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Type: Journal article
Title: Calculations of helium separation via uniform pores of stanene-based membranes
Author: Gao, G.
Jiao, Y.
Jiao, Y.
Ma, F.
Kou, L.
Du, A.
Citation: Beilstein Journal of Nanotechnology, 2015; 6(1):2470-2476
Publisher: Beilstein-Institut
Issue Date: 2015
ISSN: 2190-4286
Statement of
Guoping Gao, Yan Jiao, Yalong Jiao, Fengxian Ma, Liangzhi Kou, and Aijun Du
Abstract: The development of low energy cost membranes to separate He from noble gas mixtures is highly desired. In this work, we studied He purification using recently experimentally realized, two-dimensional stanene (2D Sn) and decorated 2D Sn (SnH and SnF) honeycomb lattices by density functional theory calculations. To increase the permeability of noble gases through pristine 2D Sn at room temperature (298 K), two practical strategies (i.e., the application of strain and functionalization) are proposed. With their high concentration of large pores, 2D Sn-based membrane materials demonstrate excellent helium purification and can serve as a superior membrane over traditionally used, porous materials. In addition, the separation performance of these 2D Sn-based membrane materials can be significantly tuned by application of strain to optimize the He purification properties by taking both diffusion and selectivity into account. Our results are the first calculations of He separation in a defect-free honeycomb lattice, highlighting new interesting materials for helium separation for future experimental validation.
Keywords: fluorination; gas purification; honeycomb lattice
Rights: © 2015 Gao et al; licensee Beilstein-Institut.
RMID: 0030041518
DOI: 10.3762/bjnano.6.256
Grant ID:
Appears in Collections:Chemical Engineering publications

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