Implications of Permeation through Intrinsic Defects in Graphene on the Design of Defect-Tolerant Membranes for Gas Separation
Name
2014- Boutilier - Implications of Permeation through Intrinsic Defects in Graphene.pdf
Size
1.18 MB
Format
Adobe PDF
Checksum (MD5)
103f6b38971a2e4c0d0f2fbf28b5cc7f
Author(s)
Sun, Chengzhen
O’Hern, Sean C.
Au, Harold
Boutilier, Michael Stephen Hatcher
Hadjiconstantinou, Nicolas
Karnik, Rohit
Date Issued
January 2014
Journal
ACS Nano
Publisher
American Chemical Society (ACS)
Citation
Boutilier, Michael S. H., Chengzhen Sun, Sean C. O’Hern, Harold Au, Nicolas G. Hadjiconstantinou, and Rohit Karnik. “Implications of Permeation through Intrinsic Defects in Graphene on the Design of Defect-Tolerant Membranes for Gas Separation.” ACS Nano 8, no. 1 (January 28, 2014): 841–849.
Version
Author's final manuscript
Abstract
Gas transport through intrinsic defects and tears is a critical yet poorly understood phenomenon in graphene membranes for gas separation. We report that independent stacking of graphene layers on a porous support exponentially decreases flow through defects. On the basis of experimental results, we develop a gas transport model that elucidates the separate contributions of tears and intrinsic defects on gas leakage through these membranes. The model shows that the pore size of the porous support and its permeance critically affect the separation behavior, and reveals the parameter space where gas separation can be achieved regardless of the presence of nonselective defects, even for single-layer membranes. The results provide a framework for understanding gas transport in graphene membranes and guide the design of practical, selectively permeable graphene membranes for gas separation.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/nn405537u
