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Effect of Noble Metals on Selective Detection of LPG Based on SnO2

Published online by Cambridge University Press:  10 February 2011

A. Ratna Phani  and
M. Pelino
A. Ratna Phani
Affiliation:
Department of Chemistry and Materials, University of L'Aquila, 67040 Monteluco di Roio L'Aquila, ITALY, Phani@aquila.infn.it
M. Pelino
Affiliation:
Department of Chemistry and Materials, University of L'Aquila, 67040 Monteluco di Roio L'Aquila, ITALY, Phani@aquila.infn.it
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Abstract

The present investigation deals with the electrical response of noble metal doped SnO2 to improve the selectivity for Liquid Petroleum Gas (LPG) in the presence of CO and CH4. Addition of small amounts of nobel metals (Pd, Pt and Rh) to the base material SnO2 is carried out by co-precipitation method. X-ray diffraction and X-ray photoelectron spectroscopy studies are carried out to find out the crystalline phase and chemical composition of the SnO2. The sensor element has been tested for cross selectivity to reducing gases by measuring sensitivity versus sintering temperatures and sensitivity versus operating temperatures. The sensor elements with the composition of Pd (1.5 wt%) andPt (1.5 wt%) in the base material SnO2 sintered at 800°C showed high sensitivity towards LPG at an operating temperature of 350°C suggestingthe possibility to utilize the sensor for the detection of LPG.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 459: Symposium Y – Materials for Smart Systems II , 1996 , 87
Copyright
Copyright © Materials Research Society 1997

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References

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