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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

室温固相合成In2O3及其气敏性能研究

徐甲强1; 刘艳丽2; 牛新书2   

  1. 1. 郑州轻工业学院化学工程系, 郑州 450002; 2. 河南师范大学化学与环境科学学院; 河南新乡 453002
  • 收稿日期:2001-04-05 修回日期:2001-06-17 出版日期:2002-03-20 网络出版日期:2002-03-20

Gas Sensitive Properties of Nanometer Materials In2O3 Synthesized by Solid-State Reaction at Room Temperature

XU Jia-Qiang1; LIU Yan-Li2; NIU Xin-Shu2   

  1. 1.; Zhengzhou Institute of Light Industry; Zhengzhou Henan 450002; China; 2. College of Chemistry & Environmental Science; Henan Normal University; Xinxiang Henan 453002; China
  • Received:2001-04-05 Revised:2001-06-17 Published:2002-03-20 Online:2002-03-20

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1002

摘要： 以无机物ＩｎＣｌ３·４Ｈ２Ｏ和ＮａＯＨ为原料，在遵守热力学限制的前提下，用室温固相化学反应直接合成了半导体金属氧化物Ｉｎ２Ｏ３的纳米粉体，用Ｘ射线衍射技术和透射电子显微镜对产物的物相、形貌进行了表征和观察，并用静态配气法测定了材料的气敏性能．

关键词: 三氧化二铟, 气敏材料, 室温, 固相化学反应

Abstract: Nano-sized In2O3 powders were prepared by the solid-state reaction method. The crystal structure and ceramic microstructure of the powders were studied by XRD and TEM. The principle of the solid-state reaction at room temperature and the gas sensitivity of In2O3 were also discussed. The results show that the mean grain size of the powders is about 25nm. The In2O3 sensors show a higher sensitivity to ethanol than to H2, LPG, i-C4H10, CH4 and gasoline. The rate of response and recovery is quick.

Key words: In2O3, gas-sensing material, room temperature, solid-state reaction

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