Ferrite Materials Produced From Self-Propagating High-Temperature Synthesis for Gas Sensing Applications

The gas-sensing properties of orthorhombic and spinel ferrites (LaFeO3, NiFe2O4 and CoFe2O4) prepared by self-propagating high-temperature synthesis (SHS) have been investigated. This is one of the first reports of using an SHS derived powder for gas sensing applications. The gas response of the materials was tested against a wide range of environmentally important gases (ethanol, ethane, ethene, ammonia, propane, and CO) at a range of different operating temperatures. Good gas response behavior was found with excellent selectivity toward ethanol, particularly in the case of the LaFeO3 sensor.

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