Thick films of LaNiO3 perovskite structure impregnated with ln and Bi oxides as acetonitrile sensor

Abstract

Thick films of having perovskite structure impregnated with indium and bismuth oxides have been used as sensing material for acetonitrile (CH3CN) gas. The sensor response for CH3CN is quite good with an excellent recovery for partial pressure from 3 ppm to 20 ppm between 200 and 150 degrees C. LaNiO3 alone has exhibited low response, but after impregnation of In2O3 and Bi2O3 have given increased sensitivity even with 3 ppm partial pressure of CH3CN at 200 degrees C. It is assumed that CH3CN is undergoing oxidation reaction on surface of the film.