Reverend Necroticus Rex - 28-8-2005 at 17:50
I have been attempting to prepare a platinum plated carbon electrode for use in some organic electrochemistry, using Pt metal (as foil) and a graphite
electrode.
I tried first, to prepare hexachloroplatinic acid by electrolysis of small pieces of Pt in a few ml. HCl, which seemingly failed, as I could plate
neither a copper wire strand, or the electrode.
I also tried dissolving Pt in hot aq. NaOH in the hope that it would form a platinate salt capable of being used in a plating bath.
Has anyone had success with electroplating of Pt onto carbon? I UTFSE for platinum electroplating, but came up with no results.
I thought of doing it in aqua regia, but I haven't any nitric acid with which to prepare it, and distillation from a nitrate isn't practical
for me at the moment, as I have no dedicated lab space
BromicAcid - 28-8-2005 at 18:01
AC electrolysis of platinum in HCl is supposedly the way to dissolve it, axehandle attempted to do this with two pieces of platinum wire, but I
don't know if he ever suceeded, he has a little section on his site relating to it and a thread here, actually after looking it up it appears to
have worked.