response of 22.9 to 50 ppm triethylamine at 240 °C, which was 4.9 times than that of Co3O4 alone. The enhanced sensitivity could be attributed to the HNT incorporation that facilitated effective resistance modulation, surface property tuning, as well as surface defect formation. These results bring new insight into an enhancement of gas sensing property of a p-type metal oxide with insensitive materials. They also provide a potential to expand the application of aluminosilicate clays to gas sensors. |
| first_indexed | 2024-04-09T21:19:47Z |
| format | Article |
| id | doaj.art-b56928805c184779a6392ef7ad21df96 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:19:47Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b56928805c184779a6392ef7ad21df962023-03-28T06:46:21ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012324912503Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamineJie Fan0Chao Yang1Xueying Zhao2Dan Li3Feng Xiao4Ronglan Wu5Lu Wang6Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, ChinaKey Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, China; State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Xinjiang University, Urumqi 830017, China; Corresponding author. Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, China.Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, ChinaKey Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, ChinaKey Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, ChinaKey Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, China; State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Xinjiang University, Urumqi 830017, ChinaKey Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering, Xinjiang University, Urumqi 830017, China; State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Xinjiang University, Urumqi 830017, ChinaDespite their high surface reactivity, the gas sensor based on Co3O4 nanoparticles frequently suffers from a low response to volatile organic compounds (VOCs) due to high-temperature sintering and inefficient resistance modulation. Herein, halloysite nanotubes (HNTs) were incorporated as the additive into the Co3O4 nanoparticle matrix to enhance the sensing property toward VOCs in terms of gas response (Rg/Ra) and operation stability. Co3O4 nanoparticles intimately attached on HNTs were achieved by a facile deposition-precipitation method followed by calcination. The best-performing Co3O4/0.3HNTs-based sensor had a high gas response of 22.9 to 50 ppm triethylamine at 240 °C, which was 4.9 times than that of Co3O4 alone. The enhanced sensitivity could be attributed to the HNT incorporation that facilitated effective resistance modulation, surface property tuning, as well as surface defect formation. These results bring new insight into an enhancement of gas sensing property of a p-type metal oxide with insensitive materials. They also provide a potential to expand the application of aluminosilicate clays to gas sensors.http://www.sciencedirect.com/science/article/pii/S2238785423001436Gas sensorsNanocompositeP-type metal oxideClayVolatile organic compounds |
| spellingShingle | Jie Fan Chao Yang Xueying Zhao Dan Li Feng Xiao Ronglan Wu Lu Wang Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine Journal of Materials Research and Technology Gas sensors Nanocomposite P-type metal oxide Clay Volatile organic compounds |
| title | Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine |
| title_full | Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine |
| title_fullStr | Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine |
| title_full_unstemmed | Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine |
| title_short | Enhanced gas sensing property of Co3O4 matrix nanocomposites with halloysite nanotubes toward triethylamine |
| title_sort | enhanced gas sensing property of co3o4 matrix nanocomposites with halloysite nanotubes toward triethylamine |
| topic | Gas sensors Nanocomposite P-type metal oxide Clay Volatile organic compounds |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423001436 |
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