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Comment on "Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins"
1Johannes Kepler University, 4020 Linz, Austria.
Science (New York, N.Y.)
|March 31, 2018
Abstract:
Tunuguntla et al (Reports, 25 August 2017, p. 792) report that permeation of single-file water occurs faster through carbon nanotubes than through aquaporins. We show that this conclusion violates fundamental thermodynamic laws: Because of its much lower activation energy, aquaporin-mediated water transport must be orders of magnitude faster. Leakage at the nanotube-membrane interface may explain the discrepancy.
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