P1.7.5 i-Butane Sensor Made of SnO2/Multiwall-Carbon-Nanotube Nanocomposite

Abstract

The SnO 2 /multiwall-carbon-nanotube (MWCNT) nanocomposite powder was prepared by the sol-gel method and gas sensitive structures (ceramic and thick film) were manufactured made of it.The morphology of as-provided carbon nanotubes (CNTs) and prepared nanocomposite powder was investigated by scanning electron microscopy (SEM).The EDX and XRD analyses were also carried out, the element structure of a nanocomposite has been determined.The sensibilization of the nanocomposite SnO 2 /MWCNT in the Ru(OH)Cl 3 water solution leads to the appearance of rather high sensitivity to isobutane already at 120 о С.The sensitivity of prepared sensors was measured at different gas concentration.The influence of variation of the sensibilized solution concentration and the work body temperature on the sensor sensitivity was investigated.