Abstract
Gas membrane separation technology is a kind of mixed gas separation technology with low energy consumption, simple equipment, easy operation and no influence on the environment. Due to the special properties of graphene oxide (GO) membrane, GO membrane has become a research hotspot of mixed gas membrane separation technology. In this paper, A critical GO membrane thickness is demonstrated: when the thickness is less than 600nm, the conductance of the GO membrane is inversely exponential to the membrane thickness, but the conductance is inversely proportional to the thickness when the membrane is thicker than 600nm. Through the experimental study of Helium (He) through the GO membrane penetration, the gas through the GO membrane mathematical model is established. Through theoretical analysis, the transmission mechanism of gas through GO film is obtained, which provides support for GO membrane for gas separation in the future.
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