Author/Authors :
Aroutiounian، نويسنده , , V.M. and Adamyan، نويسنده , , A.Z. and Khachaturyan، نويسنده , , E.A. and Adamyan، نويسنده , , Z.N. and Hernadi، نويسنده , , K. and Pallai، نويسنده , , Z. and Nemeth، نويسنده , , Z. and Forro، نويسنده , , L. and Magrez، نويسنده , , A. and Horvath، نويسنده , , E.، نويسنده ,
Abstract :
Multi-walled carbon nanotubes (MWCNTs) were successfully coated with tin-dioxide (SnO2) nanoparticles using both hydrothermal process and sol–gel technique under different solvent conditions. The obtained MWCNTs/SnO2 nanocomposites had the weight ratio of the components 1:4, 1:8 and 1:50, respectively. The as-prepared nanocomposites were characterized in detail using scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). Gas-sensor structures are developed on the base of these materials. High response to methanol and ethanol vapour as well as i-butane gas at 200 °C operating temperature has been revealed for the functionalized with Ru nanocomposite thick-film sensor structures having the ratio of the components 1:8 and 1:50. The structures having 1:4 ratio of components exhibit the best selectivity toward methanol and ethanol vapors.
Keywords :
SnO2–MWCNTs nanocomposite , Gas sensor , Ethanol , Ru , Methanol , i-Butane
