Ionic liquids (ILs) have been proven to produce promising results in CO 2 capture. However, ILs suffer the problem of having high viscosities which limit the application. Impregnation of ILs into porous solid support may be an alternative to overcome this problem. In this study, the wet impregnation method was used and this was confirmed by surface area, pore volume and pore size before and after impregnation. Activated carbon impregnated with 10wt of hmimNTf 2 , vbtmagly and polyvbtmagly were prepared to study the CO 2 sorption. The results showed that activated carbon impregnated with vbtmagly gives higher CO 2 sorption with 19.91 mmol/g at 20 bar. Therefore, a series of activated carbon impregnated with l0wt%, 20wt% and 30wt% of vbtmagly were prepared to study the optimum composition of vbtmagly for CO 2 sorption. The CO 2 sorption studied showed the optimization occurred at 20wt% of polyvbtmagly and CO 2 uptake increased with pressure increased. © Published under licence by IOP Publishing Ltd.