Enhancement of gas selectivity by additives and pattern recognition in SnO/sub 2/ sensors

Using gas chromatography (GC), the effect of additives on the decomposition reactions of both reducing gases (CH/sub 3/OH, C/sub 2/H/sub 5/OH, etc) and an oxidizing gas (CH/sub 3/CN) was analyzed for the selection of proper additives. The effect of additives was further investigated in terms of the...

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Bibliographic Details
Published inProceedings of IEEE Sensors, 2004 pp. 1396 - 1398 vol.3
Main Authors Hae-Won Cheong, Heesook Park Kim, Jong-Myong Kim
Format Conference Proceeding
LanguageEnglish
Published IEEE 2004
Subjects
Additives
Ball milling
Gas chromatography
Gas detectors
Gases
Pattern recognition
Powders
Sensor arrays
Sensor phenomena and characterization
Tin
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Summary:Using gas chromatography (GC), the effect of additives on the decomposition reactions of both reducing gases (CH/sub 3/OH, C/sub 2/H/sub 5/OH, etc) and an oxidizing gas (CH/sub 3/CN) was analyzed for the selection of proper additives. The effect of additives was further investigated in terms of the sensing characteristics. Based on these studies, two sensors, PdCl/sub 2/-added SnO/sub 2/ and La/sub 2/O/sub 3/-added SnO/sub 2/, showing discriminative sensing behaviors to CH/sub 3/CN were selected. By combining the signal patterns obtained from the two sensors, selectivity of the SnO/sub 2/ sensors for CH/sub 3/CN was highly enhanced.
ISBN:9780780386921
0780386922
DOI:10.1109/ICSENS.2004.1426445