I have been trying to do Pt deposition on Silver, but the papers I am referring use Saturated calomel electrode (SCE). Can Ag/AgCl/KCl be used instead of that or it might have some stability issues. I am using
Hello Khantesh Agrawal
For how long did you perform the deposition for ?
The issue is the low pH, but you could actually use a salt bridge.
You may want to check the potential of the RE before and after deposition to ensure that it had not drifted or become damaged.
It should also be rinsed well after use and placed in sat. KCl solution for storage.
Best regards,
Marie B.
You can use both electrodes as reference just you need to consider that the potential value of saturated calomel electrode is 0.2412 vs normal hidrógeno electrode and the silver/AgCl depends on the molarity of solution, Ag/AgCl,KCl (0.1M) has a value of 0.2871 vs NHE Ag/AgCl, KCl (3.5M) is 0.205 vs NHE and Ag/AgCl,KCl (sat.) Is 0.197 vs NHE but you can use it.
If you want to self assure that the electrode can't be corroded or something if your experiment is too long you can put a saline bridge between the electrode and the solution with a nafion membrane and a capilar tube. The solution should be the same as the electrode 3M, 1M or saturated.
I hope it could be useful for you.
@ Marie Berthuel, the deposition of Pt is for less than 2 minutes. The pH of the solution is 4.
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