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Fast nano-grained Fe3O4 gas sensor for the control of CO and NO2 concentrations

In this paper, a resistive-metal-oxide gas sensor based on Fe3O4 nano-powders is presented. The sensor is proposed for the detection of the combustion by-products CO and NO2. The device performance is assessed as a function of both gas concentration and temperature. The developed device has a fast response that makes it suitable for combustion control applications.