On electrode emits silver ions [Ag+], the other Hydroxyl anions [OH-]
Some of the Ag+ does find it's opposite OH- and form silver
hydroxide [AgOH ] which is not very soluble and makes up MOST of the
"particles"
If you use a bit too much current , you'll see a golden mist flowing
downward off one electrode [silver oxide], a white mist [silver hydroxide]
flowing downward off the other...each flowing toward the other ....and
NOTHING in between [silver ions]
If the electrodes are close to the bottom of your glass container and the
glass intersects the invisible portion of that inverted arc, the silver
ions evidently pick up electrons there and form a nice shiny mirror bonded
to the glass.
If the velocity of the ions is high enough [stirring], they'll pick up
electrons and keep going instead of bonding...but with that velocity, they
can also impact the surface tension of stationary bubbles on an electrode
and get caught. [along with silver hydroxide particles traveling at high
velocity]
Meaning..you can stir too fast.
If enough of them build up on that bubble, it forms a semi conductive
surface from which grows another bubble which collects particles to grow
yet another bubble and you get a fractal "greybeard" on that electrode.
The velocity of the water forms a pressure bond for the bubbles,
enhancing natural adhesion, so they don't get washed off and the greybeard
will grow into the direction of the water flow or collect in eddy currents
just behind the edges of flat electrodes.
At some point it gets big and heavy enough to fall off and sink or gets
whipped around in the water flow and broken up, while some not yet laden
enough to sink, rise and pop, transferring their load to the merging
surface tensions on top.
Much of the gas in the bubbles of the sunken structure will eventually
partly dissolve into the water if left alone and the bubbles emit a white mist.
To make a metallic particle, a silver ion must pick up a **free** electron
and free electrons don't exist in a liquid....but not everything is liquid.
There will be electrons available at the water/air interface on an
electrode as well as adhesion points of hydrogen bubbles [metallic silver
tends to get caught on the surface tension interface] and there are
electrons deposited on the surface of the glass like a capacitor at the
water/glass interface..using the metallic impurities inherent in the
silicone structure that glass *is* as a sort of piss poor solar panel
capturing electrons from whatever frequency ranges of electromagnetic
energy that might be around.
I don't think MesoSilver is strictly "metallic silver", but more like a
form of silver oxide that has more silver to it than oxygen...perhaps a
sort of mechanical structure that includes both metal and metal oxide.
There is no form of pure silver that I know of that is brown, regardless of
particle size.
A pure metallic structure can be coated with silver oxide, however, and
even *appear* to be black.
ode
At 03:55 PM 8/31/2010 -0700, you wrote:
I was under the impression that the particles in EIS are basically
metallic silver that was "stripped" off of the anode along with silver
ions coming off. If I understand correctly, Mesosilver particles are
metallic silver.
I read elsewhere that while silver ions are coming off the anode,
hydroxide ions are also coming off of the cathode. Then the two combine
into silverhydroxide. Then molecules of silverhydroxide agglomerate to
form particles. Is this true? If so, where is the hydroxide coming
from? Or is there only metallic particles? Or are there both metallic
particles as well as silverhydroxide particles?
Thanks,
~David A.
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