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Ethanol sensing performances of modified CoFe2O4 nanocrystals prepared by polymerizable complex route

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Abstract or Description:

 


 


Spinel compound, CoFe2O4; an n-type semiconducting metal oxide has been synthesized by polymerizable complex route and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The sensitivity of CoFe2O4 thick films was measured at different operating temperatures. Ethanol detection results of sample GII show peak sensitivity at 1500C. The variation of sensitivity and ethanol concentration has shown an increase in sensor response and get saturated at 600 ppm. Sample GII impregnated with 1 wt.% palladium was able to detect 100 ppm of ethanol at 1000C. A low temperature ethanol sensitivity of CoFe2O4 is attributed due to polymerizable complex method employed for material preparation and impregnation of noble metal.

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Posted By: mahend on 3/5/2011 9:29:54 PM
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