Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving

Two-dimensional nanopores are very promising for high-permeance molecular sieving, but the molecular backflow from permeate-side to feed-side is not beneficial for improving molecular permeance. We study the quasi-unidirectional molecular transport through a graphene-hexagonal boron nitride bilayer...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chengzhen Sun, Cheng Liu, Kailin Luo, Bofeng Bai
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	nanopore molecular sieve molecular dynamics gas separation membrane nanoporous graphene General Works A
Acceso en línea:	https://doaj.org/article/093dbf5c680b4083932b0f794306d64a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:093dbf5c680b4083932b0f794306d64a
record_format	dspace
spelling	oai:doaj.org-article:093dbf5c680b4083932b0f794306d64a2021-11-22T04:25:16ZQuasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving2296-598X10.3389/fenrg.2021.773924https://doaj.org/article/093dbf5c680b4083932b0f794306d64a2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenrg.2021.773924/fullhttps://doaj.org/toc/2296-598XTwo-dimensional nanopores are very promising for high-permeance molecular sieving, but the molecular backflow from permeate-side to feed-side is not beneficial for improving molecular permeance. We study the quasi-unidirectional molecular transport through a graphene-hexagonal boron nitride bilayer nanopore, aiming to realize a high-permeance molecular sieving. Molecular dynamics simulations of CO2/CH4 separations show that the bilayer pore presents 3.7 times higher selectivity comparing to the single-layer graphene nanopore with the same size. The quasi-unidirectional molecular transport is attributed to the distinctive adsorption abilities of gas molecules on the two sides of bilayer nanopores and the inhibited molecular backflow from permeate-side to feed-side. This work provides a promising way to realize the ultra-permeable porous membranes with molecular permeance even higher than the single-layer atomic-thickness membranes.Chengzhen SunCheng LiuKailin LuoBofeng BaiFrontiers Media S.A.articlenanoporemolecular sievemolecular dynamicsgas separation membranenanoporous grapheneGeneral WorksAENFrontiers in Energy Research, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nanopore molecular sieve molecular dynamics gas separation membrane nanoporous graphene General Works A
spellingShingle	nanopore molecular sieve molecular dynamics gas separation membrane nanoporous graphene General Works A Chengzhen Sun Cheng Liu Kailin Luo Bofeng Bai Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving
description	Two-dimensional nanopores are very promising for high-permeance molecular sieving, but the molecular backflow from permeate-side to feed-side is not beneficial for improving molecular permeance. We study the quasi-unidirectional molecular transport through a graphene-hexagonal boron nitride bilayer nanopore, aiming to realize a high-permeance molecular sieving. Molecular dynamics simulations of CO2/CH4 separations show that the bilayer pore presents 3.7 times higher selectivity comparing to the single-layer graphene nanopore with the same size. The quasi-unidirectional molecular transport is attributed to the distinctive adsorption abilities of gas molecules on the two sides of bilayer nanopores and the inhibited molecular backflow from permeate-side to feed-side. This work provides a promising way to realize the ultra-permeable porous membranes with molecular permeance even higher than the single-layer atomic-thickness membranes.
format	article
author	Chengzhen Sun Cheng Liu Kailin Luo Bofeng Bai
author_facet	Chengzhen Sun Cheng Liu Kailin Luo Bofeng Bai
author_sort	Chengzhen Sun
title	Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving
title_short	Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving
title_full	Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving
title_fullStr	Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving
title_full_unstemmed	Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving
title_sort	quasi-unidirectional transport bilayer two-dimensional nanopores for highly-efficient molecular sieving
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/093dbf5c680b4083932b0f794306d64a
work_keys_str_mv	AT chengzhensun quasiunidirectionaltransportbilayertwodimensionalnanoporesforhighlyefficientmolecularsieving AT chengliu quasiunidirectionaltransportbilayertwodimensionalnanoporesforhighlyefficientmolecularsieving AT kailinluo quasiunidirectionaltransportbilayertwodimensionalnanoporesforhighlyefficientmolecularsieving AT bofengbai quasiunidirectionaltransportbilayertwodimensionalnanoporesforhighlyefficientmolecularsieving
_version_	1718418203037663232

Quasi-Unidirectional Transport Bilayer Two-Dimensional Nanopores for Highly-Efficient Molecular Sieving

Ejemplares similares