Water Transport and Purification in Nanochannels Controlled by Asymmetric Wettability
文献类型：期刊论文
| 作者 | Chen, Qinwen2; Meng, Lingyi2; Li, Qikai1; Wang, Dong1; Guo, Wei2; Shuai, Zhigang1; Jiang, Lei2 |
| 刊名 | SMALL
 |
| 出版日期 | 2011-08-08 |
| 卷号 | 7期号:15页码:2225-2231 |
| ISSN号 | 1613-6810 |
| DOI | 10.1002/smll.201100287 |
| 英文摘要 | Biomimetic asymmetric nanochannels have recently attracted increasing attention from researchers, especially in the aspect of the asymmetric wettability (a hydrophilic-hydrophobic system), which can be utilized to control the wetting behavior of aqueous media and to offer a means for guiding water motion. By using molecular dynamics simulations, a design for a potentially efficient water filter is presented based on (n, n) single-walled carbon nanotubes, where n = 6, 8, 10 and 12, asymmetrically modified with hydrophilic groups (carboxyl, -COOH) at one tip and hydrophobic groups (trifluoromethyl, -CF(3)) at the other. The reduced water density on the hydrophobic sides of the functionalized nanotubes are observed in both pure water and aqueous electrolyte solution, except for the functionalized (6, 6) tube, due to the change of dipole orientation of the single-file water wire within it. The functionalized (8, 8) tube can significantly maintain the low water density on the hydrophobic side. Both (6, 6) and (8, 8) tubes have relatively high energy barriers at their tips for ion permeation, which can be obtained by calculating the potential of mean force. Such tip functionalization of a nanotube therefore suggests the great possibilities of water transport and filtration, dominated by asymmetric wettability. The functionalized (8, 8) tube could act as a nanofluidic channel for water purification, not only for ion exclusion but also as a stable water column structure. |
| 语种 | 英语 |
| WOS记录号 | WOS:000294361200014 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72759]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shuai, Zhigang |
| 作者单位 | 1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Qinwen,Meng, Lingyi,Li, Qikai,et al. Water Transport and Purification in Nanochannels Controlled by Asymmetric Wettability[J]. SMALL,2011,7(15):2225-2231. |
| APA | Chen, Qinwen.,Meng, Lingyi.,Li, Qikai.,Wang, Dong.,Guo, Wei.,...&Jiang, Lei.(2011).Water Transport and Purification in Nanochannels Controlled by Asymmetric Wettability.SMALL,7(15),2225-2231. |
| MLA | Chen, Qinwen,et al."Water Transport and Purification in Nanochannels Controlled by Asymmetric Wettability".SMALL 7.15(2011):2225-2231. |
入库方式： OAI收割
来源：化学研究所
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