Spinel ferrite nanoparticles for H₂S gas sensor

We investigate H₂S gas sensors based on spinel ferrite CuFe₂O₄ nanoparticles prepared by the co-precipitation method. This technique is an efficient and fast technique to produce nanoparticles. Furthermore, those nanoparticles are metal-oxide nanoparticles with magnetic properties that enable their retrieval and reuse for mutable times and applications. The produced nanoparticles are pressed in a form of disc, and placed between two electrical electrodes, with the top electrode with a grid structure to enable gas exposure. The study includes investigations of crystal structure, composition, morphology, and charge transport. The results revel that the produced nanoparticles are sensitive and selective to H₂S which indicate their potential to be used for practical applications.