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LaCo1−xFexO3 (x ranging from 0 to 1) nanoparticles were prepared using the co-precipitation method, and the CO gas sensing properties of LaCo1−xFexO3 nanoparticles were investigated. The LaCo0.3Fe0.7O3 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 LaCo0.2Fe0.8O3...
Porous LaCoO3 films with a thickness of ~5μm were printed on Al2O3 ceramic substrates by means of screen printing, and the CO gas sensing properties of the LaCoO3 thick films were characterized in the CO concentration range of 0.01%–1% and the temperature range of 200 to 600°C. Sensors based on LaCoO3 films displayed high response, excellent recovery and good stability to CO gas; the sensor response...
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