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Abstract LaCo 1 − x Fe x O 3 (x ranging from 0 to 1) nanoparticles were prepared using the co-precipitation method, and the CO gas sensing properties of LaCo 1 − x Fe… Click to show full abstract
Abstract LaCo 1 − x Fe x O 3 (x ranging from 0 to 1) nanoparticles were prepared using the co-precipitation method, and the CO gas sensing properties of LaCo 1 − x Fe x O 3 nanoparticles were investigated. The LaCo 0.3 Fe 0.7 O 3 sensor shows the highest response at 250 °C (S = 40.9), and reliable dynamic response-and-recovery to different CO concentrations at a temperature as low as 50 °C. On the other hand, the LaCo 0.2 Fe 0.8 O 3 sensor exhibits the fastest response and recovery in the entire temperature region of 250 to 450 °C. The excellent CO sensing properties could be ascribed to the intense oxidation of CO by adsorbed O 2 on the LaCo 1 − x Fe x O 3 (x = 0.6, 0.7, 0.8) surface.
Journal Title: Solid State Ionics
Year Published: 2017
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