Synthesis and gas sensing properties of Fe_2O_3 nanoparticles activated V_2O_5 nanotubes

摘要

The Fe_2O_3 nanoparticles activated V_2O_5 nanotubes were achieved via a hydrolysis method. The TEM and SEM images of the nanotubes indicated that the Fe_2O_3 nanoparticles with the particle size of about 15 nm were dispersed on the surface of the V_2O_5 nanotubes. The activated nanotubes exhibited excellent response and selectivity towards the ethanol gas. The lowest detection limit for ethanol gas was about 10 ppm at 230 ℃, which suggested that the Fe_2O_3 nanoparticles activated V_2O_5 nanotubes would be a potential candidate for practical detector for ethanol.