Study of the surface-ruthenated SnO2/MWCNTs nanocomposite thick-film gas sensors

V. M. Aroutiounian, A. Z. Adamyan, E. A. Khachaturyan, Z. N. Adamyan, K. Hernadi, Z. Pallai, Z. Nemeth, L. Forro, A. Magrez, E. Horvath

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31 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)308-315
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume177
DOIs
Publication statusPublished - Jan 7 2013

Keywords

  • Ethanol
  • Gas sensor
  • Methanol
  • Ru
  • SnO-MWCNTs nanocomposite
  • i-Butane

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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    Aroutiounian, V. M., Adamyan, A. Z., Khachaturyan, E. A., Adamyan, Z. N., Hernadi, K., Pallai, Z., Nemeth, Z., Forro, L., Magrez, A., & Horvath, E. (2013). Study of the surface-ruthenated SnO2/MWCNTs nanocomposite thick-film gas sensors. Sensors and Actuators, B: Chemical, 177, 308-315. https://doi.org/10.1016/j.snb.2012.10.106