Effect of synthesis method and morphology on the enhanced CO2 sensing properties of magnesium ferrite MgFe2O4
Source abstract
Abstract
Abstract The synthesis and characterization of magnesium ferrite MgFe 2 O 4 prepared by co-precipitation and sol gel combustion is reported. Structural characterization showed that all the samples have single spinel phase. The co-precipitated sample exhibits smaller grains and twice higher BET surface than the sol gel combustion samples. The powder was shaped to dedicated chemo-resistive home-made sensors devices. The electrical properties and sensing properties towards carbon dioxide of both MgFe 2 O 4 powders were studied. The type of charge carriers were analysed on the basis of the change in resistance in the presence of air and argon. The sensing response towards CO 2 was found to be dependent on the morphology of the powder sample and the CO 2 concentration. A high response of 36% towards 5000 ppm of CO 2 was reached which is good for this gas. The key role of the Mg ions modulating the electrical properties is discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Electrical and Thermal Properties of Materials · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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