关键词: 碳纳米管, 膜, 分离

Abstract: Carbon nanotube (CNT) shows exceptional properties，such as high mechanical strength，large specific surface，and excellent transmission characteristics，which made it a good candidate for composite membrane preparation. After chemical modification，CNTs were functionalized and easily dispersed in membrane. With a brief introduction of the modification of carbon nanotubes and methods for preparing CNT-based composite membranes，the effects of the functionalized CNTs on hydrophilic，water flux，separation performance and the mechanical stability of membranes are reviewed in detail in this article. The recent development of CNT orientation in polymer membrane and its effect on the properties of membrane were also summarized. Due to the anisotropy of CNTs，using electric field，magnetic field and flow field to orientate the CNTs in membrane to make full use of its superior performance shall be the future focus of research on composite membrane.

Key words: carbon nanotubes, membranes, separation