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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
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.
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- Copyright © Materials Research Society 2000
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