A dimethyl disulfide gas sensor based on nanosized Pt-loaded tetrakaidecahedral-FeOnanocrystals.

Surface modification by employing precious metals is one of the most effective ways to improve the gas-sensing performance of metal oxide semiconductors. Pure-FeOnanoparticles and Pt-modified-FeOnanoparticles were prepared sequentially using a rather simple hydrothermal synthesis and impregnation method. Compared with the original-FeOnanomaterials, the Pt--FeOnanocomposite sensor shows a higher response value (/ = 58.