Porous alpha-Fe2O3 gas sensor with instantaneous attenuated response toward triethylamine and its reaction kinetics
文献类型：期刊论文
| 作者 | Wang, Hong1,2; Luo, Yuanyuan1,2 ; Li, Ke1,2; Liu, Bo1,2; Gao, Lei1,2; Duan, Guotao3
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2022 |
| 卷号 | 427 |
| ISSN号 | 1385-8947 |
| 关键词 | Triethylamine Gas sensor Specific response Attenuation |
| DOI | 10.1016/j.cej.2021.131631 |
| 通讯作者 | Duan, Guotao(duang1@hust.edu.cn) |
| 英文摘要 | To achieve highly selective and rapid detection of triethylamine (TEA) at a relatively low temperature remains challenging. In this work, we report an ultrasensitive TEA gas sensor with a specific response based on the porous alpha-Fe2O3 hollow sphere array, which shell is composed of fusiform particles. At a low operating temperature (160 degrees C), the sensor shows high response (75.8) toward 10 ppm TEA with a short response time (2 s) and can detect TEA as low as 50 ppb. More importantly, an obvious attenuation characteristic is observed during TEA detection. This distinctive response toward TEA gas is repeatable when the operating temperature is over a threshold (>120 degrees C). Moreover, the instantaneous attenuated response is found to be independent of the gas concentration and humidity but much related to specific gases, demonstrating its potential to be used as a characteristic signal to achieve highly selective detection of TEA molecules. Furthermore, based on density functional theory (DFT) calculations, the attenuated response can be ascribed to a special surface dynamic reaction process involving the thermal decomposition of TEA molecules and the formation of nitrogen oxides, which is verified by the quasi in-situ X-ray photoelectron spectroscopy analysis. This work will provide a new idea for developing highly selective and sensitive sensors. |
| WOS关键词 | SENSING PROPERTIES ; NANOSTRUCTURES ; TEMPERATURE ; FABRICATION |
| 资助项目 | National Key R&D Program of China[2020YFB2008701] ; Natural Science Foundation of China[11674320] ; Natural Science Foundation for Young Scientists of China[51802309] ; Natural Science Foundation for Young Scientists of China[62001178] ; Anhui Provincial Natural Science Foundation[1808085ME137] ; Post-doctoral innovative research post in Hubei Province[0106182068] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000729592400004 |
| 资助机构 | National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation for Young Scientists of China ; Anhui Provincial Natural Science Foundation ; Post-doctoral innovative research post in Hubei Province |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126410]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Duan, Guotao |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol,HFIPS, Hefei 230031, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hong,Luo, Yuanyuan,Li, Ke,et al. Porous alpha-Fe2O3 gas sensor with instantaneous attenuated response toward triethylamine and its reaction kinetics[J]. CHEMICAL ENGINEERING JOURNAL,2022,427. |
| APA | Wang, Hong,Luo, Yuanyuan,Li, Ke,Liu, Bo,Gao, Lei,&Duan, Guotao.(2022).Porous alpha-Fe2O3 gas sensor with instantaneous attenuated response toward triethylamine and its reaction kinetics.CHEMICAL ENGINEERING JOURNAL,427. |
| MLA | Wang, Hong,et al."Porous alpha-Fe2O3 gas sensor with instantaneous attenuated response toward triethylamine and its reaction kinetics".CHEMICAL ENGINEERING JOURNAL 427(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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