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Chemical Reactions on the Surface of SnO2 Nanosized Powders at the Origin of the GaS Sensing Properties: FTIR Investigation

Published online by Cambridge University Press:  21 February 2011

M.-I. Baraton  and
L. Merhari
M.-I. Baraton
Affiliation:
SPCTS-UMR 6638 CNRS, University of Limoges, F-87060 Limoges (France), baraton@unilim.fr
L. Merhari
Affiliation:
CERAMEC, F-87000 Limoges (France), ceramec@wanadoo.fr
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Abstract

The surface chemical reactions at the origin of the CO detection by SnO2-based sensors are investigated by Fourier transform infrared spectrometry for two different SnO2 particle sizes. Knowing that the variations of the infrared energy transmitted by the sample versus surrounding gases are related to the variations of the electrical conductivity, correlation of surface chemical reactions with the sensor response is established and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 559
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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