Preparation and characterization of ferrites as gas sensor materials

The citrate process of preparation of ferrites is very effective in obtaining suitable forms for gas sensor applications. Virgin cobalt and zinc ferrites show a definite preferential sensitivity to hydrogen sulfide among all the test gases. Similarly, nickel ferrite is a potential material for the s...

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Published in:Journal of materials science letters 2000-01, Vol.19 (9), p.774-778
Main Authors: Reddy, C V Gopal, Manorama, S V, Rao, V J
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Manorama, S V
Rao, V J
description The citrate process of preparation of ferrites is very effective in obtaining suitable forms for gas sensor applications. Virgin cobalt and zinc ferrites show a definite preferential sensitivity to hydrogen sulfide among all the test gases. Similarly, nickel ferrite is a potential material for the selective detection of chlorine. Copper ferrite however, does not show any chlorine sensitivity. There is a qualitative favorable detection of reducing gases like carbon monoxide, hydrogen and liquefied petroleum gas over methane and ammonia. Incorporation of additives could achieve selectivity to any one of these gases. Thus, ferrites are possible materials for the detection of some toxic and hazardous gases.
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title Preparation and characterization of ferrites as gas sensor materials
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