| ZnS掺杂WO_3纳米粉体的制备及H_2S气敏性能 |
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| 引用本文： | 魏少红,冯青琴,牛新书.ZnS掺杂WO_3纳米粉体的制备及H_2S气敏性能[J].电子元件与材料,2010,29(2). |
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| 作者姓名： | 魏少红 冯青琴 牛新书 |
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| 作者单位： | 1. 安阳师范学院,化学系,河南,安阳,455000
2. 河南师范大学,化学与环境科学学院,河南,新乡,453002 |
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| 基金项目： | 河南省杰出青年科学基金资助项目(No.0012);;河南省教育厅自然科学研究计划资助项目(No.2009A150001) |
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| 摘 要： | 采用共沉淀法制备了w(ZnS)为0~0.2%的ZnS-WO3纳米粉体,利用X射线衍射仪分析了粉体的微观结构,探讨了ZnS掺杂量、工作温度对由所制粉体制成的气敏元件的气敏性能的影响。研究发现:适量的ZnS掺杂抑制了WO3晶粒的生长,提高了粉体对H2S的灵敏度。其中,掺杂ZnS的质量分数为1.0%的烧结型气敏元件,在160℃时对体积分数为0.001%的H2S的灵敏度达到87,响应时间7s,恢复时间12s。
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| 关 键 词： | WO3纳米粉体 ZnS掺杂 共沉淀法 气敏元件 |
Preparation and H_2S gas sensitive property of ZnS-doped WO_3 nanopowder |
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| WEI Shaohong,FENG Qingqin,NIU Xinshu.Preparation and H_2S gas sensitive property of ZnS-doped WO_3 nanopowder[J].Electronic Components & Materials,2010,29(2). |
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| Authors: | WEI Shaohong FENG Qingqin NIU Xinshu |
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| Affiliation: | 1. Department of Chemistry;Anyang Normal University;Anyang 455000;Henan Province;China;2. College of Chemistry & Environmental Science;Henan Normal University;Xinxiang 453002;China |
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| Abstract: | ZnS-doped WO3 nanopowder containing 0~2.0% ZnS (mass fraction) was prepared by coprecipitation. The microstructure prepared powder was characterized through XRD. The effects of ZnS-doped amount and working temperature on the gas sensitive property of the sensor fabricated from this nanopowder were investigated. The results show that the grain size of WO3 becomes smaller and the sensitivity of the sensor to H2S rises when the ZnS-doped amount is suitable. The sensor has high sensitivity and good selectivity ... |
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| Keywords: | WO3 nanopowder ZnS doping copercipitation method gas sensor |
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