Dear Javad Imanipoor I'm not an expert in this, but you could perhaps a few answers to your question in this closely related RG thread entitled "What is the best and reliable method to determine point of zero charge (pHpzc)?"
https://www.researchgate.net/post/What_is_the_best_and_reliable_method_to_determine_point_of_zero_charge_pHpzc
Please also see this potentially useful article entitled "Potentiometric Mass Titrations: Experimental and Theoretical Establishment of a New Technique for Determining the Point of Zero Charge (PZC) of Metal (Hydr)Oxides"
Article Potentiometric Mass Titrations: Experimental and Theoretical...
Dear Javad Imanipoor
In my own case, I used the conventional drift method. I dispersed the MOFs in water at different pH range of 2 - 12 adjusted with HCl and NaOH solution. I recorded the pH as the initial and then subjected the mixture to ultrasonication for 24 hours. Later I measured the final pH and plot the graph of change in pH (delta pH)as y-axis against the initial pH (x-axis). The point where the axis intercept was recorded as the pHpzc of the MOF.
- Badges
- Science topic
- Similar topics
- Condensed Matter Physics
- Zero