Consecutive Water Transport through Zero-Dimensional Graphene Gates of Single-Walled Carbon Nanohorns
Consecutive Water Transport through Zero-Dimensional Graphene Gates of Single-Walled Carbon Nanohorns
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DOI：
10.1021/acs.jpcc.6b03142
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发表时间：
2016-04
影响因子：
3.7
通讯作者：
T. Ohba
中科院分区：
文献类型：
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作者：
T. Ohba
纳米空间中独特的水传输特性对于控制各种化学反应、生物化学活动和电化学系统至关重要。已经在一维纳米空间中观察到快速的水传输。然而，尚未观察到水通过零维纳米空间的传输。通过在单壁碳纳米角的石墨烯壁上插入极小且薄的栅极（零维栅极），获得了零维纳米空间。通过零维门的水蒸气加载和释放以及分子动力学模拟来考察水传输特性。虽然相对较大的门提供了相当大的吸附滞后的长期平衡，水蒸气加载和释放通过极小的门显示连续的水加载和释放。分子动力学模拟表明，连续的水运输通过门，可能是因为较低的能量障碍，水运输的附近的门。零D...
The unique water transport properties in nanospaces are essential for control of various chemical reactions, biochemical activities, and electrochemical systems. Fast water transport has been observed in one-dimensional nanospaces. However, water transport via zero-dimensional nanospaces has not yet been observed. Zero-dimensional nanospaces were obtained by extremely small and thin gate (zero-dimensional gate) insertion on graphene walls of single-walled carbon nanohorns. The water transport properties were examined by water vapor loading and release via the zero-dimensional gates, and molecular dynamics simulation. Although relatively large gates provided considerable adsorption hysteresis by long-term equilibrium, water vapor loading and release via the extremely small gates showed consecutive water loading and release. The molecular dynamics simulation showed consecutive water transport via the gates, probably because of lower energy barriers to water transport in the vicinity of the gates. The zero-d...