Interplay between hydrophilicity and surface barriers on water transport in zeolite membranes.
A comprehensive understanding of molecular transport within nanoporous materials remains elusive in a broad variety of engineering and biomedical applications. Here, experiments and atomistic simulations are synergically used to elucidate the non-trivial interplay between nanopore hydrophilicity and surface barriers on the overall water transport through zeolite crystals. At these nanometre-length scales, these results highlight the dominating effect of surface imperfections with reduced permeability on the overall water transport. A simple diffusion resistance model is shown to be sufficient to capture the effects of both intracrystalline and surface diffusion resistances, thus properly linking simulation to experimental evidence. This work suggests that future experimental work should focus on eliminating/overcoming these surface imperfections, which promise an order of magnitude improvement in permeability.
Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy.
Matteo
0000-0002-3997-3681
M
Fasano
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Thomas
T
Humplik
Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy.
Alessio
A
Bevilacqua
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Michael
M
Tsapatsis
Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy.
Eliodoro
0000-0001-6165-7434
E
Chiavazzo
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Evelyn N
EN
Wang
Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy.
Pietro
0000-0003-1814-3846
P
Asinari
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