| 钼掺杂氧化铁基纳米材料的合成及气敏性能研究 |
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| 引用本文： | 王百木,黄文华,牛新书.钼掺杂氧化铁基纳米材料的合成及气敏性能研究[J].河南师范大学学报(自然科学版),2011,39(3):96-98. |
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| 作者姓名： | 王百木 黄文华 牛新书 |
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| 作者单位： | 1. 永城职业学院,河南永城,476600
2. 河南师范大学,化学与环境科学学院,河南新乡453007 |
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| 基金项目： | 国家自然科学基金，河南省自然科学基金 |
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| 摘 要： | 利用柠檬酸溶胶-凝胶法合成掺杂钼的Fe2O3复合氧化物对H2S等还原性气体有很高的灵敏度,并利用XRD对产品的物相进行了分析;用TEM或SEM对粉体晶粒的粒径和形貌进行了观察;将产物粉体制成气敏元件,采用静态配气法在气敏测试仪上进行了灵敏度和响应-恢复曲线的测试,研究证明钼铁复合氧化物对H2S气体有很好的气敏特性,其中...
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| 关 键 词： | 纳米材料 复合氧化物MoO3-Fe2O3 气敏性 |
Gas Sensing Properties of M-doped Fe2O3 Nanomaterials |
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| WANG Bai-mu,HUANG Wen-hua,NIU Xin-shu.Gas Sensing Properties of M-doped Fe2O3 Nanomaterials[J].Journal of Henan Normal University(Natural Science),2011,39(3):96-98. |
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| Authors: | WANG Bai-mu HUANG Wen-hua NIU Xin-shu |
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| Institution: | 1.Yongcheng Vocational College,Yongcheng 476600,China;2.College of Chemistry and Environmental Sciences,Henan Normal University,Xinxiang 453007,China) |
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| Abstract: | A serial of nanometer materials are synthesized by sol-gel method in the citric acid system,The structure and crystal phase of the powders are characterized on an X-ray diffractometer;the shape and size are analyzed with the help of JSM-6390LV scan electron microscopy or JEM-100X Transmission electron microscopy.The product powders are made up gas sensors and gas sensitivities of these materials to different gas are tested on the gas-sensing propertied testing instrument.Respond that 0.33MoO3-Fe2O3 and 0.5MoO3-Fe2O3 have higher sensitivity to H2S.0.5MoO3-Fe2O3 is spherical with the mean grain size of 30 nm,has higher sensitivity(96)to H2S at the optimum working temperature(300 ℃),The response and reversion characteristic of sensor are good. |
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| Keywords: | nanomaterials iron oxide composite moxide gas sensing properties |
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