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Abstract
Graphene-based materials are considered as the most promising materials due to their wide range of applications mainly in CO2 recovery. In the present study, graphene is synthesized by electrochemical exfoliation method and biochar is taken as a carbon precursor. Prepared graphene is characterized by FTIR, XRD, SEM and Raman techniques. Graphene inks are prepared and coated onto the membrane substrate using ink-jet printer. The coated membranes are characterized and evaluated for CO2/N2 separation study. The base polymer substrate showed the CO2 permeance of 6.2 ± 2.5 with a CO2/N2 ideal selectivity of 10.5 ± 1.5 and real selectivity of 7.2 ± 3.2 for CO2/N2. The prepared membranes exhibited CO2 permeance of 70 ± 2.5 Barrer with a CO2/N2 ideal selectivity of 49.5 ± 1.5 and real selectivity of 44.2 ± 3.2 for CO2/N2.
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