http://silverpuppy.com/csh2o2.html
What H2O2 does to stabilized CS. [before and after micrographs, thanks to
Nancy Delise ]
Ode
At 11:00 PM 1/26/2008 -0600, you wrote:
George,
1.) I can't remember the exact amount, but I believe I have used up to 15
or 20 drops (sometimes more) of 3% H2O2 for about 20 ounces of CS,
depending on the strength of the CS. Wait a few days after making the CS
before adding H2O2. Also, if you cap the bottle the reaction continues
longer if you are trying to get it to clear.
I think I have heard one teaspoon per gallon... One quarter teaspoon is
about 20 drops, one teaspoon is about 80 drops, but drops vary in size so
this is only approximate.
If you are using 35% food grade H2O2, that would only be a few drops
(divide by 10 approximately).
2.) Generally, people are recommending a maximum of 1 to 1.5 mA per
square inch of wetted anode. I think you could go higher, depending on
how good your stirring is. The thinking is that lower currents give you
smaller particles, and higher currents cause agglomeration of silver into
larger particles.
Using H2O2 after making as described above should break up these larger
particles.
You should use the Faraday Equations spread sheet to determine how much
silver you are releasing into the water. The Equations will give you the
*maximum* amount of silver released, but you will loose some as buildup on
your electrodes unless you use polarity switching.
Dan
George Knoll wrote:
I have some questions.. as I want the most effective CS I can make
and the best quality..
No. 1.. When one adds H2O2 how much per quart...
then I assume you would multiply the by 4 for a gal.
No.2 I have 4 sq in of Silver bar in a qt jar and start
my current at 4 mA on my power supply..
As the process continues over time the density
of silver builds up in the water and the mA will increase
to over 15 mA. My question is would it not be better to
lower the mA back to 8 or less to have a better product?
Lowering the mA wil prolong the process. taking longer
but my goal is quality. Does it make a difference My voltage starting out
is 30 volts. On my present setup to bring the mA down requires less
volts. I have order a 40 mA dc light bulb and that will help
Let me know your thoughts.l I hope this also helps some new be CS makers
George Knoll
[email protected]
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