BROWSE

Related Scientist

Researcher

나노 구조 물리 연구단
나노구조물리 연구단
more info

Enhanced water vapor separation by temperature-controlled aligned-multiwalled carbon nanotube membranes

Cited 6 time in webofscience Cited 0 time in scopus
292 Viewed 21 Downloaded
Title
Enhanced water vapor separation by temperature-controlled aligned-multiwalled carbon nanotube membranes
Author(s)
Jeon W.; Yun J.; Khan F.A.; Seunghyun Baik
Publication Date
2015-09
Journal
NANOSCALE, v.7, no.34, pp.14316 - 14323
Publisher
ROYAL SOC CHEMISTRY
Abstract
Here we present a new strategy of selectively rejecting water vapor while allowing fast transport of dry gases using temperature-controlled aligned-multiwalled carbon nanotubes (aligned-MWNTs). The mechanism is based on the water vapor condensation at the entry region of nanotubes followed by removing aggregated water droplets at the tip of the superhydrophobic aligned-MWNTs. The first condensation step could be dramatically enhanced by decreasing the nanotube temperature. The permeate-side relative humidity was as low as ∼17% and the helium-water vapor separation factor was as high as 4.62 when a helium-water vapor mixture with a relative humidity of 100% was supplied to the aligned-MWNTs. The flow through the interstitial space of the aligned-MWNTs allowed the permeability of single dry gases an order of magnitude higher than the Knudsen prediction regardless of membrane temperature. The water vapor separation performance of hydrophobic polytetrafluoroethylene membranes could also be significantly enhanced at low temperatures. This work combines the membrane-based separation technology with temperature control to enhance water vapor separation performance. This journal is © The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/2160
ISSN
2040-3364
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
Enhanced water vapor(백승현).pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse