Ionic-liquid-gated porous graphene membranes for efficient CO2/CH4 separation

Challenges and strategies for imidazolium ionic liquids as novel phase change materials for low and medium temperature thermal energy storage: A critical review

“…A series of work have been carried out to understand the confinement effect since then. Ionic liquids trapped in the nanoporous matrices of encapsulation shell belongs to three-dimensional restricted area, which covers the host matrix of metalorganic frameworks [161][162][163] , covalent organic frameworks [164][165][166] , nanoporous silicas (SiO2) [167,168] and carbons [169,170] , carbon nanotubes [171][172][173] , zeolites [174][175][176] , etc. Among these porous materials, nanoporous silicas (average pore sizes of 2.0 ~ 34.3 nm) is the most popular one due to their interconnected nanoporous structure, large surface area, high thermal/mechanical stability, nontoxicity and easy synthesis.…”

A comprehensive review of molecular dynamics simulation on the replacement characteristics and mechanism of CO2‐CH4 hydrate in porous media systems

“…The 200∼400 m shallow geological depth is ideal for CO 2 storage. Cai et al 91 used non-equilibrium MD simulations to investigate the impact of graphene and ionic liquids with varying pore sizes on CO 2 /CH 4 separation performance. Different cation sizes have an effect on membrane separation performance while utilizing the same anions as gated ions.…”

Multiscale simulations of nanofluidics: Recent progress and perspective

“…The gas separation utility of nanoporous membranes can be broadened by adding ionic liquids (ILs). 59,297,316 The ultrathin ILs films afford dynamic tuning of the size and chemical affinity of nanopores while preserving the high permeance of the monolayer nanoporous graphene membranes. It was found that when a monolayer of [emim][BF4] (1-Ethyl-3-MethylImidazolium TetraFluoroBorate) is deposited on the porous graphene, CO 2 has much higher permeance than N 2 and CH 4 .…”

“…Liu et al 60 proved that the porous bilayer membranes of graphene and h‐BN have high efficiency for CO 2 /CH 4 separation, due to the asymmetric properties of two membranes inducing a permeation flux difference and potential energy difference from one side to the other side. The gas separation utility of nanoporous membranes can be broadened by adding ionic liquids (ILs) 59,297,316 . The ultrathin ILs films afford dynamic tuning of the size and chemical affinity of nanopores while preserving the high permeance of the monolayer nanoporous graphene membranes.…”