Research Article
pH Sensitivity Estimation in Potentiometric Metal Oxide pH Sensors Using the Principle of Invariance
Figure 8
Total electrode potential ξ against pH for (a) TiO2, Ns: 7 (anatase), εs: 35, (b) Ta2O5, Ns: 4, εs: 50, (c) Ta2O5, Ns: 6, εs: 50, and (d) Al2O3, Ns: 1.3, εs: 10.43. The electrolyte is KCl for all cases.
| (a) |
| (b) |
| (c) |
| (d) |