International Journal of Chemical Engineering / 2021 / Article / Tab 2 / Research Article
pH Sensitivity Estimation in Potentiometric Metal Oxide pH Sensors Using the Principle of Invariance Table 2 TLM and Sverjensky model parameters.
MOX Electrolyte N s ε s (s /r MOH )b logK 1 logK 2 logK cat logK ani RuO2 KCl 12.6 [42 ] 55.2 [43 ] 0.2257 [44 , 45 ] 8.5845 2.1831 1.9 2.2 6.6845 4.3831 17.6 Ta2 O5 KCl 4 50 [46 ] 0.2625 [39 , 47 , 48 ] 7.2768 0.4077 1.9 2.2 5.3768 2.6077 6 10 [49 ] 25 [46 ] 0.2581 [39 , 50 ] 7.8602 1.0470 1.9 2.2 5.9602 3.2470 12 [51 ] TiO2 KCl 2.7 [52 ] 80 [53 ] 0.2256 [54 , 55 ] 8.4689 2.0685 1.9 2.2 6.5689 4.2685 5 7 35 [53 ] 0.2264 [54 , 55 ] 8.7802 2.3701 1.9 2.2 6.8802 4.5701 12.5 [52 ] 35 0.2260 [54 , 55 ] 8.7943 2.3890 1.9 2.2 6.8943 4.5890 NaCla 12.5 35 — 8.6000 2.2000 2.5 2.3 6.1000 4.5000 Al2 O3 KCl 12.04 [51 ] 10.43 [25 ] 0.1913 [25 ] 11.4840 5.5190 1.9 2.2 9.5840 7.7190 1.3 [56 ]
a Experimental run conducted using the
C 1 capacitance of 120
μ F as specified by Dimitri [
30 ].
b The first reference cited is for the MO
X coordination number for determining
s . Subsequent references are for determining the metal-oxygen bond length (
r MO ).
