CO2是困扰地球的主要温室气体，因此减少CO2 排放是减缓温室效应、控制全球气候变暖的根本举措。对空气中排放的CO2进行分离与捕集是实现CO2减排的重要方法。本项目以获得应用于能源工业、交通运输工业的CO2分离与输运用单壁碳纳米管垂直阵列/聚合物纳滤膜为目的，从高密度垂直单壁碳纳米管阵列管隙间无缺陷填充方法着手，发展一种通过化学气相沉积在单壁碳纳米管阵列间隙原位生成聚合物纳米膜的方法，系统考察在高密度碳纳米管阵列中单体或低聚物的沉积行为，分析阐明工艺条件对沉积状态的影响规律；并深入开展碳纳米管/聚合物纳米体系中多余沉积物刻蚀、碳纳米管开孔等纳米加工工艺条件的研究，获得单壁碳纳米管排布有序、无填充缺陷，具有较高力学强度、耐热性能、耐化学药品性能的纳滤膜。同时，对纳滤膜的结构与气体输运性能进行评估。本项目的研究将为基于单壁碳纳米管垂直阵列的纳滤膜器件的宏量制备及应用研究奠定理论与物质基础。

Cutting back the release of carbon dioxide (CO2) is the most efficient way in mitigating the greenhouse effect and controlling global warming, with CO2 being the major greenhouse gas plagueing our planet. Separation and entrapment of CO2 released into the air is an important way to reduce the CO2 concentration.The overall goal of the proposed research is to acquire nanofiltration membranes based on vertically aligned single- walled nanotubes (VASWNT), with the target end use for CO2 separation and transport in the industry of energy and transportation. Polymeric nanomembranes will be developed via depositing monomers into interstitials of VASWNTs through chemical vapor deposition（ＣＶＤ）,followed by in-situ polymerization. The behaviour of the monomer/oligomer deposition into VASWNT will be investigated to reveal the effects of process parameter. In addition, parameters of nano-processes such as etching of excessive deposits and pore-opening of CNT's will be optimised to obtain nanofilitration membranes free of filling defects, with orderly SWNT assembly, and of high mechanical strength and good heatand chemical resistance. The structure and transport capacity of the fabricated membranes will be characterized. Results from the proposed research are expected to lay a theoretical and meterial base for the manufacture and application of VASWNT-based nanofiltration membrane devices.