Effect of Supported Transition Metal on CO Sensing Performance Using SnO2 in Reducing Atmosphere

Abstract:

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CO sensing properties of various transition metal oxide-loaded SnO2 sensors were investigated in a reducing atmosphere such as wet H2 gas. Among transition metal oxide-loaded SnO2 sensors used in the present study, 5wt%CuO-loaded SnO2 sensor exhibited the highest sensitivity to 1% CO in wet 50% H2 at around 150 °C, while it showed no sensitivity in dry 50% H2. From XRD analysis, CuO was reduced to metallic Cu in a reducing atmosphere at above 150 °C. H2-temperature-programmed reduction (H2-TPR) and diffuse reflectance fourier transform infrared (DRIFT-IR) spectroscopy measurements were carried out to discuss the sensor response mechanism.

Info:

Periodical:

Advanced Materials Research (Volumes 47-50)

Edited by:

Alan K.T. Lau, J. Lu, Vijay K. Varadan, F.K. Chang, J.P. Tu and P.M. Lam

Pages:

1518-1521

DOI:

10.4028/www.scientific.net/AMR.47-50.1518

Citation:

H. Yamaura et al., "Effect of Supported Transition Metal on CO Sensing Performance Using SnO2 in Reducing Atmosphere", Advanced Materials Research, Vols. 47-50, pp. 1518-1521, 2008

Online since:

June 2008

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Price:

$35.00

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