Manufacturing and investigations of i-butane sensor made of SnO2/multiwall-carbon-nanotube nanocomposite

Nanocomposite SnO2/multiwall-carbon-nanotubes were prepared by the sol–gel method. The morphology of prepared nanocomposite powder was investigated by scanning electron microscopy. Energy-dispersive X-ray and X-ray diffraction analyses were carried out, the element structure of a nanocomposite has been determined. Ceramic and thick film gas sensors made of the nanocomposite multiwall-carbon-nanotube/SnO2/Pd structure were manufactured and investigated. After the sensitization in the Ru(OH)Cl3 water solution, these sensors have rather high response to isobutane already at 120 °С. The response of prepared sensors was measured at different gas concentrations and at different temperatures of the work body.