论文信息 - Highly sensitive impedance-based propene sensor using stabilized zirconia and zinc oxide sensing-electrode

Highly sensitive impedance-based propene sensor using stabilized zirconia and zinc oxide sensing-electrode

Abstract Aimed at an environmental monitoring of hydrocarbons (HCs), a new-type impedancemetric sensor was fabricated by using an yttria-stabilized zirconia (YSZ) tube and ZnO sensing-electrode (SE). The fabricated tubular sensor was examined for detection of low concentrations of propene (C 3 H 6 ) in the presence of 1.35 vol.% H 2 O and 400 ppm CO 2 at 600 °C. As a result, it was found that the present sensor could detect the low concentrations of C 3 H 6 in the range of 0.05–0.8 ppm and the sensitivity varied linearly with C 3 H 6 concentration. In addition, the C 3 H 6 sensitivity was almost invariant with the changes in the concentration of water vapor and the interferences to other gases, such as NO 2 , NO, H 2 , CO and CH 4 , were insignificant.

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