Gas transport in vertically-aligned carbon nanotube/parylene composite membranes

被引：34
|
作者：
Zhang, Lei [1 ]
Zhao, Bin [1 ]
Wang, Xianying [1 ]
Liang, Youxuan [1 ]
Qiu, Hanxun [1 ]
Zheng, Guangping [2 ,3 ]
Yang, Junhe [1 ]
机构：
[1] Shanghai Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China
[2] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
[3] Hong Kong Polytech Univ, Shenzhen Res Inst, Kowloon, Hong Kong, Peoples R China
来源：
CARBON | 2014年 / 66卷
关键词：
NANOTUBE MEMBRANES; MASS-TRANSPORT; FORESTS;
D O I：
10.1016/j.carbon.2013.08.007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Vertically-aligned carbon nanotube (VACNT) composite membranes were fabricated by impregnating carbon nanotube (CNT) forests with poly-para-xylylene (parylene-C) through room-temperature chemical vapor deposition (CVD). Transport properties of diverse gases through the CNT/parylene membranes were investigated. The gas permeances scaled inversely with their molecular weights in accordance with Knudsen model and the value of permeance was about 30 times higher than that predicted by the Knudsen diffusion kinetics, which was attributed to the atomically smooth interiors of CNTs. In addition, the gas permeance values in this work were higher than those reported for other VACNT membranes, due to the smaller membrane thickness and good crystallinity of the CNTs. (C) 2013 Published by Elsevier Ltd.
引用
收藏
页码：11 / 17
页数：7
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