Abstract
The nano-sized (La0.8Sr0.2)2FeNiO6-Δ (LSFN) double perovskite powder without impurity phase was successfully prepared using the Pechini method. The result demonstrated that the electrode sensing properties to NO2 were affected by the sintering temperature. The sensor with 1300°C-sintered LSFN sensing electrode exhibited the highest NO2 sensitivity.
Highlights
The increasing amount of NO2 emissions from automobiles and various industrial processes has caused serious environmental pollution such as photochemical smog and acid rain[1]
The crystal structure of the LSFN powder and LSFN-sensing electrodes (SE) were examined by XRD
An oxide (La0.8Sr0.2)2FeNO6−δ with a double-perovskite structure, which was used as the sensing electrode of yttria-stabilized zirconia (YSZ)-based NO2 sensors, was successfully synthesized
Summary
The increasing amount of NO2 emissions from automobiles and various industrial processes has caused serious environmental pollution such as photochemical smog and acid rain[1]. Among the many gas sensors, solid-state sensors based on yttria-stabilized zirconia (YSZ) electrolytes and metal oxide sensing electrodes (SE) have become the most promising devices due to their low cost, compactness, sensitivity, and reliability. It is getting more and more attention from researchers or teams all over the world[2]. Some high temperature potential[3,4,5], impedance[6,7] and current [8,9]YSZ based gas sensors have been developed for the detection of NO2. We used the Pechini method in the sol-gel method to prepare nanosized LSFN powder
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