Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite
Triethylamine (TEA), a volatile organic compound (VOC), has important applications in industrial production. However, TEA has an irritating odor and potential toxicity, making it necessary to develop sensitive TEA gas sensors with high efficiency. This study focused on preparing LaFeO<sub>3<...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2227-9040/13/7/228 |
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| author | Hong Wu Xiaobing Wang Yuxiang Chen Xiaofeng Wang |
| author_facet | Hong Wu Xiaobing Wang Yuxiang Chen Xiaofeng Wang |
| author_sort | Hong Wu |
| collection | DOAJ |
| description | Triethylamine (TEA), a volatile organic compound (VOC), has important applications in industrial production. However, TEA has an irritating odor and potential toxicity, making it necessary to develop sensitive TEA gas sensors with high efficiency. This study focused on preparing LaFeO<sub>3</sub> nanoparticles modified by SnS<sub>2</sub> nanosheets (SnS<sub>2</sub>/LaFeO<sub>3</sub> composite) using a hydrothermal method together with sol–gel technique. According to the comparison results of the gas-sensing performance between pure LaFeO<sub>3</sub> and SnS<sub>2</sub>/LaFeO<sub>3</sub> composite with varying composition ratios, 5% SnS<sub>2</sub>/LaFeO<sub>3</sub> sensor had a sensitivity for TEA that was 3.2 times higher than pure LaFeO<sub>3</sub> sensor. The optimized sensor operates at 140 °C and demonstrates strong stability, selectivity, and long-term durability. Detailed analyses revealed that the SnS<sub>2</sub> nanosheets enhanced oxygen vacancy (O<sub>V</sub>) content and carrier mobility through heterojunction formation with LaFeO<sub>3</sub>. This study provides insights into improving gas-sensing performance via p-n heterostructure design and proposes a novel LaFeO<sub>3</sub>-based material for TEA detection. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-06-01 |
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| spelling | doaj-art-8dea0d67de104ac48cafd8ebda174b7c2025-08-20T03:35:37ZengMDPI AGChemosensors2227-90402025-06-0113722810.3390/chemosensors13070228Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> CompositeHong Wu0Xiaobing Wang1Yuxiang Chen2Xiaofeng Wang3School of General Education, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin 124221, ChinaSchool of Chemical Engineering, Ocean and Life Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin 124221, ChinaSchool of Chemical Engineering, Ocean and Life Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin 124221, ChinaSchool of General Education, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin 124221, ChinaTriethylamine (TEA), a volatile organic compound (VOC), has important applications in industrial production. However, TEA has an irritating odor and potential toxicity, making it necessary to develop sensitive TEA gas sensors with high efficiency. This study focused on preparing LaFeO<sub>3</sub> nanoparticles modified by SnS<sub>2</sub> nanosheets (SnS<sub>2</sub>/LaFeO<sub>3</sub> composite) using a hydrothermal method together with sol–gel technique. According to the comparison results of the gas-sensing performance between pure LaFeO<sub>3</sub> and SnS<sub>2</sub>/LaFeO<sub>3</sub> composite with varying composition ratios, 5% SnS<sub>2</sub>/LaFeO<sub>3</sub> sensor had a sensitivity for TEA that was 3.2 times higher than pure LaFeO<sub>3</sub> sensor. The optimized sensor operates at 140 °C and demonstrates strong stability, selectivity, and long-term durability. Detailed analyses revealed that the SnS<sub>2</sub> nanosheets enhanced oxygen vacancy (O<sub>V</sub>) content and carrier mobility through heterojunction formation with LaFeO<sub>3</sub>. This study provides insights into improving gas-sensing performance via p-n heterostructure design and proposes a novel LaFeO<sub>3</sub>-based material for TEA detection.https://www.mdpi.com/2227-9040/13/7/228LaFeO<sub>3</sub> nanoparticlesSnS<sub>2</sub> nanosheetsp-n heterojunctiongas sensor |
| spellingShingle | Hong Wu Xiaobing Wang Yuxiang Chen Xiaofeng Wang Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite Chemosensors LaFeO<sub>3</sub> nanoparticles SnS<sub>2</sub> nanosheets p-n heterojunction gas sensor |
| title | Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite |
| title_full | Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite |
| title_fullStr | Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite |
| title_full_unstemmed | Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite |
| title_short | Enhanced Triethylamine-Sensing Characteristics of SnS<sub>2</sub>/LaFeO<sub>3</sub> Composite |
| title_sort | enhanced triethylamine sensing characteristics of sns sub 2 sub lafeo sub 3 sub composite |
| topic | LaFeO<sub>3</sub> nanoparticles SnS<sub>2</sub> nanosheets p-n heterojunction gas sensor |
| url | https://www.mdpi.com/2227-9040/13/7/228 |
| work_keys_str_mv | AT hongwu enhancedtriethylaminesensingcharacteristicsofsnssub2sublafeosub3subcomposite AT xiaobingwang enhancedtriethylaminesensingcharacteristicsofsnssub2sublafeosub3subcomposite AT yuxiangchen enhancedtriethylaminesensingcharacteristicsofsnssub2sublafeosub3subcomposite AT xiaofengwang enhancedtriethylaminesensingcharacteristicsofsnssub2sublafeosub3subcomposite |