Excellent ethanol sensing properties based on Er2O3-Fe2O3 nanotubes*
Liu Chang-Baia), He Yingb), Wang Sheng-Leia)
       
The response and recovery curves of Er2O3-Fe2O3 nanotube sensors to 300 ppb (a), 5 ppm (b), 10 ppm (c), and 20 ppm (d) ethanol at 240 °C.