基于碳纳米管的纳滤膜研究进展

Research progress in nanofiltration membrane based on carbon nanotubes

碳纳米管具有原子级光滑的内表面及纳米尺寸的孔道结构,应用于纳滤膜有望获得极高的输运速率和选择性。在综合分析几种典型碳纳米管纳滤膜(巴基纸纳滤膜、无序碳纳米管/聚合物混合滤膜和垂直排列碳纳米管复合滤膜)的制备、过滤性能及优缺点的基础上,提出垂直排列碳纳米管复合滤膜有利于充分发挥碳纳米管自身的优势,代表了该领域未来的发展方向。

Carbon nanotubes （CNTs） possess atomically smooth inner surface and nanoscale pores, which lead to extremely high permeability and selectivity as nanofiltration membranes. In this review, preparation methods, permeation properties, merits and limitations of several typical membranes based on CNTs are introduced, such as buckypaper membranes, random distributed CNT/polymer composite membranes, and vertically-aligned CNT/polymer composite membranes. It is suggested that nanofiltration membranes based on vertically-aligned CNTs may be promising since they could make a full use of the characteristics of CNTs.