| 钇掺杂纳米α-Fe2O3的合成及气敏性能研究 |
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| 引用本文： | 陈思顺,陈新华,丁明洁,牛新书.钇掺杂纳米α-Fe2O3的合成及气敏性能研究[J].电子元件与材料,2005,24(9):25-27,29. |
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| 作者姓名： | 陈思顺 陈新华 丁明洁 牛新书 |
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| 作者单位： | 漯河职业技术学院,河南,漯河,462002;河南师范大学化学与环境科学学院,河南省高等学校环境科学与工程重点学科开放实验室,河南,新乡,453002;漯河职业技术学院,河南,漯河,462002;河南师范大学化学与环境科学学院,河南省高等学校环境科学与工程重点学科开放实验室,河南,新乡,453002 |
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| 摘 要： | 采用柠檬酸sol-gel法制备了不同掺杂量的Y2O3-Fe2O3(w(Y2O3)=0~7%)纳米粉体材料,并用X射线衍射仪、透射电镜等测试手段分析了材料的微观结构,并进行了气敏性能测试。研究发现:掺杂适量Y2O3可抑制α-Fe2O3晶粒的生长,提高粉体材料的气敏性能,其中掺杂量为5%的烧结型气敏元件在160℃的较低温度条件下,对汽油有较高的灵敏度,较好的选择性及响应–恢复特性,且线性检测范围较宽。
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| 关 键 词： | 无机非金属材料 纳米氧化铁 掺杂 气敏特性 |
| 文章编号： | 1001-2028（2005）09-0025-03 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2005-08-10 |
Study on Y Doped Synthesis and Gas-sensing Properties of Nano-meter Iron Oxides |
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| CHEN Si-shun,CHEN Xin-hua,DING Ming-jie,NIU Xin-shu.Study on Y Doped Synthesis and Gas-sensing Properties of Nano-meter Iron Oxides[J].Electronic Components & Materials,2005,24(9):25-27,29. |
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| Authors: | CHEN Si-shun CHEN Xin-hua DING Ming-jie NIU Xin-shu |
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| Abstract: | Prepared was the Y2O3 doped α-Fe2O3(w(Y2O3)=0~7%) nanosized powder by sol-gel method in the citric acid system. By means of XRD and TEM,microstructure was characterized. The gas-sensing properties of sensor were also measured. Obtained results show that the grain size becomes smaller and the sensitivity rises when Y2O3-doped amount is suitable. The sensor has high sensitivity and good selectivity to gasoline when w(Y2O3) is 5% and optimum working temperature is lower (160℃). |
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| Keywords: | inorganic non-metallic materials nano iron oxide doping gas-sensing properties |
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