The effect of variation in sintering temperature (500-900oC/4h) of ZnFe2O4 synthesized by using co-precipitation method on the gas sensing characters. The spinel structure and the presence of residual phases were checked by XRD analysis. Gas sensing response was evaluated as a function of operating temperature for different test gases/vapours such as ammonia (NH3), chlorine (Cl2), LPG, CO2, hydrogen sulphide (H2S) and Hydrogen (H2). Maximum gas response activity was achieved at 3000C concentration for hydrogen sulphide gas.
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