| 氧化钨纳米线的制备及表征和一氧化碳的气敏性能(英文) |
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| 引用本文： | 徐宇兴,唐子龙,张中太.氧化钨纳米线的制备及表征和一氧化碳的气敏性能(英文)[J].硅酸盐学报,2009,37(3). |
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| 作者姓名： | 徐宇兴 唐子龙 张中太 |
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| 作者单位： | 清华大学材料系,新型陶瓷与精细工艺国家重点实验室,北京100084 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用简单水热法制备了六方相氧化钨纳米线,并采用X射线粉末衍射仪、扫描电镜、透射电镜、X射线光电子分光仪和Brtmaucr-Emmctt-Teller法等分析手段和方法表征纳米线的各项性能.研究了水热反应时间对水热反应产物结构、形貌和比表面积的影响.将该纳米线用丝网印刷法制备成敏感膜,经350℃烧结1h后,测试了其在200~350℃的温度范围内对低浓度(1~100)×10-6]CO气体的气敏性能,结果表明:敏感膜具有良好的响应恢复特性和较高的稳定性及重复性,在350℃时,其灵敏度高达4.8;对同种浓度的CO气体,经多次重复测试后其电阻值仍能升高或降低到同一水平;随测试温度的升高,该纳米线敏感膜的灵敏度基本上呈线性增加的趋势.
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| 关 键 词： | 氧化钨纳米线 制备 一氧化碳气敏性能 |
PREPARATION AND CARBON MONOXIDE SENSING PROPERTIES OF TUNGSTEN TRIOXIDE NANOWIRES |
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| XU Yuxing,TANG Zilong,ZHANG Zhongtai.PREPARATION AND CARBON MONOXIDE SENSING PROPERTIES OF TUNGSTEN TRIOXIDE NANOWIRES[J].Journal of The Chinese Ceramic Society,2009,37(3). |
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| Authors: | XU Yuxing TANG Zilong ZHANG Zhongtai |
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| Affiliation: | State Key Laboratory of New Ceramics and Fine Processing;Department of Materials Science and Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | Hexagonal tungsten trioxide nanowires were prepared successfully by a simple hydrothermal method,and the properties of the products were characterized by the X-ray diffraction,scanning electron microscope,transmission electron microscope,X-ray photoelectron spectroscopy,and Brunauer-Emmett-Teller(BET) methods.The effects of reaction time on structures,morphologies and BET surface areas of the products were investigated in detail.A new application of their CO gas sensing properties at low con-centrations((1-... |
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| Keywords: | tungsten trioxide nanowires preparation carbon monoxide gas sensing property |
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