应用化学 ›› 1992, Vol. 0 ›› Issue (1): 51-55.

• 研究论文 • 上一篇    下一篇

Fe2O3-SnO2复合气敏材料的气敏性能研究

曾桓兴, 文向阳   

  1. 中国科学技术大学材料科学与工程系 合肥 230026
  • 收稿日期:1990-11-27 修回日期:1991-03-01 出版日期:1992-02-10 发布日期:1992-02-10

GAS SENSING CHARACTERISTICS OF Fe2O3-SnO2 COMPOSITE

Zeng Huanxing, Wen Xiangyang   

  1. University of Science and Technology of China
  • Received:1990-11-27 Revised:1991-03-01 Published:1992-02-10 Online:1992-02-10

摘要: 本文采用共沉淀方法制备超微粒子原料粉,测试了不同配比材料的气敏灵敏度,并探讨了不同粒度的Fe2O3原料与气敏特性之间的关系,提出Fe2O3-SnO2复合气敏材料的气敏机制属体控制与表面控制兼有的混合机制·Fe2O3-SnO2,复合气敏材料,选用CuO掺杂,可制出对乙炔具有高选择性和灵敏度的气敏元件。

关键词: 超微粒氧化铁, 气敏机理, 乙炔, 传感器

Abstract: The character and mechanism of Fe2O3-SnO2 composite as a gas sensor were studied.The effects of grain size of iron oxides and the ratio Fe2O3 to SnO2 on gas sensing property were examined.The Fe2O3-SnO2 composite as a gas sensing element has a mixed mechanism of bulkcontrolled type and surface-controlled type. The Fe2O3-SnO2 composite doped with CuO, may be used as C2H2 gas Sensor.

Key words: iron oxides, gas sensor, mechanism, C2H2