Production Techniques and Chemistry > Colloidal Silver Production
Lot of dark stuff on my kathode?
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axkman:
Hi there!
I have a question. I made a new batch of 500ml nano silver water which looks beautifull!
I just wonder. I made the cathode electrode 50% shorter than the anode. But.. there is a thick cloud of black stuff (silver oxide?) on it after 2 hours of production on 2ma current.
My glass is on a magnetic stirrer. But I wondered, do you guys know a way to prevent this silver oxide build-up on the kathode?
cfnisbet:
There isn't a way to prevent it, really. Just making the Colloidal Silver correctly will minimise it.
axkman:
Okay, thank you for your reply.
Is there maybe some advices on how to reduce it? Like should i retract the kathode a bit more? Or should i get my magnetic stirrer a bit more RPM?
Or maybe less current (my current was max 2ma with a current source that prevents more than 6ma current).
cfnisbet:
--- Quote from: axkman on August 02, 2020, 12:10:56 PM ---Okay, thank you for your reply.
Is there maybe some advices on how to reduce it? Like should i retract the kathode a bit more? Or should i get my magnetic stirrer a bit more RPM?
Or maybe less current (my current was max 2ma with a current source that prevents more than 6ma current).
--- End quote ---
The electrolyte is the main key to plateout reduction, followed by making the Colloidal Silver slowly at low amperage.
Bobby:
axkman,
What ppm are you going for?
cfnisbet is completely right. The electrolyte has to be made and measured just right.
What was your voltage?
Bobby
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