| Gas Sensing Characteristics of Nano-Structured Metal Oxides | |
| Tang, Zilong ; Ji, Yingmin ; Xu, Yuxing ; Xu, Rui ; Zhang, Zhongtai ; Zhou, Zhigang | |
| 2010-10-12 ; 2010-10-12 | |
| 关键词 | Gas Sensing Hydrothermal Nano-Structures Metal Oxide HYDROTHERMAL SYNTHESIS TITANATE-NANOTUBE FILMS TIO2 Chemistry, Analytical Electrochemistry Instruments & Instrumentation Physics, Applied |
| 中文摘要 | Four nano-structured metal oxides: H2Ti3O7 nanotubes, TiO2 nanotubes, Li4Ti5O12 nanotubes and LiAlO2 nanobelts have been synthesized successfully by using sonochemical-hydrothermal processes. Sensors based on the materials have been prepared on alumina substrates for detecting NO2, H-2 and CO. The SEM micrographs showed that the sensing films kept nanostructures with many holes owing to the ruleless conformation of nanotubes. Li4Ti5O12 nanotubes sensor showed an obvious sensing characteristic to NO2 at 150 degrees C, and the sensitivity increased with increasing NO2 concentration operated from 150 degrees C to 300 degrees C. The best sensitivity (1000) for 1880 ppm NO2 was obtained at 300 degrees C. Sensors based on pure and doped TiO2 nanotubes with Nb5+, Sn4+, Mn4+ and Cr3+, respectively, were prepared and the gas response characteristics were investigated in detail. Sensors based on TiO2 nanotubes doped with Nb5+ showed the best H-2 sensing properties at 300 degrees C. Sensor based on pure TiO2 nanotubes showed better selectivity for H-2 than CO measured at 350 degrees C and 400 degrees C. |
| 语种 | 英语 ; 英语 |
| 出版者 | AMER SCIENTIFIC PUBLISHERS ; STEVENSON RANCH ; 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/78187]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Tang, Zilong,Ji, Yingmin,Xu, Yuxing,et al. Gas Sensing Characteristics of Nano-Structured Metal Oxides[J],2010, 2010. |
| APA | Tang, Zilong,Ji, Yingmin,Xu, Yuxing,Xu, Rui,Zhang, Zhongtai,&Zhou, Zhigang.(2010).Gas Sensing Characteristics of Nano-Structured Metal Oxides.. |
| MLA | Tang, Zilong,et al."Gas Sensing Characteristics of Nano-Structured Metal Oxides".(2010). |
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