Abstract
The nature and character of changes during thermal annealing of paramagnetic centers in TiO2–MoO3 gas-sensing materials with 1–10 mol% MoO3 content were studied. The results suggested that certain processes occurred in the sensor during thermocatalytic detection of combustible gases. It was found that an increase of the sensor output signal in the temperature range 200–350°C was due to active participation of MoO3 lattice oxygen in catalytic hydrogen oxidation processes.
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