Synthesis, Characterization, and Sensing Behavior Study of Cadmium-Doped Nickel Manganese Ferrite/CdO Nanoparticles

Dimethylformamide (DMF) vapor is a toxic compound that has many industrial applications. In this article, a DMF gas sensor was developed using cadmium-doped nickel manganese ferrite/cadmium oxide nanoparticles based on the co-precipitation method. A study of response/recovery characteristics in a temperature range of 50 °C-300 °C revealed that the best operating temperature is 250 °C. At this temperature, a fast response/recovery time and a high response magnitude were achieved. The sensor was highly selective at this temperature for DMF among other toxic gases. The sensor also showed a very low drift of less than 2% in its response magnitude over 15 days.