Journal
CARBON
Volume 66, Issue -, Pages 11-17Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.08.007
Keywords
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Funding
- NSFC [51901086, 51072118]
- 973 program [201003234609]
- Shanghai Shuguang Project [09SG46]
- STCSM [10231201103]
- Innovation Fund Project For Graduate Student of Shanghai [JWCXSL1201]
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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.
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