Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (1): 51-55.

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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

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