Water in Nanoconfined Geometries
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- Kyakuno Haruka
- 神奈川大学工学部
Bibliographic Information
- Other Title
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- 制限ナノ空間における水の物性
Abstract
<p>Confined water inside single-walled carbon nanotubes (SWCNTs) with mean diameters D larger than ca. 1.4 nm was studied using 2H nuclear magnetic resonance spectroscopy, X-ray diffraction measurements, and molecular dynamics calculations. The results were compared with those for hydrophilic pores and three-dimensional pores. It was found that faster water dynamics could be achieved by increasing the hydrophobicity of the pore walls and decreasing the pore diameters. Upon cooling below 220 K, water inside the SWCNTs undergoes a dynamic/structural transition at Tc～210 K, which depends on D. It was also predicted by MD calculations that a new form of ice, ice nanoribbon, can be formed within a SWCNT which is uniaxially compressed in a direction perpendicular to the SWCNT axis. The present study established that the temperature, pore size, pore topology, hydrophobicity, and pore shape have significant effects on the properties of confined water. The results provide information that is helpful not only for the design of high performance nanofluidic devices but also for further studies into the unsolved properties of bulk water.</p>
Journal
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- Butsuri
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Butsuri 77 (4), 215-221, 2022-04-05
The Physical Society of Japan
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Details 詳細情報について
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- CRID
- 1390291767851520640
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- ISSN
- 24238872
- 00290181
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- Text Lang
- ja
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- Data Source
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- JaLC
- KAKEN
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- Abstract License Flag
- Disallowed