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

Journal of Inorganic Materials

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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.; 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

Abstract

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

CLC Number:

TN304

XU Jia-Qiang,LIU Yan-Li,NIU Xin-Shu. Gas Sensitive Properties of Nanometer Materials In₂O₃ Synthesized by Solid-State Reaction at Room Temperature[J]. Journal of Inorganic Materials.

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

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