Tin, Niobium and Vanadium mixed oxide thin films based gas sensors for chemical warfare agent attacks prevention

In this work we have studied the synthesis and characterization SnO₂ thin films with varying Nb and V content for Sarin detection. As target molecule we used dimethyl methylphosphonate (DMMP), a Sarin nerve agent simulant. Nb and V oxides have been used because of their well-known catalytic properties. Results highlight that the proposed approach is suitable to develop sensors of DMMP at ppb level needed for security applications. Gas sensing performances have been investigated and the optimal Nb and V content for DMMP detection has been determined.