Gas-Sensing by Polymer-Iron Nanocomposite Materials

Electrical properties of new polymer-iron nanocomposite materials obtained by laser pyrolysis were investigated, in order to find applications for the detection of reducing gases. The aim of this paper was to prove the necessity of complex experimental investigation in order to point out the contribution of different types of adsorption. Usually resistance measurement cannot fully describe the surface interactions. The electron affinity changes are of real interest for in-field conditions which always involve humidity of surrounding gas- atmosphere. On the other hand, the nanocomposite materials can be a solution for specific gas-sensing properties.