Fast nano-grained Fe 3 O 4 gas sensor for the control of CO and NO 2 concentrations

In this paper, a resistive-metal-oxide gas sensor based on Fe 3 O 4 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.