CO2/CH4 mixed-gas separation through carbon nitride membrane: A molecular dynamics simulation

Crown Ether Nanopores in Graphene Membranes for Highly Efficient CO2/CH4 and CO2/CO Separation: A Theoretical Study

“…31−33 Additionally, carbon nitrides such as C 2 N and C 9 N 7 have theoretically been shown to achieve outstanding CO 2 /CH 4 separation, with separation performance tunable through surface charges and in-plane strains. 34,35 Therefore, 2D nanomaterials hold great potential for CO 2 /CH 4 separation with exceptional performance. In particular, theoretical approaches have extensively unveiled many porous materials possessing superior CO 2 separation capacity from mixtures, e.g., CO 2 /CH 4 mixtures.…”

“…For example, Zheng et al found that strain-oriented graphdiyne monolayers exhibit extremely high CO 2 selectivity and permeability, making them promising candidates for CO 2 /CH 4 separation, via molecular dynamics (MD) simulations . Porous graphene membranes, especially those functionalized with negative charges or nitrogen atoms at the pore edges, also show ultrahigh selectivity and capture efficiency for CH 4 separation in theoretical calculations. − Additionally, carbon nitrides such as C 2 N and C 9 N 7 have theoretically been shown to achieve outstanding CO 2 /CH 4 separation, with separation performance tunable through surface charges and in-plane strains. , Therefore, 2D nanomaterials hold great potential for CO 2 /CH 4 separation with exceptional performance. In particular, theoretical approaches have extensively unveiled many porous materials possessing superior CO 2 separation capacity from mixtures, e.g., CO 2 /CH 4 mixtures.…”

Highly efficient helium purification through a dual-membrane system: insights from molecular dynamics simulations

“…23 The membrane technology is preferable to the conventional techniques owing to its low energy consumption, compact equipment, small footprint, and simple operation. [24][25][26][27][28] Moreover, it is found that membrane technology can compete with conventional separation methods even at low helium concentrations. 13 The choice of membrane material has a determining role in the separation performance.…”

Synthesis of dual‐functionalized mixed matrix membrane with amino‐GO‐Bent/PVDF for efficient separation of CO2/CH4 and CO2/N2

“…[10][11][12][13][14][15] Currently, among various membrane materials, polymeric membrane materials are mainly considered for industrial CO 2 separation because of their easy processing, simple synthesis method, and low cost. [16][17][18] However, it is difficult for such materials to overcome the reciprocal (trade-off) effect between permeation flux and separation performance. To overcome this effect, researchers usually fill the organic matrix with materials with good CO 2 affinity as inorganic fillers to improve CO 2 permeability, such as zeolites, 19 silica nanospheres, 20 metal-organic skeletons, and covalent organic skeletons, [20][21][22][23][24] graphene materials, [25][26][27] and other inorganic/organic porous fillers.…”

“…Therefore, membrane‐based separation technology is attractive because of its continuity and simplicity of operation, high efficiency, low energy consumption, simple equipment, low cost, modular and environmental friendliness, and is regarded as an ideal gas separation method 10–15 . Currently, among various membrane materials, polymeric membrane materials are mainly considered for industrial CO 2 separation because of their easy processing, simple synthesis method, and low cost 16–18 . However, it is difficult for such materials to overcome the reciprocal (trade‐off) effect between permeation flux and separation performance.…”