Gas Diffusion Electrode (GDE) works on the principle of meeting of 3 phases at a single point with gas moving to liquid. Does this process strictly states that gas should move to liquid only through diffusion, or it can move through a combination of diffusion and direct mixing (as bubbling)..?
Wrong question. If you create bubbles (I do not know the system you refer to) this will increase the gas/liquid interface and hence increase the dissolution of gas in the liquid phase (Henry's law). Inside the gas phase of the GDE, gas transport is by diffusion and permeation (i.e. concentration and pressure driven) depending on the pore size at the point you are considering. GH
Dear gregor,
the solubility of the said gas in itself very less in the liquid and the function of GDE is to provide 3 phase intesention to overcome the limitation of "low solubility of gas in liquid" by making reaction of gas happen without actually getting the whole liquid saturated.. in that case the gas bubbles formed on GE surface would not increase the interaction surface area, but can decrease.
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