Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 155, Issue 2, Pages 659-666Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2011.01.026
Keywords
Semiconductor oxides; Gas sensors; Pt/SnO2 catalyst; CO oxidation; TPD-O-2
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The article presents the results of research studies on ceramics SnO2 sensors with Pt catalysts. The role of catalysis in gas sensing mechanisms was investigated. In order to obtain samples with different catalytic activity but with identical Pt loading, the Pt/SnO2 catalysts were calcined at different temperatures (400-800 degrees C). Structural analysis of these samples was performed. Among the sensors manufactured with Pt/SnO2, the highest sensitivity was shown for the sensor obtained with Pt/SnO2 sample sintered at 800 degrees C. The correlation between catalytic activity and sensor sensitivity is given. (C) 2011 Elsevier B.V. All rights reserved.
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