论文标题
液体流过有缺陷的分层膜：现象学描述
Liquid Flow through Defective Layered Membranes: A Phenomenological Description
论文作者
论文摘要
我们通过有缺陷的分层膜对液体传输的现象学描述进行了现实的现象学描述。我们根据层流的常规模型得出一般表达式，并扩展形式主义以适应滑动流。我们考虑不同类型的缺陷，包括在膜中提供无激活的曲折路径的层内空位。在影响流动的许多因素中，最重要的是层内空置缺陷的半径，该缺陷进入了通量密度的第四功率。我们将形式主义应用于缺陷的多层石墨烯氧化物膜中，并发现该流量保留在层流状态中。我们的结果表明，在该系统中观察到的高水渗透性可以通过缩短有效扩散路径的足够密度来定量解释。
We present a realistic phenomenological description of liquid transport through defective, layered membranes. We derive general expressions based on conventional models of laminar flow and extend the formalism to accommodate slip flow. We consider different types of defects including in-layer vacancies that provide an activation-free tortuous path through the membrane. Of the many factors that affect flow, the most important is the radius of in-layer vacancy defects, which enters in the fourth power in expressions for the flux density. We apply our formalism to water transport through defective multilayer graphene oxide membranes and find that the flow remains in the laminar regime. Our results show that observed high water permeability in this system can be explained quantitatively by a sufficient density of in-layer pores that shorten the effective diffusion path.
