期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 8, 页码 2351-2355出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201408633
关键词
electromanipulation; nanochannels; water transport
资金
- NSFC [11405146, 61274099, 51234007, 51404291, 51490654]
- NBRPC [2012CB825700]
- PCSIRT [IRT1294]
- Shandong Provincial NSFC [ZR2013DL011]
- Zhejiang Provincial Science and Technology Key Innovation Team [2011R50012-2]
- Key Laboratory [2013E10022]
- Cornell University
In sharp contrast to the prevailing view that a stationary charge outside a nanochannel impedes water permeation across the nanochannel, molecular dynamics simulations show that a vibrational charge outside the nanochannel can promote water flux. In the vibrational charge system, a decrease in the distance between the charge and the nanochannel leads to an increase in the water net flux, which is contrary to that of the fixed-charge system. The increase in net water flux is the result of the vibrational charge-induced disruption of hydrogen bonds when the net water flux is strongly affected by the vibrational frequency of the charge. In particular, the net flux is reaches a maximum when the vibrational frequency matches the inherent frequency of hydrogen bond inside the nanochannel. This electromanipulating transport phenomenon provides an important new mechanism of water transport confined in nanochannels.
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