P1.7.10 Methanol and ethanol vapor sensitivity of MWCNT/SnO2/Ru nanocomposite structures
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.7 Nanostructured Metal Oxide-based Sensors
- Author(s)
- V. Aroutiounian, A. Adamyan, E. Khachaturyan, Z. Adamyan - Center of Semiconductor Devices and Nanotechnologies, Yerevan State University (Armenia), K. Hernadi, Z. Pallai, Z. Nemeth - Department of Applied and Environmental Chemistry, University of Szeged (Hungary), L. Forro, A. Magrez - Ecole Polytechnique Fédérale de Lausanne (Switzerland)
- Pages
- 1085 - 1088
- DOI
- 10.5162/IMCS2012/P1.7.10
- ISBN
- 978-3-9813484-2-2
- Price
- free
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 mass 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) technique. On the base of these materials gas-sensor structures are developed. The high sensitivity to methanol and ethanol vapour as well as i-butane gas at 200 °C operation temperature have 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 with 1:4 ratio of the components are characterized by the best selectivity towards influence of methanol and ethanol vapor.