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Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 1, Issue 3, Pages 613-622, DOI: https://doi.org/10.21307/ijssis-2017-310
License : (CC BY-NC-ND 4.0)
Published Online: 13-December-2017
SmCoO3 gas sensor has been developed with high sensitivity for CO2 gas by doping Ba. Nanostructured SmCoO3 and Sm1-xBaxCoO3 (x = 0, 0.1, 0.15, 0.2) were obtained by EDTAGlycol method. The operation temperature falls and sensitivity increases from 425 to 370OC
when Ba concentration in SmCoO3 changes from x = 0 to x = 0.1. Ag impregnation over Sm0.9Ba0.1CoO3 sensor, on exposure to CO2 at about 360OC showed an increased sensitivity as well as the response time also decreases. The possible CO2 sensing mechanism is proposed on the basis of available literatures.
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