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X-ray photoelectron spectroscopy studies on Pd doped SnO2 liquid petroleum gas sensor

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1 Author(s)
Phani, A.R. ; Department of Physics, University of L’Aquila, 67040, L’Aquila, Italy

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The present investigation deals with the electrical response of palladium doped tin oxide, as a means of improving the selectivity for liquid petroleum gas (LPG) in the presence of CO, CH4. The sensor element with the composition of Pd(1.5 wt %) in the base material SnO2 sintered at 800 °C, has shown a high sensitivity towards LPG with a negligible cross interference of CO and CH4 at an operating temperature of 350 °C. This greatly suggests the possibility of utilizing the sensor for the detection of LPG. X-ray photoelectron spectroscopy studies have been carried out to determine the possible chemical species involved in the gas-solid interaction and the enhancing mechanism of the Pd doped SnO2 sensor element, towards LPG sensitivity. © 1997 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:71 ,  Issue: 16 )

Date of Publication:

Oct 1997

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