Figure 8

The hysteresis of (a) CeO2 and (b) Ce2Ti2O7 sensing membrane with NH3 plasma treatment in various conditions during a pH loop of 7→4→7→10→7 over a period of 25 minutes.
The hysteresis of (a) CeO2 and (b) Ce2Ti2O7 sensing membrane with NH3 plasma treatment in various conditions during a pH loop of 7→4→7→10→7 over a period of 25 minutes.