Fasano Matteo, Chiavazzo Eliodoro, Asinari Pietro
Dipartimento Energia, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy.
Nanoscale Res Lett. 2014 Oct 8;9(1):559. doi: 10.1186/1556-276X-9-559. eCollection 2014.
Based on a recent scaling law of the water mobility under nanoconfined conditions, we envision novel strategies for precise modulation of water diffusion within membranes made of carbon nanotube arrays (CNAs). In a first approach, the water diffusion coefficient D may be tuned by finely controlling the size distribution of the pore size. In the second approach, D can be varied at will by means of externally induced electrostatic fields. Starting from the latter strategy, switchable molecular sieves are proposed, where membranes are properly designed with sieving and permeation features that can be dynamically activated/deactivated. Areas where a precise control of water transport properties is beneficial range from energy and environmental engineering up to nanomedicine.
基于最近纳米受限条件下水迁移率的标度律，我们设想了精确调制碳纳米管阵列（CNA）制成的膜内水扩散的新策略。第一种方法是通过精细控制孔径的尺寸分布来调节水扩散系数D。第二种方法是借助外部感应静电场随意改变D。从后一种策略出发，提出了可切换分子筛，其中膜经过适当设计，具有可动态激活/失活的筛分和渗透特性。精确控制水传输特性有益的领域涵盖从能源与环境工程到纳米医学等诸多方面。
