Hello,
I am creating a GO/polymer scaffold using a 2/100 ratio in a THF suspension (the polymer is soluble). I would then spin coat it onto a porous support. The membranes show reasonable permeance values, but the gas selectivity of O2, CO2, and N2 are very poor (~1 for all). Any idea for the cause? I am thinking that there might be very small nanocracks between the GO and polymer. Any help is appreciated. The solution is prepared by mixing and sonicating a few times.
You can achieve the greater selectivity by functionlizing its surface by EDTA or any suitable agent.
The velocity of gas molecules passing through the porous septum into vacuum is inversely proportional to the square root of the molar mass. Check it out for your gases. Determine theoretically the separation coefficients. They will differ a little. Gas molecules must be accelerated in centrifuges.
You can achieve the greater selectivity by functionlizing its surface by EDTA or any suitable agent.
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