HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 35013
Platinum black electroplating
+++++
I am trying to do platinum black electroplating using ysi 3140 platinizing solution. But I get either clustered or non uniform platinum black coating. Can anybody suggest, how to do a uniform platinum black coating.
Ajay Vikramalabama university - Montgomery, Alabama
+++++
There is a procedure for coating conductivity electrodes with platinum black in the "Conductivity" chapter of "Standard Methods for the Examination of Water and Wastewater" that might be of help to you.
|
Dave Wichern - The Bronx, New York |
October 18, 2010
I am experimenting with plating for neurological studies and am having trouble finding source of Platinum black on the web. Can anyone help?
Update: I have found suppliers but I still need information on how much PtBlk/liter to use when I plate a Pt electrode. I have read several papers, (Mareese, Feltham/Sriro, Mills, Desai, etc.), they all talk about the plating solution, (typically Cloroplatic acid and a lead compound), but none indicate how much Platinum Black they used.
engineer - Bozeman, Montana, USA
October 21, 2010
It depends on what you want to do? To plate platinum black on platinum? In that case you can use next solution and process (According to: G.Buchner:Metallfaerbung,Berlin 1922.): 300 mll water, 10 gm platinum chloride/0,08 gm lead acetate, 4-6 V, current density must be so strong that many gas bubbles forms, after 3-4 minutes poles must be reversed(+=-,-=+) and after 10 minutes black platinum must be formed. Hope it helps and good luck!
Goran Budija- Zagreb, Croatia
October 21, 2010
Thanks for your response. One of my pitfalls was thinking that platinum black needed to be added to the bath rather than the Pt being reduced from the chloroplatic acid.
Jerry GregoireElectronics - Bozeman, Montana, USA