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关于"亚纳米碳纳米管孔中增强的水透性和可调节的离子选择性"的评论

Andreas Horner¹, Peter Pohl²

¹Johannes Kepler University, 4020 Linz, Austria.

Science (New York, N.Y.)

|March 31, 2018

概括

通过碳纳米管运输的速度比以前报告的要慢. 由于激活能量较低,水介导的水运输在热力学上更快. 接口泄漏可能会解释这些差异.

科学领域:

生物物理
纳米技术
物理化学

背景情况:

最近的报道表明,碳纳米管 (CNT) 的水透速度比水更快.
这一发现挑战了水上运输动态的既定原则.

研究的目的:

重新评估报告的通过CNT和水的透率.
在之前的结论中发现潜在的热力学不一致性.
调查水运测量的差异原因.

主要方法:

水运机制的热力学分析.
对水素和CNT通路的激活能量的理论评估.
分析潜在的实验文物,例如接口泄漏.

主要成果:

这项研究表明,通过水介导的水运输应该比通过CNT快得多.
这归因于通过水素素传输的激活能量明显较低.
在之前的研究中,CNT-膜接口的潜在泄漏被确定为可能的错误来源.

结论:

结论是,CNT比aquaporins更快地透水是热力学上不合理的.
由于激活能量较低,水波具有更高的水运输效率.
在涉及CNT水道的研究中,必须仔细考虑实验工件,特别是接口泄漏.

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