fig6

Figure 6. (A) Comparing deprotonation ability of solvation models without/with the cosolvent EG. A more negative MEP_H value corresponds to a lower deprotonation ability or higher pH. Generally, after coordinating with the cosolvent EG, a slight decrease in the MEP_H value is observed for solvation models EG-Zn(H₂O)₅²⁺ and EG-Zn(H₂O)₄²⁺-SO₄^2-, indicating that deprotonation becomes more difficult; (B) Experimental values of pH. As the EG volume fraction increases from 0% to 40%, the pH generally increases. EG: Ethylene glycol.