CO2 sensing characteristics of Sm1-xBaxCoO3 (x = 0, 0.1, 0.15, 0.2) nanostructured thick film

Chaudhari, G.N.; Padole, P.R.; Jagatap, S.V.; Pawar, M.J.

doi:10.21307/ijssis-2017-310

Abstract

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 EDTA-Glycol method. The operation temperature falls and sensitivity increases from 425 to 370°C when Ba concentration in SmCoO₃ changes from x = 0 to x = 0.1. Ag impregnation over Sm_0.9Ba_0.1CoO₃ sensor, on exposure to CO₂ at about 360°C 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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CO2 sensing characteristics of Sm1-xBaxCoO3 (x = 0, 0.1, 0.15, 0.2) nanostructured thick film

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