Asymmetric Two-Layer Porous Membrane for Gas Separation

The Journal of Physical Chemistry Letters
Maochang LiuDengwei Jing

Abstract

We present that the porous two-layer membranes of graphene and hexagonal boron nitride (h-BN) are promising for gas mixture separation. For the two-layer membranes, the mechanisms of the gas separation are (i) the different adsorption properties of gases on two membranes inducing a permeation flux difference from one side to the other and (ii) the asymmetric potential energy curves (potential energy of a gas molecule vs distance between the pore center and a gas molecule) of a two-layer membrane leading to a potential energy difference, which can affect gas permeation through the pore. As a concrete example, we explore the gas separation of CO2 and CH4 by the two-layer membrane using molecular dynamics simulations. Finally, on the basis of the distinctive permeation rates in the two directions, a gas separation system with two back-to-back arrayed graphene/h-BN membranes with big pores is designed to realize gas separation.

References

Jul 24, 2010·Angewandte Chemie·Deanna M D'AlessandroJeffrey R Long
Aug 25, 2012·Physical Chemistry Chemical Physics : PCCP·Andreas W Hauser, Peter Schwerdtfeger
Dec 12, 2012·ACS Nano·Pengzhan SunHongwei Zhu
May 9, 2013·Nature Communications·Weiwei LeiYing Chen
Dec 25, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Chengzhen SunNicolas G Hadjiconstantinou
Mar 14, 2014·ACS Applied Materials & Interfaces·Yehan TaoXiaofang Li
Nov 6, 2015·Soft Matter·Zonglin GuRuhong Zhou
Jan 21, 2017·Physical Chemistry Chemical Physics : PCCP·Chengzhen Sun, Bofeng Bai
Feb 24, 2017·Nano Letters·Ziqi TianDe-En Jiang
Dec 2, 2017·ACS Applied Materials & Interfaces·Danke ChenXinsheng Peng
Jul 8, 2018·Nature Communications·Shiqi HuangKumar Varoon Agrawal
Jul 31, 2019·The Journal of Physical Chemistry Letters·Bing-Yi GuoSui Zhang
Sep 5, 2019·The Journal of Physical Chemistry Letters·Daniil NaberezhnyiPetr Dementyev
Nov 5, 2019·The Journal of Physical Chemistry Letters·Chengzhen SunBofeng Bai

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.