Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels

Yang Y, Dementyev P, Biere N, Emmrich D, Stohmann P, Korzetz R, Zhang X, Beyer A, Koch S, Anselmetti D, Gölzhäuser A (2018)
ACS NANO 12(5): 4695-4701.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The provision of clean water is a global challenge, and membrane filtration is a key technology to address it. Conventional filtration membranes are constrained by a trade-off between permeance and selectivity. Recently, some nanostructured membranes demonstrated the ability to overcome this limitation by utilizing well-defined carbon nanoconduits that allow a coordinated passage of water molecules. The fabrication of these materials is still very challenging, but their performance inspires research toward nanofabricated membranes. This study reports on molecularly thin membranes with subnanometer channels that combine high water selectivity with an exceptionally high permeance. Carbon nanomembranes (CNMs) of similar to 1.2 nm thickness are fabricated terphenylthiol (TPT) monolayers. Scanning probe microscopy and transport measurements reveal that TPT CNMs consist of a dense network of sub-nanometer channels that efficiently block the passage of most gases and liquids. However, water passes through with an extremely high permeance of similar to 1.1 x 10(-4) mol.m(-2).s(-l)Pa(-1), as does helium, but with a 2500 times lower flux. Assuming all channels in a TPT CNM are active in mass transport, we find a single-channel permeation of 66 water molecules s(-l).Pa-1. This suggests that water molecules translocate fast and cooperatively through the subnanometer channels, similar to carbon nanotubes and membrane proteins (aquaporins). CNMs are thus scalable two-dimensional sieves that can be utilized toward energy-efficient water purification.
Stichworte
membrane separation; 2D material; water purification; sub-nanometer; channels; self-assembled monolayer
Erscheinungsjahr
2018
Zeitschriftentitel
ACS NANO
Band
12
Ausgabe
5
Seite(n)
4695-4701
ISSN
1936-0851
eISSN
1936-086X
Page URI
https://pub.uni-bielefeld.de/record/2920689

Zitieren

Yang Y, Dementyev P, Biere N, et al. Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels. ACS NANO. 2018;12(5):4695-4701.
Yang, Y., Dementyev, P., Biere, N., Emmrich, D., Stohmann, P., Korzetz, R., Zhang, X., et al. (2018). Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels. ACS NANO, 12(5), 4695-4701. doi:10.1021/acsnano.8b01266
Yang, Y., Dementyev, P., Biere, N., Emmrich, D., Stohmann, P., Korzetz, R., Zhang, X., Beyer, A., Koch, S., Anselmetti, D., et al. (2018). Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels. ACS NANO 12, 4695-4701.
Yang, Y., et al., 2018. Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels. ACS NANO, 12(5), p 4695-4701.
Y. Yang, et al., “Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels”, ACS NANO, vol. 12, 2018, pp. 4695-4701.
Yang, Y., Dementyev, P., Biere, N., Emmrich, D., Stohmann, P., Korzetz, R., Zhang, X., Beyer, A., Koch, S., Anselmetti, D., Gölzhäuser, A.: Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels. ACS NANO. 12, 4695-4701 (2018).
Yang, Yang, Dementyev, Petr, Biere, Niklas, Emmrich, Daniel, Stohmann, Patrick, Korzetz, Riko, Zhang, Xianghui, Beyer, André, Koch, Sascha, Anselmetti, Dario, and Gölzhäuser, Armin. “Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels”. ACS NANO 12.5 (2018): 4695-4701.

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