Temperature dependence of pressure-driven water permeation through membranes consisting of vertically-aligned double-walled carbon nanotube arrays
Temperature dependence of pressure-driven water permeation through membranes consisting of vertically-aligned double-walled carbon nanotube arrays
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DOI：
10.1016/j.carbon.2019.02.031
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发表时间：
2019-05
期刊：
影响因子：
10.9
通讯作者：
Shiho Shirahama;Shaoling Zhang;Motohiro Aiba;H. Inoue;M. Hada;Y. Hayashi;K. Hata;S. Tsuruoka;Hidetoshi Matsumoto
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文献类型：
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作者：
Shiho Shirahama;Shaoling Zhang;Motohiro Aiba;H. Inoue;M. Hada;Y. Hayashi;K. Hata;S. Tsuruoka;Hidetoshi Matsumoto
我们探讨了压力驱动的水渗透通过膜组成的垂直排列的双壁碳纳米管（VA DWCNT）阵列的温度依赖性。所制备的CNT内径为3.9 nm的膜在低于26 °C的临界温度下不表现出水渗透性，之后首先观察到水渗透性，并且随着温度>26 °C而增加。此外，当CNT内径增加到6.0 nm时，临界温度降低到18 °C。水在碳纳米管受限空间的渗透表现出在室温附近的活化能转变，从而表明，在碳纳米管中的受限水分子表现出多个有序结构。
We explore the temperature dependence of pressure-driven water permeation through membranes consisting of a vertically aligned double-walled carbon nanotube (VA DWCNT) array. The prepared membrane with CNT inner diameter of 3.9 nm exhibits no water permeation below the critical temperature of 26 °C, after which water permeability is first observed and increases with temperatures >26 °C. Further, the critical temperature decreases to 18 °C when the CNT inner diameter increases to 6.0 nm. The water permeation in the CNT-confined space exhibits activation energy transitions around room temperature, thereby suggesting that the confined water molecules in CNTs exhibit plural ordered structures.