Solid State Tin Oxide based Gas Sensor for Liquefied Petroleum Gas Detection at Room Temperature

International Journal of Medical Science
© 2014 by SSRG - IJMS Journal
Volume 1 Issue 1
Year of Publication : 2014
Authors : TriptiShukla and S.K. Omanwar
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TriptiShukla and S.K. Omanwar, "Solid State Tin Oxide based Gas Sensor for Liquefied Petroleum Gas Detection at Room Temperature," SSRG International Journal of Medical Science, vol. 1,  no. 1, pp. 18-20, 2014. Crossref, https://doi.org/10.14445/23939117/IJMS-V1I1P105

Abstract:

This paper presents the Liquefied Petroleum Gas sensing of tin oxide. Variations in resistance with exposure of LPG to the sensing element were observed. The average sensitivity for different volume percentage of gas was estimated. The maximum value of average sensitivity was found 2.0 for 2 vol.% of LPG. Percentage sensor response as a function of time was calculated and its maximum value was 79%. Response time of the sensor was 70 sec. Scanning electron micrographs and X-ray diffraction studies of samples have been done. SEM shows that grains are spherical in shape. XRD pattern reveals the tetragonal crystalline nature of the material. The crystallites size of the SnO2 was found 22 nm. The sensor was quite sensitive to LPG and results were found reproducible.

Keywords:

LPG Sensor, TiO2, SEM, XRD, Sensitivity

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