High-sensitivity low-power tungsten doped niobium oxide nanorods sensor for nitrogen dioxide air pollution monitoring
文献类型：期刊论文
| 作者 | Yu, j1; Cheung, K. W.1; Yan, W. H. A.1; Li, Y. X. B.2; Ho, D.1 |
| 刊名 | SENSORS AND ACTUATORS B-CHEMICAL
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 238页码:204-213 |
| 关键词 | Niobium oxide Tungsten oxide Nitrogen dioxide Gas sensor Environmental sensor Nanostructure Hydrothermal synthesis Nanorod Interface |
| 英文摘要 | The accurate sensing of air pollutants such as nitrous oxide gas (NOx) has wide medical and industrial applications. For conventional polycrystalline film based sensors, achieving adequate sensitivity, especially at room temperature, still remains a challenge. In this paper, we present an investigation on the hydrothermal synthesis, device fabrication, and electronic properties, and NO2 gas sensing performance of tungsten doped niobium oxide nanorods. The gas sensing capability of metal oxide nanorods can be significantly improved through doping, as the increase in electron density at the material surface results in a significant impedance change upon the presence of adsorbates. Results indicate that exposure to 9.9 ppm of NO2 gas at 25 degrees C causes sensor outputs of 0.33 V and 3.4 V for 1 mu A and 10 mu A biases, respectively. For a 100 mu A bias, the response at 410 degrees C and 450 degrees C demonstrated outputs of 16.1 V and 12.2 V, respectively. Compared to the recent literature, the nanorod sensor demonstrated a several orders-of-magnitude improvement in voltage response toward ppb-level NO2 gas under both room temperature (25 degrees C) and elevated temperature (450 degrees C), while keeping power consumption at the microwatt level. Such low powered operation enables the ubiquitous deployment of compact, portable and maintenance-free environmental sensors. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation |
| 研究领域[WOS] | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
| 关键词[WOS] | SEMICONDUCTOR GAS SENSORS ; THIN-FILMS ; NO2 SENSOR ; NB2O5 NANOWIRES ; CHARGE-TRANSFER ; TANTALUM OXIDE ; NANOSTRUCTURES ; NANOTUBES ; IDENTIFICATION ; MORPHOLOGY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000388948600027 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/21930]  |
| 专题 | 上海硅酸盐研究所_无机功能材料与器件重点实验室_期刊论文 |
| 作者单位 | 1.City Univ Hong Kong, Dept Phys & Mat Sci, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, j,Cheung, K. W.,Yan, W. H. A.,et al. High-sensitivity low-power tungsten doped niobium oxide nanorods sensor for nitrogen dioxide air pollution monitoring[J]. SENSORS AND ACTUATORS B-CHEMICAL,2017,238:204-213. |
| APA | Yu, j,Cheung, K. W.,Yan, W. H. A.,Li, Y. X. B.,&Ho, D..(2017).High-sensitivity low-power tungsten doped niobium oxide nanorods sensor for nitrogen dioxide air pollution monitoring.SENSORS AND ACTUATORS B-CHEMICAL,238,204-213. |
| MLA | Yu, j,et al."High-sensitivity low-power tungsten doped niobium oxide nanorods sensor for nitrogen dioxide air pollution monitoring".SENSORS AND ACTUATORS B-CHEMICAL 238(2017):204-213. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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