Ce doped SnO/SnO2 heterojunctions for highly formaldehyde gas sensing at low temperature
文献类型：期刊论文
| 作者 | Fan, Guijun1,2,3; Nie, Linfeng1,2; Wang, Hang1,4; Zhang, Le1,2,3; Chai, Shaohua1,2,3; Wang, Anqi1,2,3; Guan, Jian1,2,3; Han, Ning1,2,3; Chen, Yunfa1,2,3 |
| 刊名 | SENSORS AND ACTUATORS B-CHEMICAL
 |
| 出版日期 | 2022-12-15 |
| 卷号 | 373页码:7 |
| 关键词 | Semiconductor gas sensor Hydrothermal synthesis Formaldehyde Ce dopedSnO SnO2 In-situ infrared spectroscopy |
| DOI | 10.1016/j.snb.2022.132640 |
| 英文摘要 | Highly sensitive and selective detection of formaldehyde is of great significance for indoor air quality. In this work, semiconductor gas sensors with high response have been successfully fabricated based on hydrothermally synthesized Ce doped SnO/SnO2 nanocomposites. Gas sensing performance measurements show that the response has increased by 20 times compared with the undoped samples. In specific, the response is 22.4 toward 5 ppm HCHO at 160 degrees C, the response and recovery time are about 124 and 54 s, the detection limit is 70 ppb, and the selectivity over typical interfering gases such as methanol, ethanol, isopropanol and acetone is good. The improvement of gas sensing performance can be ascribed to the synergetic effect of higher surface area and more chemisorbed oxygen which comes from the addition of Ce and the p-n heterojunction formed between SnO and SnO2. The involved mechanism is investigated by in-situ infrared reflectance spectroscopy where abundant in-termediates of HCHOO, HCOO- and CO32-are observed. It is expected that the proposed Ce doped SnO/SnO2 based sensor can make a good reference for the development of high-performance gas sensors. |
| WOS关键词 | HIGH RESPONSE ; SNO2 ; SENSOR ; PERFORMANCE ; SELECTIVITY ; NANOSHEETS ; OXIDATION ; ACETONE |
| 资助项目 | National Key Research and Develop-ment Program of China ; [2016YFC0207100] |
| WOS研究方向 | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000876020500003 |
| 资助机构 | National Key Research and Develop-ment Program of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55397]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Han, Ning; Chen, Yunfa |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Coll Chem Engn, Beijing 100049, Peoples R China 3.Inst Proc Engn, Chinese Acad Sci, Key Lab Sci & Technol Particle Mat, Beijing 100190, Peoples R China 4.Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Guijun,Nie, Linfeng,Wang, Hang,et al. Ce doped SnO/SnO2 heterojunctions for highly formaldehyde gas sensing at low temperature[J]. SENSORS AND ACTUATORS B-CHEMICAL,2022,373:7. |
| APA | Fan, Guijun.,Nie, Linfeng.,Wang, Hang.,Zhang, Le.,Chai, Shaohua.,...&Chen, Yunfa.(2022).Ce doped SnO/SnO2 heterojunctions for highly formaldehyde gas sensing at low temperature.SENSORS AND ACTUATORS B-CHEMICAL,373,7. |
| MLA | Fan, Guijun,et al."Ce doped SnO/SnO2 heterojunctions for highly formaldehyde gas sensing at low temperature".SENSORS AND ACTUATORS B-CHEMICAL 373(2022):7. |
入库方式： OAI收割
来源：过程工程研究所
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