conditions. There were no significant changes of the catalytic activity of the sensor for 60 h over 5 days, with an R.S.D. of less than 5%
by collecting the CTL intensities once an hour. We characterized
the material by XRD after CTL reaction, and found that the component of the material did not change except the morphology. We
also found that the nanomaterials partly fell from the ceramic rod
after 5-day reaction, which might lead to the short lifetime of the
sensor. The stable cataluminescence intensity of TiO2/SnO2 nanostructure to benzene and toluene vapors provided such enhanced
cataluminescence performance.