COMPARATIVE STUDY ON AMMONIA SENSING PROPERTIES OF SNO2 NANOCOMPOSITES FABRICATED VIA ELECTROSPINNING AND SOL-GEL PROCESSES

Renju Thomas Jacob, Juny Thomas, Rosilin George, Manoj Kumaran, Govardhan

Abstract: In this paper, the performance of cerium doped SnO2 nanofibers towards ammonia synthesized by electro spinning is compared to the undoped SnO2 prepared by traditional Sol-Gel method. .The synthesis of nanofiber and normal SnO2 were characterized by XRD, SEM and FTIR. The response of both Sensor towards ammonia gas at different concentration (50-500ppm) with different operating temperature (2250C-4000C) were studied. Maximum Sensing response was seen in Nanofiber than in Nanocones prepared by the Sol-Gel method. Moreover, Nanofiber achieve a good sensitivity, fast response, low ppm detection, smaller grain size and good stability towards the target gas. These results bespeak the potential application of cerium-doped Tin oxide Nanofibers for fabricating high performance Ammonia sensors.

Keywords: Tin Oxide, Sol-Gel, Electrospinning Gas Sensing Chamber Ce-doped, Metal oxide semiconductor

DOI: https://doi.org/10.15623/ijret.2014.0305110